CA1098498A - Helicopter landing platform - Google Patents
Helicopter landing platformInfo
- Publication number
- CA1098498A CA1098498A CA309,519A CA309519A CA1098498A CA 1098498 A CA1098498 A CA 1098498A CA 309519 A CA309519 A CA 309519A CA 1098498 A CA1098498 A CA 1098498A
- Authority
- CA
- Canada
- Prior art keywords
- grid structure
- landing platform
- helicopter
- helicopter landing
- platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
Abstract A helicopter landing platform has a perforate surface above a space in which nozzles and pipes are arranged for supplying foam-based fire extinguishing substances in the event of a fire.
Description
1C3 ':a84~8 This invention concerns a helicopter landing platform.
Helicopter landing platforms are found in large numbers both off-shore and on land, particularly related to the oil exploration industry. It is common practice on offshore drilling rigs and other marine installations to cover the landing platforms with a rope mesh to prevent the helicopters from slippingO
Should a helicopter be wrecked during the process of landing or take-off, the fire hazard is considerable. In the case of a fire, burning fuel oil will most probably flow on to the landing platform and spread rapidly to surrounding areas. The anti-slip rope mesh will burn away. In windy conditions~ the landing platform on the leeward side of the helicopter will be covered in flames. Under these circumstances, it is imperative for anyone on board the helicopter to get quickly out of the craft and through the flames on the landing platform to safety.
It is widely recognised that action taken during the first few instants of a fuel oil fire determines whether anyone on board the helicopter may be brought to safety and the fire put out.
Fire extinguishing equipment at existi~lg helicopter landing plat-forms is mostly portable equipment stationed along the perimeter of the
Helicopter landing platforms are found in large numbers both off-shore and on land, particularly related to the oil exploration industry. It is common practice on offshore drilling rigs and other marine installations to cover the landing platforms with a rope mesh to prevent the helicopters from slippingO
Should a helicopter be wrecked during the process of landing or take-off, the fire hazard is considerable. In the case of a fire, burning fuel oil will most probably flow on to the landing platform and spread rapidly to surrounding areas. The anti-slip rope mesh will burn away. In windy conditions~ the landing platform on the leeward side of the helicopter will be covered in flames. Under these circumstances, it is imperative for anyone on board the helicopter to get quickly out of the craft and through the flames on the landing platform to safety.
It is widely recognised that action taken during the first few instants of a fuel oil fire determines whether anyone on board the helicopter may be brought to safety and the fire put out.
Fire extinguishing equipment at existi~lg helicopter landing plat-forms is mostly portable equipment stationed along the perimeter of the
2~ landing platform. If a fire occurs in windy conditions~ areas of the landlng platform leeward of the helicopter will be covered in flames, and it will be inpossible to reach fire extinguishing equipment stationed on this side of the helicopterO
In windy conditions, foam-based fire extinguishing equipment is useless on existing landing platforms as the foam will be blown away by the wind instead of covering the fire and suffocating the flames. The only :
84~8 suitable fire fighting equipment is therefore po~Yder based. Water hoses areinstalled on all helicopter landing platforms, but water cannot be used to put out a fuel oil fire. Water may only be used for cooling purposes after the fire has been extinguished, as hot materials may easily re-ignite the fuel oil.
In order to ensure a reasonable level of safety at existing heli-copter landing platforms, a large number of portable fire extinguishers are required and also a large number of trained personnel to operate them.
The object of this invention is to provide a landing platform where burning fuel oil escaping from a wrecked helicopter will be suffocated as it meets the landing platform.
According to the invention, there is provided a helicopter landing platform, comprising a grid structure disposed above a level surface and resting on said surface by means of a supporting framework, thereby to create a space between the grid structure and said surface, and means in said space for introducing a fire extinguishing substance into said space, said grid structure comprising a fine mesh grid structure which rests on a coarse mesh grid structure.
Preferably, the grid structure and the supporting framework is 2Q surrounded by a rim.
The helicopter landing platform may consist of several separate elements, each element consisting of grid structure, supporting framework, piping with nozzles for fire extinguishing substances, and surrounding rim.
One embodiment of the invention will now be described, by way of example, with reference to the accompanying diagramatic drawing which shows in perspective a section of a helicopter landing platform in accordance with the invention and with part of the surrounding rim removed.
. -2-~ : - , . . . .:
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1~a'84~8 Reference number 1 on the drawing denotes a level surface, which could well be an ordinary known landing platform. On surface 1 rests a number of elements 2 which are positioned adjacent to each other and together make up the helicopter landing platform according to the invention. Each element 2 is constructed as follows: On its underside, the element 2 has a supporting framework 3 which rests on surface 1. A coarse-mesh grid structure 4 rests on the supporting framework 3. A fine-mesh grid structure 5 rests on the coarse-mesh grid structure 4 and forms the top surface of the helicopter landing platform. Framework 3 and grid structures 4 and 5 are surrounded by a rim 6 which has a number of openings for drainage 7 along its lower edge.
