HK1237297A1 - Amusement attraction fluid control system - Google Patents

Description

Amusement project fluid control system

Technical Field

The present invention relates generally to play items, and in particular to fluid-based play items.

Background

Over the past decades, waterborne rides have become increasingly popular. Such an amusement ride can provide an exciting feel similar to a roller coaster and also features a water cooling effect and an excitement that is splashed upon.

The most common waterborne rides are flume-style waterslides in which the participants' bodies or participants slide along a channel or "flume" in or on a vehicle. Water is provided in the sink to provide lubrication between the body/vehicle and the sink surface, and to provide the cooling and splashing effects described above. Typically, the participant's movement in the flume is controlled primarily by the combination of the flume's profile (hills, valleys, turns and falls, etc.) and gravity.

As participants become more and more excited, the need for better control of the participants' movements in the sink has increased. Thus, various techniques are applied to accelerate or decelerate participants by methods other than gravity. For example, a powerful water jet may be utilized to accelerate or decelerate the participant. Other rides use a conveyor to transport participants to the top of hills where the participants would not have reached the peak based solely on their momentum.

Water rides are very popular in hot climates where the cooling effect of the water allows participants to enjoy outdoor activity when the air temperature makes the outdoor experience unpleasant. Challenges arise because these places often have limited water resources, are prone to drought, and may have expensive energy sources. This situation hinders the construction of water rides that require large amounts of water to operate and use large energy reserves to move the water through the water ride.

Disclosure of Invention

One aspect of the invention relates to an amusement ride fluid control system, comprising: a fluid source; at least one pump; at least one fluid feature; a plurality of conduits interconnecting the fluid source and the at least one pump with the at least one fluid feature; and a controller; wherein the at least one pump is configured to pump fluid through the conduit to the at least one fluid feature; and wherein the controller is adapted to control the at least one pump to deliver fluid to each respective fluid feature.

In some embodiments, the amusement attraction fluid control system further comprises at least one variable frequency drive intermediate the controller and the at least one pump to control each of the at least one pump based on input received from the controller.

In some embodiments, the attraction fluid control system further comprises at least one sensor, wherein the at least one sensor provides input to the controller.

In some embodiments, the at least one sensor comprises at least one first sensor adapted to detect at least one characteristic of the participant.

In some embodiments, the characteristic is at least one of position and velocity.

In some embodiments, the at least one sensor comprises at least one second sensor adapted to detect at least one fluid flow characteristic.

In some embodiments, the at least one fluid flow characteristic is at least one of fluid pressure and fluid flow rate.

In some embodiments, the at least one fluidic feature comprises a plurality of fluidic features and the at least one pump comprises a plurality of pumps, and wherein each of the plurality of fluidic features has at least one associated pump of the plurality of pumps.

In some embodiments, each of the at least one pump is adapted to increase the fluid flow of the fluid feature when the parameter is proximate to the associated fluid feature and to decrease the fluid flow of the fluid feature when the parameter is distal to the associated fluid feature.

In some embodiments, the amusement attraction fluid control system further comprises a variable frequency drive associated with each of the at least one pump to control fluid flow of the at least one pump.

Another aspect of the invention relates to a waterslide section comprising the amusement ride water control system and a sliding surface, wherein each fluid feature is a water feature and each at least one pump is adapted to increase the water flow of the respective water feature as a participant slides toward each respective water feature and decrease the water flow of the respective water feature as the participant slides away from the respective water feature.

In some embodiments, the fluid feature is a water spray source.

Another aspect of the invention relates to an attraction that includes the attraction fluid control system and a waterslide, wherein the plurality of fluid features are associated with the waterslide.

Another aspect of the invention relates to an attraction that includes the attraction fluid control system and a water play structure, wherein the plurality of fluid features are associated with the water play structure.

Another aspect of the invention relates to a water control system for a water play item, comprising: a water source; a pump; a plurality of water features; and a plurality of conduits interconnecting the water source and pump with the plurality of water features; each of the plurality of water features has a respective associated valve; wherein the pump is configured to pump water through the conduit to the water feature; wherein each respective associated valve is adapted to open to deliver water to each respective water feature.

In some embodiments, the amusement ride water control system further comprises at least one sensor, wherein at least one of the associated valves is movable between an open position and a closed position based on input from the at least one sensor.

In some embodiments, the at least one sensor comprises a plurality of sensors, wherein each respective associated valve has a respective associated sensor.

Another aspect of the present invention relates to an amusement ride vehicle motion control system comprising: a channel; a plurality of fluid ejection sources disposed to eject fluid across the channel; at least one first sensor adapted to detect when an amusement ride vehicle enters a zone of the channel; at least one pump associated with the plurality of fluid ejection sources; and a controller adapted to increase fluid flow of the respective fluid ejection source by the at least one pump in response to the amusement ride vehicle entering the zone.

In some embodiments, the amusement ride vehicle motion control system further comprises at least one second sensor adapted to detect when an amusement ride vehicle exits a zone of the channel, the controller adapted to decrease the pump output to decrease the flow of the fluid spray source in response to the amusement ride vehicle exiting the zone.

In some embodiments, the amusement ride vehicle motion control system further comprises: a second plurality of fluid ejection sources disposed to eject fluid across the channel; at least one third sensor adapted to detect when an amusement ride vehicle enters a second region of the channel, at least one second pump associated with a second plurality of fluid injection sources; and the controller adapted to increase fluid flow of the respective second plurality of fluid injection sources by the at least one second pump in response to the amusement ride vehicle entering the zone.

In some embodiments, the respective pump is connected to the controller by a variable frequency drive, wherein the respective variable frequency drive is adapted to control the speed of the respective pump.

In some embodiments, the channel includes a sliding surface and the vehicle is adapted to slide on the sliding surface.

In some embodiments, the channel is adapted to hold sufficient fluid to float the vehicle and the vehicle is adapted to float in the channel.

In some embodiments, the channel is inclined upwardly and the fluid ejection source is positioned to exert a force on the vehicle to push the vehicle upwardly along the channel.

In some embodiments, the channel is horizontal and the fluid ejection source is positioned to exert a force on the vehicle to accelerate the vehicle along the channel.

Another aspect of the invention relates to a method of affecting sliding movement of a vehicle on a waterslide, comprising: arranging a channel in the water slide way; positioning a plurality of water spray sources to spray water on vehicles in the tunnel; sensing when a vehicle enters the passageway; the speed of the pump is increased to spray water from the spray source at a pressure and flow rate that affects the movement of the vehicle.

In some embodiments, the method further comprises sensing when a vehicle exits the passageway; and reducing the speed of the pump to reduce water spray from the water spray source.

In some embodiments, the method further comprises operating the variable frequency drive to control the speed of the pump.

In some embodiments, the channel is inclined upwardly, the method comprising operating the fluid jet source to exert a force on the vehicle to push the vehicle upwardly along the channel.

In some embodiments, the passageway is horizontal, and the method includes operating the fluid jet source to exert a force on the vehicle to accelerate the vehicle along the passageway.

Another aspect of the invention relates to an amusement ride vehicle comprising: the vehicle includes a vehicle body and at least one of a recess and a protrusion on an outer peripheral surface of the vehicle body, the at least one of a recess and a protrusion defining a fluid impact surface angled with respect to an intended direction of motion of the vehicle to affect motion of the vehicle when the fluid impact surface is impacted by a fluid.

In some embodiments, at least a portion of the bottom surface of the vehicle body is adapted to slide on a sliding surface.

In some embodiments, the vehicle is adapted to float in a fluid.

In some embodiments, the at least one of recesses and protrusions comprises a plurality of recesses or a plurality of protrusions spaced along opposite sides of the body.

In some embodiments, the vehicle includes an outer sidewall and a bottom surface, and the plurality of recesses or the plurality of protrusions do not extend outwardly beyond under the outer sidewall or the bottom surface of the vehicle body or over the top surface of the vehicle.

In some embodiments, the vehicle includes a side portion and a bottom portion, and the plurality of recesses or the plurality of protrusions are located below the side portion and adjacent to the bottom portion of the vehicle body.

In some embodiments, the vehicle body has a front end and a rear end, wherein at least one of the recess and the projection has an inboard end and an outboard end, and wherein the inboard end of the at least one of the recess and the projection is closer to the front end than to the rear end such that the at least one of the recess and the projection is tilted forward.

In some embodiments, the fluid impact surface faces the rear end of the vehicle body and is concave.

In some embodiments, at least one of the recess and the protrusion is removable and repositionable.

In some embodiments, the amusement ride vehicle further comprises at least one channel, wherein the at least one of recesses and protrusions are connected to the at least one channel to direct water away from the fluid impact surface after impact.

In some embodiments, the at least one channel comprises a plurality of channels and each of the at least one of a recess and a protrusion is connected with a respective channel of the plurality of channels.

In some embodiments, at least some of the plurality of channels are interconnected.

Other aspects and features of the present invention will become apparent to those ordinarily skilled in the art upon review of the following detailed description of specific embodiments of the invention in conjunction with the accompanying figures.

