Air cushion vehicles

Details Air cushion vehicles Air cushion vehicles

1978-03-02

1979-10-02

Peters, Jr., Joseph F.

Motor vehicles

Surface effect vehicles

Flexible skirt

B60V 116

Patent

active

041695143

ABSTRACT:
Cushion sealing at the rear of an air cushion vehicle comprises a flexible skirt that is attached to rigid body structure of the vehicle so as to extend downwardly therefrom and define a plurality of inter-communicating inflatable compartments positioned one above the other. These inflatable skirt compartments communicate by way of a first duct with a source of pressurized air on the vehicle, and by way of a second duct with cushion space at the underside of the vehicle. The second duct offers low impedance to the transfer of air between the skirt compartments and the cushion space, whereby in operation, when the skirt is deflected, air transfers from the skirt compartments to the cushion without any substantial rise in the skirt inflation pressure, which would tend to increase the stiffness of the skirt. On the other hand, when the cushion pressure increases to above skirt inflation pressure, air can flow from the cusion to these skirt compartments to increase the stiffness of the skirt so that it maintains its effectiveness as a cushion seal.

REFERENCES:
patent: 3258080 (1966-06-01), Williams et al.
patent: 3291237 (1966-12-01), Hopkins et al.
patent: 3321039 (1967-05-01), Watts
patent: 3379271 (1968-04-01), Hopkins et al.
patent: 3921753 (1975-11-01), Pont

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