In the space 8 between surface 1 and the coarse-mesh grid structure 4 is placed a network of pipes 9 with nozzles (not shown on the drawing) for fire extinguishing substances from a central foam producing plant ~not shown on the drawing). A curved cover is placed above each nozzle to force the foam from the nozzle downwards to ensure that the elements 2 are filled first at the bottom and the foam then rises evenly in the elements 2. The fine-mesh ~~ grid 5 restricts the foam and prevents it from being forced through the top surface of the element before the element 2 has first been completely filled.
Excess foam will thus be forced through the upper surface of element 2 as long as foam is supplied through the nozzles.
It will only take a few seoonds to fill the elements 2 with foam once the foam producing plant starts supplying foam through the nozzles.
Burning fuel oil from the wreckage of a helicopter on the landing platform will flow into the elements 2 and be suffocated instantaneously. The fuel oil will remain at the bottom of the elements 2 or it will be drained away.
The elements 2 are of such heigth that any fuel oil at the bottom of the : , ~ :: .
.. : - : ~ ~ ::
.. .: . :
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lQQ~4~8 elements will be covered by a sufPiciently thick layer of foam to avoid re-ignition. Wind, regardless of force~ will not be able to blow away the foam in the elements 2.
Anyone on board a wrecked helicopter will be safe from the hazards of a fuel oil fire as soon as they get out from the craft and on to the foam covered platform. Persons whose clothing is on fire may roll on the platform, where foam is constantly rising up through the grid 5, and thus effectively extinguish burning clothesO
The helicopter landing p]atform is, according to the invention, also equipped with portable fire extinguishing equipmentO This equipment `~ may be used to fight the fire in the helicopter itself, a task greatly facilitated as the landing platform will not be covered with burning fuel oil.
It is obvious that, according to the invention, the helicopter landing platform need not be covered by a rope mesh to prevent the helicopter from slipping, as the grid structure 5 provides a non-slip surface.
It is a considerable advantage that the landing platform according to the invention wiIl always provide a dry landing surface, as rainwater cannot collect in large shallow pools of water as it often does on existing platforms.
A further advantage providad by the invention is that small quan-tities of lubrication oil which normally leak from helicopters stationary on the platform, will not collect on the surface and thus make it slippery, as is the case on existing landing platforms.
Should a helicopter experience any difficulties during flight~ and an emergency landing can be foreseen, the landing platform can, of course, be covered by foam in advance and without any possibility of the foam being blown away. The same procedure may be followed if one is concerned with the danger -, : . ; : - , ~-.. , .- .
.: :
. .
1Cl '~4~
arising from static electricity being discharged as a helicopter touches down on the landing platform.
. . . ~ . : . . :
: :: . :~ : , : : j: : : :
- ~ , . , ; ~ ::
:
In windy conditions, foam-based fire extinguishing equipment is useless on existing landing platforms as the foam will be blown away by the wind instead of covering the fire and suffocating the flames. The only :
84~8 suitable fire fighting equipment is therefore po~Yder based. Water hoses areinstalled on all helicopter landing platforms, but water cannot be used to put out a fuel oil fire. Water may only be used for cooling purposes after the fire has been extinguished, as hot materials may easily re-ignite the fuel oil.
In order to ensure a reasonable level of safety at existing heli-copter landing platforms, a large number of portable fire extinguishers are required and also a large number of trained personnel to operate them.
The object of this invention is to provide a landing platform where burning fuel oil escaping from a wrecked helicopter will be suffocated as it meets the landing platform.
According to the invention, there is provided a helicopter landing platform, comprising a grid structure disposed above a level surface and resting on said surface by means of a supporting framework, thereby to create a space between the grid structure and said surface, and means in said space for introducing a fire extinguishing substance into said space, said grid structure comprising a fine mesh grid structure which rests on a coarse mesh grid structure.
Preferably, the grid structure and the supporting framework is 2Q surrounded by a rim.
The helicopter landing platform may consist of several separate elements, each element consisting of grid structure, supporting framework, piping with nozzles for fire extinguishing substances, and surrounding rim.
One embodiment of the invention will now be described, by way of example, with reference to the accompanying diagramatic drawing which shows in perspective a section of a helicopter landing platform in accordance with the invention and with part of the surrounding rim removed.
. -2-~ : - , . . . .:
~ ,. -.