Drawings

Embodiments of the invention are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic top view of an amusement ride vehicle control system according to an embodiment of the present invention;

FIG. 2 is a schematic view of a control system for the amusement ride vehicle control system of FIG. 1;

FIG. 3 is a schematic side view of a portion of an amusement ride incorporating the amusement ride vehicle control system of FIG. 1;

4A, 4B and 4C are schematic top views of the amusement ride vehicle control system of FIG. 1 showing three different positions of the vehicle;

FIG. 5A is a schematic view of an attraction feature according to another embodiment of the invention;

FIG. 5B is a schematic diagram of a control system of the embodiment of FIG. 5A;

FIG. 6 is a schematic view of a fluid system according to another embodiment of the present invention;

figure 7A is a schematic view of a water play structure according to another embodiment of the present invention;

FIG. 7B is a schematic view of a waterslide configuration according to another embodiment of the invention;

FIG. 8A is a schematic view of an attraction feature according to another embodiment of the invention;

FIG. 8B is a schematic view of an attraction feature according to another embodiment of the invention;

FIG. 8C is a schematic diagram of a control system of the embodiment of FIG. 8B;

FIG. 8D is a schematic illustration of an attraction feature according to another embodiment of the design;

FIG. 9 is a perspective view of a portion of an amusement ride channel according to the embodiment of FIG. 1;

FIGS. 10A-10E are top, side, bottom, front and rear views, respectively, of a vehicle according to another embodiment of the present invention;

FIGS. 11A-14C are perspective, top, side and operational views of three protrusion designs for use with the embodiment of FIGS. 10A-10E; and

figure 15 is a schematic view of a waterslide according to another embodiment of the invention.

Detailed Description

Fig. 1 shows a first embodiment of an amusement ride motion control system 10. The system 10 includes a tunnel 12 and a vehicle 13. Fig. 1 depicts only a portion of the channel 12. The channel 12 may comprise a water-channel slide with a central sliding surface 14 between side walls 16. The sliding surface may be lubricated with water as in a conventional surfcraft, or may have a low friction coating. Alternatively, the passage 12 may be a water filled passage with sufficient fluid therein that the vehicle 13 may float therein or the vehicle may include wheels and may roll or otherwise move therein. The wall 16 may be in close proximity to the path of the vehicle 13 on the sliding surface 14 to assist in guiding the vehicle along a predetermined path, or further isolated from the indeterminate path of the vehicle 13.

In this embodiment, channel 12 shows two regions, referred to as region 1 and region 2. The direction of travel of vehicle 13 along pathway 12 is from zone 1 to zone 2 as indicated by arrow 18. At the entrance of zone 1, more than one sensor a may be positioned. Sensor a may be any type of sensor that can detect the entry of vehicle 13 into zone 1. Also, at the entrance from zone 1 to zone 2, more than one sensor B may be positioned. Sensor B may also be any type of sensor capable of detecting the entry of vehicle 13 into zone 2. The sensor may also be omitted or may be present only at region 1 or region 2, rather than both.

Fluid jets or spray sources 20A and 20B, such as water jets, are spaced along the wall 16. The first injection source 20A is located in the region 1, and the second injection source 20B is located in the region 2. In the present embodiment, the four spray sources 20A and 20B depicted in each of zones 1 and 2 are aligned in pairs laterally with each other along wall 16. In other embodiments, more or fewer injection sources 20A and 20B may be provided. In this embodiment, the fluid ejected from the ejection source is water. In other embodiments, different fluids may be injected, such as air, gas, other liquids, solid/liquid suspensions or combinations thereof, or other gases. In some embodiments, the injection source injects horizontally; in other embodiments, the injection source may inject at an upward or downward angle. In some embodiments, the injection sources 20A and 20B may be narrowly focused to provide an injection of fluid; in other embodiments, the spray may be less concentrated.

In this embodiment, the spray sources 20A and 20B are angled to direct water in a direction that is at an angle θ to the direction of travel of the vehicle 13. In the present embodiment, the angle θ of the injection sources 20A and 20B indicates the angle at which water is injected into the passage 12 from the injection sources 20A and 20B. The angle theta in this embodiment is about 10 deg. to about 15 deg. from the wall 16. In other embodiments, the spray sources 20A and 20B may be oriented at other angles to the direction of travel.

Alternatively, the spray source may be perpendicular to the direction of travel to rotate the vehicle, for example, or tilted in the opposite direction to slow the speed of the vehicle 13, for example.

Spray sources 20A and 20B may include spray nozzles and a source of fluid that is forced or drawn through the spray nozzles. In this embodiment, the injection pressure may be about 30-60 PSI and the injection volume or fluid flow may be about 25-55 GPM. However, whether narrowly focused or open, the exact pressure, volume and spray or fire pattern is determined based on the requirements of the particular system. In addition, the injection sources 20A and 20B may be different from each other and their pressure, volume, injection pattern and direction may be controllable.

The vehicle 13 of this embodiment is a raft vehicle having a front end 22, a rear end 24, sides 26 and a bottom 28. As can be seen from the schematic top view of fig. 1, the vehicle 13 has a substantially oblong body. The gas tube 30 extends around the body periphery of the vehicle 13 and defines the front end 22, the rear end 24, and the sides 26. The bottom portion 28 is connected to a bottom surface (not shown) of an air fill tube 30 to define an interior of the vehicle 13 for carrying passengers. In this embodiment, the vehicle 13 also includes a central zone 32. The vehicle 13 may accommodate two passengers, one in front of the bay 32 and one behind the bay 32. It should be understood that the vehicle 13 is merely exemplary and that other embodiments of the present invention include many vehicle categories as further discussed in fig. 10A-10E.

In this embodiment, the sides 26 are defined by inflation tubes 30, as described above. The fill tube 30 may have a circular cross-section such that the outer sidewall of the vehicle 13 is curved. A series of recesses or suction ports 34 are defined in the side 26. In the present embodiment, 5 pairs of mirror-image recesses are spaced substantially equally along the side surface 26 of the vehicle 13. In other embodiments, there may be more or fewer pairs of recesses, such as 7 or 10 pairs, depending on the system requirements, with the recesses 34 being at an angle to the direction of travel of the vehicle 13. The angle of the recesses 34 is substantially the same as the angle of the spray sources 20A and 20B such that when the spray from the spray sources 20A and 20B is aligned with one of the recesses 34, fluid is directly sprayed into each recess 34 and impacts the interior or impact surface 36.

Each recess 34 is concave and has an inboard end 35 and an outboard end 37. As can be seen from fig. 1, the inboard end 35 of the recess 34 is further from the aft end 24 than the forward end 22 such that the recess 34 is tilted forward. By utilizing this configuration, the fluid impact surface 36 faces the rear end 24 of the vehicle body and is concave.

In some embodiments, the shape of recess 34 and the angle θ of injection sources 20A and 20B are based on an impulse turbine locomotive design.

It should be appreciated that the force of the fluid against the impact surface may affect the motion of the vehicle. The force imparted by the fluid impacting the impact surface within the side 26 of the vehicle 13 may more effectively propel the vehicle 13 in the intended direction of travel than the force imparted by water impacting the side of a comparable vehicle without such a recess, resulting in a more efficient energy transfer of water to vehicle motion. This can cause significant reductions in power and water consumption as well as noise. The system may also be able to propel heavier vehicles based on increased efficiency and lift the vehicle up a slope or accelerate the vehicle in a horizontal plane.

Fig. 2 is a schematic diagram of an exemplary control system 37 of the attraction motion control system 10 of fig. 1. In this control system, sensors a and B provide inputs to a Programmable Logic Controller (PLC) 38. The PLC 38 is connected to one or more valves 40 for controlling the flow of water to the spray sources 20A and 20B. PLC 38 may receive signals and inputs from sensors and other sources generated through a user interface, such as operators and users. The PLC 38 may also be connected to a Variable Frequency Drive (VFD)42 that receives input from the PLC 38 and is controlled by the PLC 38. The VFD 42 is correspondingly connected to a pump 44 for controlling the flow of water to the valve 40 and ultimately to the spray sources 20A and 20B.

It should be understood that the control system 37 may be altered to delete some of the components. For example, the VFD 42 may be eliminated and an optional means of driving the pump may be provided. The valve may be eliminated and the VFD 42 may be used alone to control the flow of water from the pump 44. In both embodiments (i.e., with or without valves), there may be one pump and associated VFD for each zone and for each group or row of spray sources.

The Programmable Logic Controller (PLC)38 may be eliminated and an optional control device may be used. In addition, control system 37 and sensors a and B may be eliminated entirely, and injection sources 20A and 20B may be connected directly to pump 44 or to other sources or fluid connections that flow at a constant rate to provide constant delivery of fluid to injection sources 20A and 20B and, thus, constant injection from injection sources 20A and 20B or other such fluid features.

Fig. 3 shows a schematic side view of a zone or portion 50 of an amusement ride incorporating a control system according to the embodiment of fig. 1 and 2. In this embodiment, the portion 50 includes an initial descending portion 52, a transitional concave or valley portion 54 and a subsequent ascending portion 56 and a final small descending portion 58. The depicted portions and curvatures are exemplary only. Many other configurations of upward, downward, horizontal, and variously angled transitions are possible.

The vehicle 13 is shown in fig. 3 on the upward portion 56 of the aisle 12. It should be understood that the channel 12 may also form a horizontal portion or an upwardly inclined portion. The channel 12 is depicted without sidewalls 16. The positioning of sensors A and B and spray sources 20A and 20B are also shown schematically. It should be appreciated that a vehicle that initially travels downward on the descending portion 52 may not have sufficient momentum to travel upward on the upward portion 56 without applying an external force. The operation of the control system 37 to provide an external force is described with reference to FIGS. 1-4C.

Fig. 4A-4C illustrate three different positions of travel of the vehicle 13 along the pathway 12. In the first position shown in fig. 4A (e.g., corresponding to valley portion 54 of fig. 3), the vehicle 13 has not yet reached sensor a. The control system 37 does not detect the vehicle 13 and the injection sources 20A and 20B do not inject fluid or inject at low pressure and low volume.

