B - Operations – Transporting – 60 – V
Patent
B - Operations, Transporting
60
V
305/5
B60V 1/04 (2006.01) B60V 1/00 (2006.01)
Patent
CA 1094614
A B S T R A C T A waterborne air cushion vehicle is disclosed which has a flat rigid upper rectangular sheet-like platform. A plurality of flat rigid longi- tudinal walls are attached substantially at right angles to the platform and depend therefrom substantially parallel with the major axis of the platform. The outermost two of the walls are disposed as sidewalls along the respective edges of the platform. A plurality of longitudinally spaced laterally aligned arrays of flexible trough-shaped skirts are respectively looped with a space therein and fastened via each longitudinal edge thereof with respect to the underside of the platform flush with but independently movable with respect to adjacent pairs of the walls but extendable to a lesser depth than that of the walls. The vehicle has a source of pressurised air admissible via apertures of fixed size at a relatively higher pressure to the skirts and also admissible at a relatively lower pressure via variable-sized openings remotely controlled and located respectively beneath the platform in communication with open- bottomed air cushion chambers each bounded by an adjacent pair of the skirts and by an adjacent pair of the walls. The depth of the walls and of the skirts is so related to the flow rate of the air that the vehicle is buoyant upon water with the walls protruding into the water sufficiently to prevent air spillage via the walls when the vehicle is urged longitudinally through the water by propulsion means. The apertures and the openings are adapted to re- admit by reverse flow at least part of the compressed air in any one of the chambers and its associated skirts independently in response to fugitive deflection of the skirts resulting from turbulence of the water, to thereby inhibit movement of the vehicle about the pitch axis thereof.
301080
Fetherstonhaugh & Co.
Mattox Darryl F.
LandOfFree
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