Dual leading edge ram air air foil

Details Dual leading edge ram air air foil Dual leading edge ram air air foil

1993-10-29

1994-11-29

Bucci, David A.

Aeronautics and astronautics

Safety lowering devices

Parachutes

244152, 244153R, 244902, B64D 1702, B64D 1718, B64D 1734

Patent

active

053682599

ABSTRACT:
A ram air wind power device. Parallel chambers of a sail fabricated from flexible material provide structure to the sail when filled with ram air. The chambers have openings at each end and each opening contains a valve. The openings to the parallel chambers provide two leading-trailing edges of the sail. One of the leading-trailing edges will function as a leading edge if the openings on that edge is facing into the wind, in which case the valves of the chambers at that edge will be open and the valves in the chambers at the other edge will be closed. When the other leading-trailing edge faces into the wind that edge becomes the leading edge. Preferred embodiments include kites, parachutes and gliders.

REFERENCES:
patent: 3285546 (1966-11-01), Jalbert
patent: 4406433 (1983-09-01), Radkey et al.
patent: 4771970 (1988-09-01), Sutton
patent: 4860970 (1989-08-01), Roselli
patent: 4930726 (1990-06-01), Jalbert
patent: 5012993 (1991-05-01), Schaforth
patent: 5169092 (1992-12-01), Murakami
patent: 5180123 (1993-01-01), Lin

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