In fig. 4B, the front end 22 of the vehicle 13 has just passed the sensor a. When this occurs, sensor a detects the presence of the vehicle 13. The information is passed to the PLC 38. PLC 38 responsively activates VFD 42 to initiate pump 44 to spray a fluid, such as water or air, from source 20A. In some embodiments, the VFD 42 and pump 44 may already be running and the PLC 38 will only activate the valves. At the same time, PLC 38 opens valve 40 associated with spray source 20A to cause fluid drawn by pump 44 to be sprayed out through spray source 20A. The fluid (which may be a water jet) ejected by the ejection source 20A impinges into the recess 34 as described with reference to fig. 1. As shown in fig. 3, the force imparted by the fluid from the injection source 20A provides momentum that pushes the vehicle 13 upward onto the upward portion 56. In the position of fig. 4B, the vehicle 13 has not yet reached the sensor B, and thus the spray source 20B is not spraying fluid.

In fig. 4C, the front end 22 of the vehicle 13 has passed sensor B. When this occurs, the sensor B detects the presence of the vehicle 13. The information is passed to the PLC 38. Since the PLC 38 has already activated the VFD 42 to power the pump 44 to inject fluid from the source 20A, in some embodiments, the PLC 38 may not necessarily be in communication with the VFD 42. In other embodiments, PLC 38 must communicate with VFD 42 to increase the fluid pressure for pumping from additional injection sources 20B. In either case, PLC 38 opens valve 40 associated with spray source 20B to allow fluid drawn by pump 44 to be sprayed out through spray source 20B. Fluid ejected by the ejection source 20B also impinges into the recess 34 as described with reference to fig. 1. As shown in fig. 3, the force imparted by the fluid from the injection source 20B also provides momentum that pushes the vehicle 13 upward onto the upward portion 56.

In some embodiments, the injection sources 20A and 20B will provide sufficient momentum to propel the vehicle 13 up the upward portion 56 and onto the downward portion 58. In other embodiments, the upward portion 56 may contain additional sensors and associated injection sources to provide increased momentum. In some embodiments, PLC 38 will control the injection source to inject for a defined length of time. In some embodiments, the control system 37 may also incorporate additional sensors that shut off the water spray when the vehicle 13 is detected by the additional sensors.

In some embodiments, rather than having a sensor along the uphill section 56, a sensor may be provided at the entrance to section 50. The sensors may activate the injection sources simultaneously or sequentially when a vehicle entering the portion 50 is detected. In this embodiment, the injection source may be activated for a specific period of time, or there may be an additional sensor at the end of portion 50 to turn off the injection source when a vehicle is detected.

In some embodiments, the sensor may be omitted and the spray source may be activated for a defined period of time after the vehicle has begun to ride. It should be understood that many other control configurations are possible.

In some embodiments, the injection sources 20A and 20B may be solid stream nozzles or injection nozzles. The nozzle may have a diameter of 1/4 inches to 2 inches. The nozzle may be angled at 0-15 degrees. The flow rate through the nozzle may be 5-50 gallons per minute.

Fig. 5A is a schematic view of a portion of an amusement ride 200. Portion 200 includes a slide path 202, a fluid system 204, and a control system 206.

As described with reference to fig. 1, the sliding path may be defined by a channel, such as a sink-type slide, having a central sliding surface between the side walls. The sliding surface may be lubricated with water as in a conventional surfcraft, or may have a low friction coating. Alternatively, the passageway may be a water filled passageway having sufficient fluid therein that the vehicle may float or the vehicle may include wheels and may roll or otherwise move therein. The wall may be in close proximity to the sliding surface to assist in guiding the vehicle along a predetermined path, or further isolated from an indeterminate path of the vehicle.

In fig. 5A, the profile of the slide path 202 is shown. For example, vehicle 208 begins at a high entry point 210. The sliding path 202 is a wave-like path, wherein the path reaches from the entry point 210 down to a first valley 212, up to a first local peak 214, down to a second valley 216, up to a second local peak 218, down to a third valley 220 and up to a third local peak 222. It will be appreciated that the facility profile used is exemplary and that many other facility profiles may be used, including purely planar, uphill or downhill profiles.

In this embodiment, one or more of the first, second, and third valleys 212, 216, 220 may include first, second, and third drains 224, 226, 228, respectively, or other means for removing water that may accumulate in these relatively low regions of the sliding path 202. There are rows of injection sources 230, 232, and 234 along the sliding path between first, second, and third troughs 212, 216, and 220 and respective first, second, and third local peaks 214, 218, and 222.

Each row of injection sources 230, 232, and 234 may be configured in the same manner as injection sources 20A, 20B described with reference to fig. 1. In particular, each row of spray sources 230, 232, and 234 may be comprised of individual spray sources spaced along the wall of slide path 202 and may include laterally aligned pairs along opposing walls. In this embodiment, the spray source may be angled to direct water in a direction at an angle to the direction of travel of the vehicle to apply a force to the vehicle to propel the vehicle along the slide path 202.

In the present embodiment, the first, second, and third rows of injection sources 230, 232, and 234 extend from about a midpoint along the slope between the first, second, and third troughs 212, 216, and 220 and their respective first, second, and third local peaks 214, 218, and 222 to about the respective first, second, and third local peaks 214, 218, and 222. However, to ensure that a vehicle traveling along slide path 202 has sufficient momentum to travel upward and past each of first, second, and third local peaks 214, 218, and 222, for example, the number of injectors in first, second, and third rows of injection sources 230, 232, and 234 and their respective locations and the locations of first, second, and third rows of injection sources 230, 232, and 234 will vary and will depend on the desired thrust and the desired duration.

It should be understood that one or all of the first, second, and third spray sources 230, 232, 234 may be replaced with other facility features such as atomizers or high pressure water guns, particularly for other facility profiles that may have different water requirements.

First drain 224, second drain 226, and third drain 228, and rows of spray sources 230, 232, and 234 provide an interface between slide path 202 and fluid system 204.

The fluid system 204 directs water used by the amusement ride 200. The fluid system 204 includes a pump 240 and a series of conduits. The conduits include an output conduit from the pump 240 and a return conduit that returns water to the pump 240. Associated with the pump 240 may be a reservoir, or other source of water to accumulate the returned water until it needs to be pumped again to the slide path 202 and, for example, to replenish the fluid system 204 when water is lost due to evaporation and splashing from the attraction 200.

In this embodiment, the fluid system 204 includes a main output conduit 244 and first, second, and third branch output conduits 246, 248, 250. The main output conduit 244 is in fluid communication with each of the branch output conduits 246, 248 and 250. Together, main outlet conduit 244 and first branch outlet conduit 246 connect pump 240 with first bank of injection sources 230. Similarly, main output conduit 244 and second branch output conduit 248 together connect pump 240 with second bank of injection sources 232, and main output conduit 244 and third branch output conduit 250 together connect pump 240 with third bank of injection sources 234. It should be appreciated that there are numerous means by which pressurized fluid may be provided to first row injection sources 230, second row injection sources 232, and third row injection sources 234. For example, the main output conduit 244 may be eliminated and each of the first, second, and third branch output conduits 246, 248, 250 may be connected directly to a separate pump, rather than to a single pump 240.

First, second, and third branch output conduits 246, 248, and 250 may also include first, second, and third flow valves 254, 256, and 258, respectively, and first, second, and third check valves 260, 262, and 264, respectively. In this embodiment, first, second, and third check valves 260, 262, and 264 are between the main output conduit 244 and the first, second, and third flow valves 254, 256, and 258. In other embodiments, one or more check valves may instead be disposed on the main output conduit 244. In some embodiments, first, second, and third check valves 260, 262, and 264 may instead be disposed between first, second, and third flow valves 254, 256, and 258, respectively, and each bank of injection sources 230, 232, and 234. The opening and closing of the first, second, and third flow valves 254, 256, and 258, and the first, second, and third check valves 260, 262, and 264 may be controlled by the control system 206 as described in further detail below.

The first 224, second 226 and third 228 drain pipes may be connected to a return pipe 265 that returns the drained water to the pump 240 or an associated reservoir or fluid source or reservoir 241.

Sensors may be provided along the slide path 202 to record and transmit information about the vehicle 208 passing through the slide path 202. In the present embodiment, an entrance sensor 270 is provided at the entrance point 210 of the slide path 202. The first sensor 272, the second sensor 274, and the third sensor 276 are disposed on the first local peak 214, the second local peak 218, and the third local peak 222, respectively. The portion of the facility between the inlet sensor 270 and the first sensor 272 is a first zone 271, the portion of the facility between the first sensor 272 and the second sensor 274 is a second zone 273, and the portion of the facility between the second sensor 274 and the third sensor 276 is a third zone 275. The entry sensor 270, the first sensor 272, the second sensor 274, and the third sensor 276 may measure various parameters or characteristics of the participant or the vehicle 208. For example, in some embodiments, the inlet sensor 270, the first sensor 272, the second sensor 274, and the third sensor 276 may only measure the position or passage of the vehicle 208. In other embodiments, one or more of the inlet sensor 270, the first sensor 272, the second sensor 274, and the third sensor 276 may measure different and/or additional parameters, such as speed.

The inlet sensor 270, the first sensor 272, the second sensor 274, and the third sensor 276 form part of the control system 206. The control system 206 includes a controller, such as a Programmable Logic Controller (PLC) 280. In fig. 5A, PLC280 is shown connected to pump 240 via an optional Variable Frequency Drive (VFD) 281. For clarity, the electrical connections of the various elements of the control system are shown in FIG. 5B.

