DE2810798A1 - High speed watercraft of trimaran type - has two load-carrying hulls at rear with small stabiliser leading and tiltable and hulls have retractable foils - Google Patents

Abstract

The high-speed watercraft consists of a trimaran the three floats (1, 2, 3) being at the corners of a narrow-base rigid triangular frame with the apex leading. The front (1) is merely a stabiliser, the others being the load-carriers; all three are flat, planing-hull shaped. A transverse pivot for the front float permits variation of its attitude with speed and the other floats carry submerged foils (4) with variable depth setting so that the craft can operate as a hydrofoil. The foils are rotatable about their vertical axis to improve stability when turning.

Description

description

In order to obtain a fast type of boat, based on the studies of the boat accident of the racing boat of major Coops (am.) continues, boats in the American Everglads, as well as take-off and landing behavior of 2-float seaplanes and hovercraft boats a new type of trimaran float developed. This hull consists of 2 pieces of support float - 2 -3 - with corresponding stability distance from each other, as well as those positioned forward and between the two carrying floats - 2 - 3 Stabilization swimmer - 1 - which due to its function is not a big one Have water displacement brings. The three swimmers stand together in one pointed triangle - a - b -c - sheet l.Ze: uZ All 3 swimmers are with a stiff Base frame connected to one another. Only the front stabilizer float - 1 - has a joint located in the center of gravity of the extension, which enables that this float - 1 - is adjustable about the horizontal axis.

At different driving speeds, the float becomes - 1 - in its angle optimally adjusted to the surface of the water and acts as a result as a hydrofoil, upstream of the actual sobts focus.

The wing in the float - 2 - 3 - 4 - will also adjusted according to the driven speed, or can be switched off depending on the journey the floats - 2 - 3 - are extended, which means that this system from a Cleiter to a hydrofoil, with the advantage nevertheless in the stabilization swim mer - 1 - to have a "fixed point".

This forward stabilizing float, - 1 - which one works simultaneously as a "wing" and with the rear edge, causes around its vertical pivot point a precise steering without strong drift, how which is common with the usual Katermaranen - Trimaran boats.

This boat system ensures a very high level of positional stability in each Axis reached, even during fast maneuvers. This makes this system suitable good for military tasks.

In order to be able to navigate shallow waters, a propeller drive was used for this purpose chosen. The boat can also be driven with a conventional drive.

As previously stated, under the carrying floats - 2 - 3 - One wing each according to the calculation, - 4 - which is hydraulic or mechanical out of the support float - 2 - 3 - while tilting it at the same time of the stabilizing float - 1 - around its horizontal axis - sheet 4 - with the Winkel, «this measure is used for very fast travel, with the boat in turn with three points a - b - c rests on the water.

So that the boat does not move sideways from the wings if it changes course spontaneously - 4 - slips down, both wings are - 4 - around the vertical axis - d -with coupled to the rudder so that it can be rotated.

In order to be able to take the boat on land in the required situation, a special roller system is installed in each of the three floats - 1 - 2 - 3 -5-This rolling system consists of an endless belt, calculated length and width - 6 - which in the tensioned state runs over the rollers - 7-8 -.

This endless belt made of a suitable material is mechanical or hydraulic by means of the rollers 9 - lo or more, from the float - 2-3 out to the bottom pressed, in direction - e - In the retracted state is the lower endless piece of tape - 6 - level with the bottom of the boat.

Claims (5)

1.) Claims from Zg. Sheets 4 and 5 speed boat system as a trimaran in a special arrangement, characterized in that within a triangle -, a - b- c - there is always a float with buoyancy. The floats - 2 - 3 - have a load-bearing function, whereby the swimmer - 1 - at point - t - a stabilizing and buoyant function Has. 2.). Claim, characterized in that each of the swimmers - 1 - 2 - 3 - are designed as "flat gliding floats". 3.) Patent claim, characterized in that each of the two airfoils - t »- um-its vertical axis - d -is arranged to be rotatable at any angle0 4.) Claim, characterized in that in each of the floats - 1 - 2 - 3 a suitable rolling system for land travel either produced by an endless belt, or by wheels - rollers - is built in. This measure only applies to the claim described in 1). 5.) The propeller of the propulsion system has to stop the boat or to enable a reverse drive a negative angle of attack. Claim, characterized in that the propeller has a negative angle of attack of up to 45! 10.