Slope landing compensator system

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes

Patent

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Details

244104FP, 267 65D, B64C 2522, B64C 2558

Patent

active

040625079

ABSTRACT:
A slope landing compensator system for allowing helicopters with air/oil strut type landing gear to land on inclined surfaces while maintaining the air frame in a more upright attitude, comprising two pressure responsive valves, an interconnecting line with a conventional on/off valve between the two valves. A pressure responsive valve is mounted to each of the main landing gear struts with an interconnecting line between the two so that during landing on an inclined surface, as the up slope gear touches the surface and as the strut compresses the internal pressure travels across to the down slope strut until the up slope strut has compressed to a predetermined pressure at which time pressure is sufficient to close the pressure responsive valve of the up slope strut to give firm support and so that all the pressure is not transmitted to the down slope strut and allow the up slope strut to bottom out. The down slope strut now has a higher pressure and will compress less than normal, allowing both main landing gears of the helicopter to be firmly in contact with the surface while maintaining the air frame in a more upright attitude.

REFERENCES:
patent: 2179144 (1939-11-01), Buttner
patent: 2933271 (1960-04-01), Maltby

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