As can be seen from fig. 5B, the inlet sensor 270, the first sensor 272, the second sensor 274, and the third sensor 276 are connected to a PLC 280. First, second, and third flow valves 254, 256, 258 are also connected to PLC280 and can provide input to and receive output from PLC280 as part of control system 206. The control system 206 may also include a user interface 284 and a memory device 282 connected to the PLC 280. The PLC280 may be directly connected to the pump 240 or may be connected to the pump 240 via a Variable Frequency Drive (VFD) 281. The VFD 281 may be used to regulate the operation of the pump, particularly during the opening and closing of the valves, to bring the pump output to a desired level. The connections of the PLC280 to other elements of the control system are only schematically shown. It should be understood that there are many possible connection configurations, including wireless connections. In some embodiments, the VFD may be replaced by a direct start (DOL) device, such as a mechanical compactor. Such a contractor may act as a relay to provide power to the pump 240 based on the control of the PLC 280.

During quiet times when the facility may be operating for many minutes without passengers, the speed of the pump 240 may be adjusted to conserve energy. The pump 240 can be turned down to a certain lower flow level that does not significantly affect the water balance of the entire mechanical system, but which achieves significant energy and noise reduction. When the system needs to return to normal operation again, it is likely to be actuated by an operator button or by the user interface 284. For example, the system may somehow indicate to the operator whether it is safe to use a visual indicator such as a red/green traffic light system or a water gate that restricts access to the sliding feature.

In one exemplary mode of operation, first, second, and third flow valves 254, 256, and 258 are initially closed and no water will flow through first, second, and third bank of injection sources 230, 232, and 234. The first, second, and third check valves 260, 262, and 264 are oriented in a manner that allows water to flow from the pump 240 in an output flow direction to the first, second, and third flow valves 254, 256, and 258 without flowing in a reverse direction.

The vehicle 208 slides past the inlet sensor 270 on the water lubricated slide path 202. The entry sensor 270 registers the presence of the vehicle 208 and communicates this to the PLC 280. The PLC280 activates the pump 240 via the VFD 281. The PLC also opens the first flow valve 254 to allow pumped water to pass through the main output conduit 244 and the first branch conduit 246. Water will be pumped through the first flow valve 254 and out through the first jet drain 230. At the same time, the vehicle 208 continues to slide down into the first valley 212 and then up toward the first local peak 214. As the vehicle 208 travels upward, the speed of the vehicle 208 slows. As the vehicle 208 moves past the first row of spray sources 230, the row of spray sources 230 sprays water onto the vehicle 208 and provides a force that assists in pushing the vehicle 208 up to the first localized peak 214, as described above with reference to FIGS. 1-4.

As the vehicle 208 passes the first local peak 214, the vehicle 208 passes the first sensor 272. The first sensor 272 registers the presence of the vehicle 208 and communicates this to the PLC 280. For example, the PLC280 may increase the pump displacement of the pump 240 by ramping up the frequency of the power supplied to the pump by the VFD 281 to increase the water flow and pressure. The PLC280 also opens the second flow valve 256 to allow the pumped water to pass through the main output conduit 244 and the second bypass conduit 248. Water will be pumped through second flow valve 256 and out through second row of injection sources 232. At the same time, the vehicle 208 continues to slide down into the second trough 216 and then up toward the second local peak 218. As the vehicle 208 travels upward, the speed of the vehicle 208 slows. As the vehicle 208 passes the second row of spray sources 232, the spray sources 232 spray water onto the vehicle 208 and provide a force that assists in pushing the vehicle 208 up to the second local peak 218.

At the same time, since the vehicle 208 has already passed the first bank of injection sources 230, flow from these sources may be interrupted to reduce water demand and energy consumption. To do so, PLC280 closes first flow valve 254. The timing of the closing of the first flow valve 254 may be at an immediate time after the vehicle 208 passes the first local peak 214 or may be delayed. For example, depending on the water pressure in the first branch conduit 246 and the rating of the first flow valve 254, the immediate closing of the first flow valve 254 under pressure may be detrimental to the first flow valve 254. For example, the PLC280 may wait for a pressure drop in the first branch conduit 246 to be caused by the PLC280 adjusting the output of the pump 240 via opening the second flow valve 256 or by the VFD. In some embodiments, the first flow valve 254 may operate independently to automatically close when the pressure in the first bypass conduit 246 reaches a predetermined level. In other embodiments, first flow valve 254 or a sensor in first branch conduit 246 can provide feedback to PLC280 and the PLC will control the closing of first flow valve 254.

The piping may also include one or more pressure relief or drain valves 253. While one pressure relief valve 253 is depicted in the main output conduit 244, it should be understood that such a pressure relief valve may be installed throughout the system as needed to relieve excess pressure during valve transitions and mitigate any damage to the flow valves 254, 256, and 258 during switching of the valves back and forth between open and closed positions.

In other embodiments, the closing of the first flow valve 254 may be controlled by a timer set based on flow calculations or measurements based on the size and length of the piping, pump pressure and volume, the opening of the second flow valve, and other known system variables used in designing a particular system. For example, in the case of a ride participant being introduced at predetermined intervals to play the ride by using a belt conveyor or button load that controls the dispatch rate of the participant, the time of introduction of the participant may be known and may be used to control the operation of the valve. The valve may also be controlled by an operator.

In some embodiments, the first flow valve 254 may not be fully closed, but may be partially open to maintain a reduced flow of water to the first row of injection sources 230. Even when the first flow valve 254 is fully closed, the first check valve 260 prevents water from draining back through the first check valve 260. The first check valve 260 may also be disposed on the other side of the first flow valve 254, or may be omitted. Check valves may also be located elsewhere in the fluid system 204 to help control the flow and retention of water in the fluid system 204.

As the vehicle 208 passes the second local peak 218, the vehicle 208 passes the second sensor 274. The second sensor 274 registers the presence of the vehicle 208 and communicates this to the PLC 280. The PLC280 may increase or otherwise adjust parameters of the pump 240 (such as pump displacement, etc.) via the VFD 281 (if present). The PLC also opens the third flow valve 258 to allow pumped water to pass through the main output conduit 244 and the third bypass conduit 250. Water will be pumped through third flow valve 258 and out through third row injection source 234. Meanwhile, the vehicle 208 continues to slide down into the third trough 228 and then up toward the third local peak 222. As the vehicle 208 travels upward, the speed of the vehicle 208 slows. When vehicle 208 reaches third row of spray sources 234, spray sources 234 spray water onto vehicle 208 and provide a force that helps push vehicle 208 up to third local peak 222.

In a similar manner to the first flow valve 254, the second flow valve 256 is partially or fully closed to retain water in the fluid system 204 by a second check valve 262 that operates in a similar manner to the first check valve 260.

As the vehicle 208 passes the third local peak 222, the vehicle 208 passes the third sensor 276. The third sensor 276 registers the presence of the vehicle 208 and communicates this to the PLC 280. In a manner similar to the first and second flow valves 254, 256, the third flow valve 258 is partially or fully closed to retain water in the fluid system 204 by a third check valve 264 that operates in a manner similar to the first and second check valves 260, 262.

Throughout operation of the fluid system 204 and the control system 206, water accumulated in the first, second, and third valleys 212, 216, 220 may drain through the first, second, and third drains 224, 226, 228 and return to the pump 240 through the return line 265.

It should be appreciated that the use of check valves 260, 262, and 264 may reduce the time it takes to achieve a desired pressure and flow rate in each of the rows of injection sources 230, 232, and 234 once valves 254, 256, and 258 are opened. The valves 254, 256, and 258 may be of the type that automatically open when sufficient pressure is achieved in the bypass flow conduits 246, 248, and 250 and may automatically close when the pressure drops below a certain level. Additional check valves may be installed closer to the injection source. Each individual spray source, which may be an individual nozzle, may have a dedicated check valve to retain water in the conduit closer to the spray source. The valves 254, 256, and 258 may respond to different pressure levels from one another depending on system requirements.

Although drains 224, 226, and 228 are shown, the number and location of the drains may be changed or omitted depending on the system requirements. The drain may also be disconnected from the return line 265 and may drain to the environment, to the reservoir 241, or to other areas of the system to replenish the water.

The illustrated sensors 270, 272, 274, and 276 measure the presence of the vehicle 208. The sensors may be placed in more or different locations and may also measure different or other information such as speed. For example, if one or more sensors are placed on an uphill portion before a row of spray sources 230, the PLC280 may use the measurement of speed to calculate the activation time of the row of spray sources 230 and the volume and pressure of water required to propel the vehicle 208 through the first local peak 272. PLC280 may then operate VFD 281 and pump 240 according to the calculated demand.

It should be appreciated that the fluid system 204 provides a means to reduce water demand by supplying water to the area of the facility portion 200 only when water is needed (e.g., when a vehicle is present). For example, the fluid system 204 may operate without a PLC280 drive control system, which moves the vehicle through the facility portion 200 in the case where the opening and closing of the valves is controlled by a timer based on time measurements. Alternatively, the valve may be controlled directly by a proximity detector that is activated when the vehicle is adjacent a location.

In some embodiments, the pressure requirements for each zone 271, 273, and 275 are that each zone have a flow rate of 500-3000 Gallons Per Minute (GPM) at a pressure of 20-60PSI (an exemplary 3 zones is 1500-9000 GPM).

In some embodiments, for example, PLC280 can record and store data that can be analyzed and used to improve ride efficiency.

It should be understood that the fluid system 204 and control system 206 may be used with disparate marine facility features and may be used in any situation when it is desired to turn on water only when necessary (e.g., when a ride participant is present) or to provide cooling and maintain the temperature of the facility feature surface.