: ~ . ;-. ~ . .. :
1~a'84~8 Reference number 1 on the drawing denotes a level surface, which could well be an ordinary known landing platform. On surface 1 rests a number of elements 2 which are positioned adjacent to each other and together make up the helicopter landing platform according to the invention. Each element 2 is constructed as follows: On its underside, the element 2 has a supporting framework 3 which rests on surface 1. A coarse-mesh grid structure 4 rests on the supporting framework 3. A fine-mesh grid structure 5 rests on the coarse-mesh grid structure 4 and forms the top surface of the helicopter landing platform. Framework 3 and grid structures 4 and 5 are surrounded by a rim 6 which has a number of openings for drainage 7 along its lower edge.
In the space 8 between surface 1 and the coarse-mesh grid structure 4 is placed a network of pipes 9 with nozzles (not shown on the drawing) for fire extinguishing substances from a central foam producing plant ~not shown on the drawing). A curved cover is placed above each nozzle to force the foam from the nozzle downwards to ensure that the elements 2 are filled first at the bottom and the foam then rises evenly in the elements 2. The fine-mesh ~~ grid 5 restricts the foam and prevents it from being forced through the top surface of the element before the element 2 has first been completely filled.
Excess foam will thus be forced through the upper surface of element 2 as long as foam is supplied through the nozzles.
It will only take a few seoonds to fill the elements 2 with foam once the foam producing plant starts supplying foam through the nozzles.
Burning fuel oil from the wreckage of a helicopter on the landing platform will flow into the elements 2 and be suffocated instantaneously. The fuel oil will remain at the bottom of the elements 2 or it will be drained away.
The elements 2 are of such heigth that any fuel oil at the bottom of the : , ~ :: .
.. : - : ~ ~ ::
.. .: . :
: . : - ~
lQQ~4~8 elements will be covered by a sufPiciently thick layer of foam to avoid re-ignition. Wind, regardless of force~ will not be able to blow away the foam in the elements 2.
Anyone on board a wrecked helicopter will be safe from the hazards of a fuel oil fire as soon as they get out from the craft and on to the foam covered platform. Persons whose clothing is on fire may roll on the platform, where foam is constantly rising up through the grid 5, and thus effectively extinguish burning clothesO
The helicopter landing p]atform is, according to the invention, also equipped with portable fire extinguishing equipmentO This equipment `~ may be used to fight the fire in the helicopter itself, a task greatly facilitated as the landing platform will not be covered with burning fuel oil.
It is obvious that, according to the invention, the helicopter landing platform need not be covered by a rope mesh to prevent the helicopter from slipping, as the grid structure 5 provides a non-slip surface.
It is a considerable advantage that the landing platform according to the invention wiIl always provide a dry landing surface, as rainwater cannot collect in large shallow pools of water as it often does on existing platforms.
A further advantage providad by the invention is that small quan-tities of lubrication oil which normally leak from helicopters stationary on the platform, will not collect on the surface and thus make it slippery, as is the case on existing landing platforms.
Should a helicopter experience any difficulties during flight~ and an emergency landing can be foreseen, the landing platform can, of course, be covered by foam in advance and without any possibility of the foam being blown away. The same procedure may be followed if one is concerned with the danger -, : . ; : - , ~-.. , .- .
.: :
. .
1Cl '~4~
arising from static electricity being discharged as a helicopter touches down on the landing platform.
. . . ~ . : . . :
: :: . :~ : , : : j: : : :
- ~ , . , ; ~ ::
:
Claims (3)
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A helicopter landing platform, comprising a grid structure disposed above a level surface and resting on said surface by means of a supporting framework, thereby to create a space between the grid structure and said surface, and means in said space for introducing a fire extinguishing substance into said space, said grid structure comprising a fine mesh grid structure which rests on a coarse mesh grid structure.
2. Helicopter landing platform as claimed in claim 1 characterized by the grid structure and supporting framework being surrounded by a rim.
3. Helicopter landing platform as claimed in claim 1 or claim 2 characterized by said platform consisting of several separate elements in side-by-side relationship, each element consisting of grid structure, supporting framework, piping with nozzles for fire extinguishing substances, and surrounding rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA309,519A CA1098498A (en) | 1978-08-17 | 1978-08-17 | Helicopter landing platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA309,519A CA1098498A (en) | 1978-08-17 | 1978-08-17 | Helicopter landing platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1098498A true CA1098498A (en) | 1981-03-31 |
Family
ID=4112141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA309,519A Expired CA1098498A (en) | 1978-08-17 | 1978-08-17 | Helicopter landing platform |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1098498A (en) |
-
1978
- 1978-08-17 CA CA309,519A patent/CA1098498A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |