Vibration Suppressing Trunk Fingers for Air Cushion Devices.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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This invention relates to an aircraft air cushion takeoff and landing system with a flexible trunk section in the form of a large expandable tube, having multiple air exhaust holes in the bottom thereof, encircling the bottom of the fuselage, and a group of flexible finger-like protrusions beneath the forward section of the trunk. The downwardly extending finger-like protrusions make intermittent contact with the ground surface to suppress vertical vibrations in the trunk when the aircraft is hovering at ground level with the trunk inflated.
- Surface Effect Vehicles and Amphibious Vehicles