The tubing configuration of FIG. 5A shows a parallel system of tubes 246, 248 and 250. This configuration may be replaced with a fluid system 204B in which conduits 244B, 246B, 248B, and 250B are in series as shown in fig. 6. The system includes flow valves 254B, 256B, and 258B and check valves 260B, 262B, and 264B. The fluid system 204B of fig. 6 may replace the fluid system 204 of fig. 5A. It is noted that the return conduit is omitted in fig. 6, but may form part of the fluid system. In this series configuration, fluid will flow into the conduit 248 only when the flow valve 254B is open, and fluid will flow into the conduit 250B only when both flow valves 254B and 256B are open. This is in contrast to the system of FIG. 5A when the closing of the flow valve 254 does not block flow to the conduits 248 or 250.

The fluid system, with or without a PLC control system, may be used in applications other than marine installations. Figure 7A shows a water play structure 300A. The water play structure 300A can include a plurality of fluid (e.g., water) features 330A, 332A, and 334A, such as sprinklers and sprinklers. Associated with each water feature 330A, 332A, and 334A is a respective proximity detector or other sensor 370A, 372A, and 374A. To reduce water consumption of the water play structure 300A, the water play structure 300A can include a fluid system 304A including a pump 340A, an output flow conduit 344A, bypass flow conduits 346A, 348A, and 350A, and flow valves 354A, 356A, and 358A in the bypass flow conduits 346A, 348A, and 350A.

In operation, pump 340A maintains pressure in conduits 344A, 346A, 348A, and 350A. Valves 354A, 356A, and 358A are movable between open and closed positions and may also be maintained in intermediate positions. When a participant is detected to be adjacent the respective water feature 330A, 332A, and 334A, the valves 354A, 356A, and 358A are opened. When no participant is detected to be adjacent the respective water feature 330A, 332A, and 334A, the valves 354A, 356A, and 358A are closed. For example, the opening and closing of valves 354A, 356A, and 358A may also be controlled by a control system employing a PLC. The various embodiments and variations described in connection with fig. 5A, 5B and 6 are equally applicable to this embodiment.

Fig. 7B shows a gravity-based waterslide structure 300B. The waterslide structure 300B includes a sliding surface 329B having an inlet end 331B and an outlet end 333B. The waterslide structure 300B can also include a plurality of water injection sections 330B, 332B, and 334B at various points along the sliding path from the entry end 331B to the exit end 333B. Associated with each water injection section 330B, 332B, and 334B is a respective proximity detector or other sensor 370B, 372B, and 374B. To reduce water consumption of the waterslide structure 300B, the waterslide structure 300B can include a fluid system 304B including a pump 340B, an output flow conduit 344B, bypass flow conduits 346B, 348B, and 350B, and flow valves 354B, 356B, and 358B in the bypass flow conduits 346B, 348B, and 350B.

In operation, pump 340B maintains pressure in conduits 344B, 346B, 348B, and 350B. When the participant is detected to be approaching the respective water injection sections 330B, 332B, and 334B, the valves 354B, 356B, and 358B are opened. After a specified amount of time has elapsed, valves 354B, 356B, and 358B are closed. The time may be set based on the rate at which the participant is expected to slide along the waterslide. For example, the opening and closing of valves 354B, 356B, and 358B may also be controlled by a control system employing a PLC. The various embodiments and variations described in connection with fig. 5A, 5B and 6 apply equally to this embodiment.

Various types of pumps may be used, such as vertical turbine pumps, centrifugal pumps, and submersible pumps, depending on system requirements. The valves may be solenoid-operated or pneumatic or controlled by any automated means. The feedback signal from the valve can inform a control system such as a PLC of the position of the valve, either discretely (open or closed) or as an analog (how open or closed) in the case where it is desired to maintain the valve in an intermediate position.

In some embodiments, one pump and controller may be used for one or more facilities. In other embodiments, one controller may control multiple pumps distributed around the facility to reduce the length of piping between the pumps and the water output location.

In some embodiments, as shown in fig. 8A, control may also be partially or fully distributed. In particular, for the attraction feature 400, one PLC 480 is used to control a plurality of VFDs 481A, 481B, 481C, 481D to drive a plurality of pumps 440A, 440B, 440C, 440D to pump water from a plurality of reservoirs 441A, 441B, 441C, 441D to the attraction feature 400. In this embodiment, the valve may be omitted. The pump speeds of the pumps 440A, 440B, 440C, and 440D are directly regulated by the PLC 480 without the need for valves.

As noted above, in some embodiments, the valves may be eliminated and flow control provided by individual pairs of pumps and associated VFDs. Fig. 8B is a schematic view of a portion 500 of such an amusement ride. Portion 500 includes a slide path 502, a fluid system 504, and a control system 506.

As described with reference to fig. 1 and 5A, the sliding path may be defined by a channel, such as a sink-type slide, having a central sliding surface between the side walls. The sliding surface may be lubricated with water as in a conventional surfcraft, or may have a low friction coating. Alternatively, the passageway may be a water filled passageway having sufficient fluid therein that the vehicle may float or the vehicle may include wheels and may roll or otherwise move therein. The wall may be in close proximity to the sliding surface to assist in guiding the vehicle along a predetermined path, or further isolated from an indeterminate path of the vehicle.

In fig. 8B, the profile of the slide path 502 is shown. For example, vehicle 508 starts at a high entry point 510. The sliding path 502 is a wave-like path, wherein the path reaches from the entry point 510 down to a first valley 512, up to a first local peak 514, down to a second valley 516, up to a second local peak 518, down to a third valley 520 and up to a third local peak 522. It will be appreciated that the facility profile used is exemplary and that many other facility profiles may be used, including purely planar, uphill or downhill profiles.

In this embodiment, one or more of the first, second, and third valleys 512, 516, 520 may include a first, second, and third drain pipe 524, 526, 528, respectively, or other means for removing water that may accumulate in these relatively low regions of the sliding path 502. One or more rows of injection sources 530, 532, and 534 are provided along a sliding path between first, second, and third troughs 512, 516, and 520 and respective first, second, and third partial peaks 514, 518, and 522.

Each row of injection sources 530, 532, and 534 may be configured in the same manner as injection sources 20A, 20B described with reference to fig. 1. In particular, each row of spray sources 530, 532, and 534 can be comprised of individual spray sources spaced along a wall of slide path 502 and can include laterally aligned pairs along opposing walls. In this embodiment, the spray source may be angled to direct water in a direction at an angle to the direction of travel of the vehicle to apply a force to the vehicle to propel the vehicle along the slide path 502.

In the present embodiment, the first, second, and third rows of injection sources 530, 532, 534 extend from about a midpoint along the slope between the first, second, and third troughs 512, 516, 520 and their respective first, second, and third local peaks 514, 518, 522 to about the respective first, second, and third local peaks 514, 518, 522. However, to ensure that a vehicle traveling along slide path 502 has sufficient momentum to travel upward and past each of first, second, and third local peaks 514, 518, and 522, for example, the number of injectors in first, second, and third rows of injection sources 530, 532, and 534 and their respective locations and the locations of first, second, and third rows of injection sources 530, 532, and 534 will vary and will depend on the desired thrust and the desired duration.

It should be understood that one or more of first spray source 530, second spray source 532, and third spray source 534 may be replaced with other facility features, such as atomizers or high pressure water guns, particularly for other facility profiles that may have different water requirements.

First drain 524, second drain 526, and third drain 528, as well as rows of spray sources 530, 532, and 534 provide an interface between slide path 502 and fluid system 504.

The fluid system 504 directs water used by the amusement ride 500. The fluid system 504 includes a first pump 540A, a second pump 540B, and a third pump 540C, a water source 541, and a series of pipes. The conduits include a first 546, second 548, and third 550 output conduits from pumps 540A, 540B, and 540C, respectively, to each of the rows of injection sources 530, 532, and 534, and a return conduit 565 that returns water to the water source 541. In some embodiments, there may be more than one pump associated with each water feature. For example, if a row of injection sources 534 is grouped into two sections (per injection sources 20A and 20B in FIG. 3), then a separate pump may be used for each section, or one pump may be used for both sections.

The first output conduit 546 is in fluid communication with the water source 541 and the first pump 540A. Similarly, a second output conduit 548 is in fluid communication with the water source 541 and the second pump 540B and a third output conduit 550 is in fluid communication with the water source 541 and the third pump 540C. Each of the first, second, and third output conduits 546, 548, and 550 connect the first, second, and third pumps 540A, 540B, and 540C, respectively, with the first, second, and third bank of injection sources 530, 532, and 534, respectively. It should be appreciated that there are a number of devices through which fluid communication may be provided from the first, second, and third pumps 540A, 540B, 540C to the first, second, and third bank of injection sources 530, 532, 534. Also, each of the first pump 540A, the second pump 540B, and the third pump 540C may be connected to a separate water source rather than one water source 541.

First, second, and third branch output conduits 546, 548, and 550 may also include first, second, and third flow sensors 554, 556, and 558, respectively, and first, second, and third check valves 560, 562, and 564, respectively. Flow sensors 554, 556, and 558 are located on the grade on each of the output conduits 546, 548, and 550. In this embodiment, first, second, and third check valves 560, 562, and 564 are between first, second, and third pumps 540A, 540B, and 540C and first, second, and third flow sensors 554, 556, and 558. In other embodiments, one or more check valves may instead be disposed adjacent the water source 541 or adjacent each row of injection sources 530, 532, and 534, respectively.

The first 524, second 526 and third 528 drain pipes may be connected to a return pipe 565 that returns the drained water to the pumps 540A, 540B and 540C or an associated storage tank or reservoir 541.

Sensors may be provided along the slide path 502 to record and transmit information about the vehicle 508 passing through the slide path 502. In this embodiment, an entry sensor 570 is provided at the entry point 510 of the slide path 502. The first, second and third characteristic sensors 572, 574, 576 are arranged on the first, second and third local peaks 514, 518, 522, respectively. The portion of the facility between the inlet sensor 570 and the first characteristic sensor 572 is a first zone 571, the portion of the facility between the first characteristic sensor 572 and the second characteristic sensor 574 is a second zone 573, and the portion of the facility between the second characteristic sensor 574 and the third characteristic sensor 576 is a third zone 575. The entry sensor 570, the first characteristic sensor 572, the second characteristic sensor 574, and the third characteristic sensor 576 may measure various parameters or characteristics of the participant or the vehicle 508. For example, in some embodiments, the inlet sensor 570, the first characteristic sensor 572, the second characteristic sensor 574, and the third characteristic sensor 576 may only measure the position or passage of the vehicle 508. In other embodiments, one or more of the inlet sensor 570, the first characteristic sensor 572, the second characteristic sensor 574, and the third characteristic sensor 576 may measure different and/or additional parameters such as speed.

The inlet sensor 570, the first characteristic sensor 572, the second characteristic sensor 574, and the third characteristic sensor 576 form part of the control system 506. The control system 506 includes a controller, such as a Programmable Logic Controller (PLC) 580. In fig. 8B, the PLC 580 is shown connected to the first pump 540A, the second pump 540B, and the third pump 540C through a Variable Frequency Drive (VFD) 581. For clarity, the electrical connections of the various elements of the control system are shown in FIG. 8C. Flow sensors 554, 556, and 558 are also part of control system 506.

As can be seen from fig. 8C, the inlet sensor 570, the first characteristic sensor 572, the second characteristic sensor 574, and the third characteristic sensor 576 are connected to the PLC 580. First flow sensor 554, second flow sensor 556, and third flow sensor 558 are also connected to PLC 580 and provide feedback/input to PLC 580 to ensure that a threshold flow is achieved prior to activating the system. The control system 506 can also include a user interface 584 and a memory device 582 coupled to the PLC 580. In this embodiment, the PLC 580 is connected to the first pump 540A, the second pump 540B, and the third pump 540C through respective Variable Frequency Drives (VFDs) 581A, 581B, and 581C. The VFDs 581A, 581B, and 581C are used to regulate the operation of the pump to bring the pump output to a desired level. The PLC 580 connections to other elements of the control system are shown only schematically. It should be understood that there are many possible connection configurations, including wireless connections.

During quiet times when the facility may be operating for many minutes without passengers, the speed of pumps 540A, 540B, and 540C may be adjusted to conserve energy. Pumps 540A, 540B, and 540C may be turned down to a certain lower flow level that does not significantly affect the water balance of the overall mechanical system, but that achieves significant energy and noise reduction. For example, when the system needs to return to normal operation again, it may be actuated by an operator button, by a sensor indicating the presence or proximity of the vehicle, or by the user interface 584. For example, the system may somehow indicate to the operator whether it is safe to use a visual indicator such as a red/green traffic light system, a water gate that restricts access to a sliding feature, or a launch conveyor. When using doors or conveyors, the control system 506 will not allow the dispatch of vehicles if it is not safe for the dispatch vehicle.

In one exemplary mode of operation, the first pump 540A, the second pump 540B, and the third pump 540C are initially operated at a low frequency by the VFDs 581A, 581B, and 581C, such that little or no water will flow through the first row 530, the second row 532, and the third row 534 of spray sources. First check valve 560, second check valve 562, and third check valve 564 are oriented in a manner that allows water to flow from pumps 540A, 540B, and 540C in an output flow direction to first row of injection sources 530, second row of injection sources 532, and third row of injection sources 534 without flowing in a reverse direction.

The vehicle 508 slides past the inlet sensor 570 on the water lubricated slide path 502. The entry sensor 570 registers the presence of the vehicle 508 and communicates this to the PLC 580. The PLC 580 activates the first pump 540A via the VFD 581A. The VFD581A will signal the first pump 540A to increase the pump speed to provide enough water to push the vehicle 508 up to the first local peak 514. Water will be pumped by the pump 540A through the first conduit 546 and out through the first row of spray sources 530. At the same time, the vehicle 508 continues to slide down into the first valley 512 and then up toward the first local peak 514. As the vehicle 508 travels upward, the speed of the vehicle 508 slows. As the vehicle 508 moves past the first row of spray sources 530, the row of spray sources 530 sprays water onto the vehicle 508 and provides a force that helps push the vehicle 508 upward to the first localized peak 514.

As the vehicle 508 passes the first local peak 514, the vehicle 508 passes the first characteristic sensor 572. The first characteristic sensor 572 registers the presence of the vehicle 508 and communicates this to the PLC 580. For example, the PLC 580 may increase the pump displacement of the second pump 540B to increase water flow and pressure by ramping up the frequency of the power supplied to the second pump 540B by the VFD 581B. The pumped water will pass through the second bypass conduit 548. Water will be pumped out through the second row of injection sources 532. At the same time, the vehicle 508 continues to slide down into the second trough 516 and then up towards the second local peak 518. As the vehicle 508 travels upward, the speed of the vehicle 508 slows. As the vehicle 508 passes the second row of injection sources 532, the injection sources 532 spray water onto the vehicle 508 and provide a force that helps to push or lift the vehicle 508 upward to the second localized peak 518.

At the same time, since the vehicle 508 has passed the first bank of injection sources 530, flow from these sources may be interrupted to reduce water demand and energy consumption. To do so, the PLC 580 reduces the frequency of the first VFD581A, and the timing and rate of the reduction in the frequency of the first VFD581A may be immediately after the vehicle 508 passes the first localized peak 514 or may be delayed or more gradual. For example, depending on the water pressure in the first branch conduit 546 and the rating of the first flow valve 554, the immediate closing of the first flow valve 554 at pressure may create too high a pressure in the first output conduit 546. For example, the PLC 580 may wait to cause a pressure drop in the first branch conduit 546 via the regulation of the first pump 540A output by the PLC 580 via the first VFD 581A. In some embodiments, the first flow sensor 554 in the first output conduit 546 may provide feedback to the PLC 580, which the PLC 580 will ramp down the first VFD581A as appropriate.

In other embodiments, the operation of the VFD may be controlled by a timer set according to flow calculations or measurements based on the size and length of the pipeline, pump pressure and volume, and other known system variables used in designing a particular system. For example, where ride participants are introduced at predetermined intervals to ride by using belt conveyors or button loads that control the dispatch rate of the participants, the participants' times may be well known and may be used to control the operation of the VFD. The VFD may also be controlled by an operator.

In some embodiments, the first pump 540A may not be completely stopped, but may be operated at a low displacement to maintain a small flow of water pumped through the first row of injection sources 530 that is insufficient to lift the vehicle 508 through the first partial peak 514. The first check valve 560 prevents water from draining back through the first check valve 560 even when the first pump 540A is not pumping. Check valves may also be located elsewhere in the fluid system 504 to help control the flow and retention of water in the fluid system 504. The system may also include one or more pressure relief valves to relieve excess pressure as needed.

As the vehicle 508 passes the second local peak 518, the vehicle 508 passes the second characteristic sensor 574. The second characteristic sensor 574 registers the presence of the vehicle 508 and communicates this to the PLC 580. The PLC 580 will increase or otherwise adjust the pump displacement and pressure of the third pump 540C via the third VFD 581C. Water will be pumped through third output conduit 558 and out through third bank of spray sources 534. At the same time, the vehicle 508 continues to slide down into the third valley 528 and then up toward the third local peak 522. As the vehicle 508 travels upward, the speed of the vehicle 508 slows. When the vehicle 508 reaches the third row of spray sources 534, the spray sources 534 spray water onto the vehicle 508 and provide a force that helps push the vehicle 508 up to the third local peak 522.

In a similar manner to the first pump 540A, the second pump 540B is partially or fully de-accelerated by the second VFD 581B through the second check valve 562, which operates in a similar manner to the first check valve 560, to retain water in the fluid system 504.

As the vehicle 508 passes the third local peak 522, the vehicle 508 passes the third sensor 576. The third sensor 576 registers the presence of the vehicle 508 and communicates this to the PLC 580. In a similar manner to first and second pumps 540A, 540B, third pump 540C will be partially or fully de-accelerated to retain water in fluid system 504 by third check valve 564, which operates in a similar manner to first and second check valves 560, 562.

Throughout operation of the fluid system 504 and the control system 506, water accumulated in the first, second, and third valleys 512, 516, 520 may drain through the first, second, and third drain pipes 524, 526, 528 and return to the water source 541 through the return pipe 565.

It should be appreciated that the use of check valves 560, 562, and 564 may reduce the time it takes to achieve a desired pressure and flow rate in each of the rows of injection sources 530, 532, and 534 once valves 554, 556, and 558 are opened. Additional check valves may be installed closer to the injection source. Each individual spray source, which may be an individual nozzle, may have a dedicated check valve to retain water in the conduit closer to the spray source.

In some embodiments, the pressure requirement will be 40-55PSI and the flow requirement will be 500-900 GPM.

In some embodiments, as shown in fig. 8D, a dispensing pump may be used for multiple features. In particular, for the attraction feature 600, one PLC 680 is used to control two DOLs 681A and 681B to drive two pumps 640A and 640B to pump water from two reservoirs 641A and 641B to two features (e.g., uphill portions) of the attraction feature 600. In this embodiment, the valve may also be omitted. The pump speeds of pumps 640A and 640B are again directly regulated by PLC 680 without the need for valves.

Fig. 9 shows a perspective view of a portion of the channel 12 of the attraction motion control system 10 of fig. 1 or the attraction 200 of fig. 5A or the attraction 500 of fig. 8B. The side walls 16 and bottom 14 of the channel 12 are shown. An opening 1090 is also shown. For example, openings 1090 are provided to allow the spray sources 20A and 20B (see FIG. 1) to be angularly positioned to spray across channel 12. The angle can be adjusted along the channel and towards and away from the channel.

In some embodiments, there is no recess or suction opening defined in the wall of the vehicle, but rather a protrusion from the vehicle body. The embodiments of fig. 10A-10E depict top, side, bottom, front, and rear views, respectively, of the body of such a vehicle 1093. The vehicle 1093 of the present embodiment is a raft vehicle having a variation of the vehicle body including a front end 1092, a rear end 1094, sides 1096, and a bottom 1098. The vehicle 1093 has an inflation tube 1100 extending partially around the periphery of the vehicle 1093 and defining a front end 1092 and sides 1096. The middle of the rear end 1094 is open. The bottom portion 1098 is connected to a bottom surface of the gas filling tube 1100 (see fig. 10E) to define an interior of the vehicle 1093 for carrying passengers. In this embodiment, the vehicle 1093 also includes two backrests 1102 that allow the vehicle 1093 to accommodate two passengers.

In this embodiment, the rear of the backrest 1102 is angled such that it acts as a deflector to deflect water impacting the rear of the backrest 1102 downwardly away from the occupant. In some embodiments, deflectors are additionally provided and suspended at the rear of the boat to deflect water contacting the back of the vehicle downward away from the vehicle.

In this embodiment, as described above, the side 1096 is defined by a gas fill tube 1100 connected to a bottom 1098. As best seen in fig. 10B and 10E, the bottom surface 1104 of the tube 1100 is above the bottom surface 1106 of the bottom 1098 of the vehicle 1093 and the outer surfaces 1108 of the sides 1096 of the vehicle 1093 are outward beyond the outer surfaces 1110 of the bottom 1098. This defines a double-sided region in which the protrusions 1112 may be located. A plurality of protrusions 1112 may be spaced apart and angled along opposite sides 1096 of the vehicle to provide an impact surface onto which water from a spray source may impact to apply a force to the vehicle 1093. In this embodiment, the protrusion 1112 is below the gas fill tube 1100 and adjacent the bottom 1098, but does not extend outwardly past an outer sidewall of the side 1096 or under the bottom surface of the bottom 1104 of the vehicle. The protrusions may be flat, concave, convex or have irregular impact surfaces. They may be inclined to be perpendicular to the direction of injection from the injection source, or inclined at a smaller or larger angle. The angle, position and shape of the protrusions may be different from each other.

In some embodiments, the protrusion may be integrally formed with the vehicle 1093. In other embodiments, the protrusions 1112 may be separate components that may be attached to the vehicle 1093. In some embodiments, the protrusions may be removable and repositionable in terms of the number and angle of the protrusions. The protrusion may also be below the bottom surface of the vehicle 1093.

The protrusions may have different shapes other than the irregular shapes shown in fig. 10B and 10E. The protrusion may also extend outwardly beyond the outer surface 1108 of the vehicle 1093 or above the side 1096 of the vehicle or any combination of the protrusion and recess discussed in connection with fig. 1-8D.

FIGS. 11A-13C depict three different designs of protrusions 1112A, 1112B, and 1112C that may be attached to a vehicle 1093. The protrusions 1112A, 1112B, and 1112C have respective backing plates 1114A, 1114B, and 1114C through which openings 1116A, 1116B, and 1116C pass. The openings 1116A, 1116B, and 1116C may be used to secure the protrusions 1112A, 1112B, and 1112C to the vehicle using fasteners, such as bolts. The protrusions 1112A, 1112B, and 1112C may not have back plates 1114A, 1114B, and 1114C and openings 1116A, 1116B, and 1116C, but may be secured by other means such as adhesive. A plurality of protrusions may be formed on one back plate instead of one protrusion.

Protrusions 1112A, 1112B, and 1112C have different shapes intended to direct water impinging protrusions 1112A, 1112B, and 1112C in different directions. Arrows 1118A, 1118B, and 1118C indicate how the respective protrusions 1112A, 1112B, and 1112C direct water. Mirror images of the protrusions 1112A, 1112B, and 1112C may be provided on opposite sides of the vehicle 1093.

Protrusion 1112A has parallel spaced apart flat top 1120A and bottom 1122A. Inner wall 1124A extends alongside backing 1114A and connects with top portion 1120A and bottom portion 1122A. The inner wall 1124A is angled at about 15 deg. from the back plate 1114A. The end wall 1126A has a vertically oriented tubular shape extending between a top portion 1120A and a bottom portion 1122A. The top portion 1120A, bottom portion 1122A, inner wall 1124A and end wall 1126A together define an intake chamber having an outwardly angled rectangular opening. The water jet injected into the cavity of the protrusion 1112A follows a path defined by arrow 1118A. In particular, the water passes through a U-shaped horizontal path. The end wall 1126A functions as an impact surface. Horizontally into, against the end wall 1126A and offset to follow a semi-circle around the curvature of the end wall 1126A. The water exits horizontally along inner wall 1124A in a path that is offset in parallel from the path of the water as it enters protrusion 1112A.

The protrusions 1112B have a flat top 1120B, an open bottom, and parallel inner and outer walls 1124B, 1125B. The inner wall 1124B extends alongside the back plate 1114B and connects to the top 1120B. The inner wall 1124B is angled at about 15 deg. from the back plate 1114B. End wall 1126B has a horizontally oriented tubular shape extending between inner wall 1124B and outer wall 1125B. The top 1120B, inner wall 1124B, outer wall 1125B, and end wall 1126B together define an intake chamber having an outwardly angled rectangular opening and an open bottom. The water jet injected into the cavity of the protrusion 1112B follows a path defined by arrow 1118B. In particular, the water passes through a U-shaped path. The end wall 1126B acts as an impact surface. Advancing horizontally into, impacting the end wall 1126B and deflecting vertically downward along a U-shaped path to advance along a semi-circle following the curvature of the end wall 1126B. The water follows a path that is parallel to and offset vertically downward from the path of the water as it enters the protrusions 1112B.

Protrusion 1112C has a wedge-shaped portion and an end portion. The ends have parallel spaced apart flat top 1120C and bottom 1122C. The end wall 1126C has a vertically oriented tubular shape extending between a top portion 1120C and a bottom portion 1122C. The inside of the end wall 1126C is connected to the back 1114C. The top portion 1120C, bottom portion 1122C, and end wall 1126C together define a portion of the intake chamber.

The wedge extends alongside backing 1114C and has a triangular outer wall 1125C parallel to backing 1114C and a downwardly sloping top plate 1121C interconnecting backing 1114C and outer wall 1125C. The wedge has an open bottom and defines a second portion of the inlet chamber. The rectangular end of the wedge portion is connected to the inner half of the end portion to define a vertical rectangular inlet to the inlet chamber and a rectangular horizontal outlet from the inlet chamber. The water jet injected into the cavity of the protrusion 1112C follows a path defined by arrow 1118C. The end wall 1126C acts as an impact surface. Horizontally into, against the end wall 1126C and offset to follow a semi-circle around the curvature of the end wall 1126C. The water is then directed by the wedge to a downward angle and exits obliquely downward along the backing 1114C.

The impact of the water jet on the impact surfaces of the protrusions 1112A, 1112B, and 1112C applies a force to the vehicle 1093 to propel the vehicle forward. Fig. 14A, 14B, and 14C illustrate how the path of the water jets 1118A, 1118B, and 1118C changes as the vehicle 1093 moves forward away from the source of the water jets 1118A, 1118B, and 1118C.

Protrusions 1112A, 1112B, and 1112C are exemplary protrusions. In this embodiment, for a 4 "inlet, protrusions 1112A and 1112B have a height x length x width dimension of 2.5" x6"x3" and protrusion 1112C has a height x length x width dimension of 2.5"x8" x4 ". It should be understood that many other shapes and sizes of projections and recesses, with or without cavities, may be formed that define an impact surface that receives the force exerted by the water jet to cause movement of the vehicle 1093. The size, location and number of the protrusions and recesses may be set as desired in conjunction with the jet stream to provide the desired force to the vehicle.

In some embodiments, the recess and the protrusion may be oriented opposite the spray source such that a force exerted by the spray source on the vehicle acts in a direction opposite the direction of travel of the vehicle, for example, to decelerate the vehicle. In other embodiments, for example, for a round vehicle with identically oriented recesses around the periphery, the spray source may be provided on only one side. The force exerted on the vehicle by the spray source may cause the vehicle to rotate. In some embodiments, for example, the recesses and protrusions may be asymmetric along the sides or on opposite sides to create uneven forces applied to different areas of the vehicle.

For example, the vehicle 208 and the vehicle 508 may be of the vehicle types as described with reference to fig. 1-4C and fig. 10A-14C. However, it should be understood that other vehicles may be used, and the control system described with reference to fig. 1-8D may or may not be used with various types of vehicles, depending on the requirements of the facility of the play set.

In other embodiments, the present invention is used in connection with other types of attractions, such as the funnel attraction described in U.S. patent No.6,857,964 and the bowl attraction shown in U.S. design patent No. d521,098, the entire contents of which are incorporated herein by reference. Fig. 15 shows a circular vehicle 1152 sliding on such a bowl-like attraction structure 1150. The vehicle 1152 has a plurality of water inlet projections 1154 around the outer circumference. The plurality of waterjet spray sources 1158 are connected by an inlet tube 1156, which may be mounted above the surface of the amusement ride structure 1150 or below the surface of the amusement ride structure 1150 such that the waterjet spray sources 1158 protrude through the surface of the amusement ride structure 1150. The attraction structure 1150 has an entrance 1160 through which a circular vehicle 1152 enters the attraction structure 1150. It should be appreciated that a water jet ejected from the ejection source 1158 may impact the water intake protrusion 1154 and impart a rotational force, or, depending on the relative orientation of the water jet to the protrusion and/or recess, impart another force to slow, accelerate, or affect movement of the vehicle 1152.

In some embodiments, the fluid impact surface is below the surface of the water in the channel and is sprayed to impact the fluid impact surface by drawing a stream of water through the water in the channel.

Many modifications and variations of the present invention are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.

Claims (42)

1. An amusement ride fluid control system comprising:

a fluid source;

at least one pump;

at least one fluid feature;

a plurality of conduits interconnecting the fluid source and the at least one pump with the at least one fluid feature; and

a controller;

wherein the at least one pump is configured to pump fluid through the conduit to the at least one fluid feature; and

wherein the controller is adapted to control the at least one pump to deliver fluid to each respective fluid feature.

2. The amusement ride fluid control system of claim 1 further comprising at least one variable frequency drive intermediate the controller and the at least one pump to control each of the at least one pump based on input received from the controller.

3. The amusement attraction fluid control system of claim 1 or 2 further comprising at least one sensor, wherein the at least one sensor provides input to the controller.

4. The amusement ride fluid control system of claim 3 wherein the at least one sensor comprises at least one first sensor adapted to detect at least one characteristic of a participant.

5. The amusement ride fluid control system of claim 3 wherein the characteristic is at least one of position and velocity.

6. The amusement ride fluid control system of claim 3 wherein the at least one sensor comprises at least one second sensor adapted to detect at least one fluid flow characteristic.

7. The amusement ride fluid control system of claim 6 wherein the at least one fluid flow characteristic is at least one of fluid pressure and fluid flow rate.

8. The amusement ride fluid control system of claim 1 wherein the at least one fluid feature comprises a plurality of fluid features and the at least one pump comprises a plurality of pumps, and wherein each of the plurality of fluid features has at least one associated pump of the plurality of pumps.

9. The amusement ride fluid control system of claim 8 wherein each of the at least one pump is adapted to increase fluid flow of an associated fluid feature when the participant is proximate to the fluid feature and decrease fluid flow of the fluid feature when the participant is distal from the associated fluid feature.

10. The amusement ride fluid control system of claim 9 further comprising a variable frequency drive associated with each of the at least one pump to control fluid flow of the at least one pump.

11. A waterslide section comprising the amusement ride water control system of any one of claims 1 to 10 and a sliding surface, wherein each fluid feature is a water feature and each at least one pump is adapted to increase the water flow rate of the respective water feature as a participant slides towards each respective water feature and decrease the water flow rate of the respective water feature as a participant slides away from the respective water feature.

12. The amusement ride fluid control system of any one of claims 1 to 11 wherein the fluid feature is a water spray source.

13. An attraction comprising the attraction fluid control system of any one of claims 1-12 and a waterslide, wherein the plurality of fluid features are associated with the waterslide.

14. An attraction comprising the attraction fluid control system of any one of claims 1-12 and a water play structure, wherein the plurality of fluid features are associated with the water play structure.

15. A water control system for a water play item, comprising:

a water source;

a pump;

a plurality of water features; and

a plurality of conduits interconnecting the water source and pump with the plurality of water features;

each of the plurality of water features has a respective associated valve;

wherein the pump is configured to pump water through the conduit to the water feature;

wherein each respective associated valve is adapted to open to deliver water to each respective water feature.

16. The amusement ride water control system of claim 15 further comprising at least one sensor, wherein at least one of the associated valves is movable between an open position and a closed position based on input from the at least one sensor.

17. The amusement ride water control system of claim 15 wherein the at least one sensor comprises a plurality of sensors, wherein each respective associated valve has a respective associated sensor.

18. An amusement ride vehicle motion control system comprising:

a channel;

a plurality of fluid ejection sources disposed to eject fluid across the channel;

at least one first sensor adapted to detect when an amusement ride vehicle enters a zone of the channel;

at least one pump associated with the plurality of fluid ejection sources; and

a controller adapted to increase fluid flow of a respective fluid ejection source by the at least one pump in response to the amusement ride vehicle entering the zone.

19. The amusement ride vehicle motion control system of claim 18 further comprising at least one second sensor adapted to detect when an amusement ride vehicle leaves a zone of the channel, the controller adapted to decrease pump output to decrease the flow of the fluid spray source in response to the amusement ride vehicle leaving the zone.

20. The amusement ride vehicle motion control system of claim 19 further comprising:

a second plurality of fluid ejection sources disposed to eject fluid across the channel;

at least one third sensor adapted to detect when an amusement ride vehicle enters a second region of the channel, at least one second pump associated with a second plurality of fluid injection sources; and

the controller is adapted to increase fluid flow of the respective second plurality of fluid injection sources by the at least one second pump in response to the amusement ride vehicle entering the zone.

21. The amusement ride vehicle motion control system of any one of claims 18 to 20 wherein the respective pump is connected to the controller by a variable frequency drive, wherein the respective variable frequency drive is adapted to control the speed of the respective pump.

22. The amusement ride vehicle motion control system of any one of claims 18 to 21 wherein the channel comprises a sliding surface and the vehicle is adapted to slide on the sliding surface.

23. The amusement ride vehicle motion control system of any one of claims 18 to 21 wherein the channel is adapted to hold sufficient fluid to float the vehicle and the vehicle is adapted to float in the channel.

24. The amusement ride vehicle motion control system of any one of claims 18 to 21 wherein the channel is inclined upwardly and the fluid jet source is positioned to exert a force on a vehicle to push the vehicle upwardly along the channel.

25. The amusement ride vehicle motion control system of any one of claims 18 to 21 wherein the channel is horizontal and the fluid jet source is positioned to exert a force on a vehicle to accelerate the vehicle along the channel.

26. A method of affecting sliding movement of a vehicle on a waterslide, comprising:

arranging a channel in the water slide way;

positioning a plurality of water spray sources to spray water on vehicles in the tunnel;

sensing when a vehicle enters the passageway;

the speed of the pump is increased to spray water from the spray source at a pressure and flow rate that affects the movement of the vehicle.

27. The method of claim 26, further comprising sensing when a vehicle exits the passageway; and reducing the speed of the pump to reduce water spray from the water spray source.

28. The method of claim 26 or 27, further comprising operating the variable frequency drive to control the speed of the pump.

29. A method according to any one of claims 26 to 28 wherein the channel is inclined upwardly, the method comprising operating the fluid jet source to exert a force on a vehicle to push the vehicle upwardly along the channel.

30. A method according to any one of claims 26 to 28 wherein the passageway is horizontal, the method comprising operating the fluid jet source to exert a force on a vehicle to accelerate the vehicle along the passageway.

31. An amusement ride vehicle comprising: the vehicle includes a vehicle body and at least one of a recess and a protrusion on an outer peripheral surface of the vehicle body, the at least one of a recess and a protrusion defining a fluid impact surface angled with respect to an intended direction of motion of the vehicle to affect motion of the vehicle when the fluid impact surface is impacted by a fluid.

32. The amusement ride vehicle of claim 31 wherein at least a portion of the bottom surface of the vehicle body is adapted to slide on a sliding surface.

33. The amusement ride vehicle of claim 31 wherein the vehicle is adapted to float in a fluid.

34. The amusement ride vehicle of any one of claims 31 to 33 wherein the at least one of recesses and protrusions comprise a plurality of recesses or a plurality of protrusions spaced along opposite sides of the vehicle body.

35. The amusement ride vehicle of claim 34 wherein the vehicle includes an outer side wall and a floor and the plurality of recesses or the plurality of protrusions do not extend outwardly beyond below the outer side wall or the floor of the vehicle body or above the roof of the vehicle.

36. The amusement ride vehicle of claim 35 wherein the vehicle comprises sides and a bottom and the plurality of recesses or the plurality of protrusions are located below the sides and adjacent the bottom of the vehicle body.

37. The amusement ride vehicle of any one of claims 31 to 36 wherein the vehicle body has a forward end and a rearward end, wherein at least one of the recesses and projections has an inboard end and an outboard end, and wherein the inboard end of the at least one of the recesses and projections is closer to the forward end than to the rearward end such that the at least one of the recesses and projections is tilted forward.

38. The amusement ride vehicle of claim 37 wherein the fluid impact surface faces the rear end of the vehicle body and is concave.

39. The amusement ride vehicle of any one of claims 31 to 38 wherein at least one of the recesses and protrusions are removable and repositionable.

40. The amusement ride vehicle of any one of claims 31 to 39 further comprising at least one channel, wherein the at least one of recesses and protrusions are connected to the at least one channel to direct water away from the fluid impact surface after impact.

41. The amusement ride vehicle of claim 40 wherein the at least one channel comprises a plurality of channels and each of the at least one of recesses and protrusions is connected to a respective channel of the plurality of channels.

42. The amusement ride vehicle of claim 41 wherein at least some of the plurality of channels are interconnected.