Hang glider having inflatable airfoil

Details Hang glider having inflatable airfoil Hang glider having inflatable airfoil

1977-06-17

1978-09-26

Kelmachter, Barry L.

Aeronautics and astronautics

Aircraft, heavier-than-air

Airplane sustained

244219, 244DIG1, B64C 3102

Patent

active

041164067

ABSTRACT:
A high performance hang glider includes a frame to which is attached flexible sail fabric to create a delta-shaped Rogallo wing. The sail is of double thickness throughout a substantial portion of the wing area to provide an envelope inflatable in flight by air entering an intake opening at the nose of the wing and exhausting through nozzles in the underside of the wing tips. A more efficient double-surface airfoil is thus provided which automatically changes its camber in response to changes in speed for optimum performance.

REFERENCES:
patent: RE26427 (1968-07-01), Jalbert
patent: 2764375 (1956-09-01), Lemoigne
patent: 3524613 (1970-08-01), Reuter et al.
patent: 3558087 (1971-01-01), Barish
patent: 3749337 (1973-07-01), Jalbert
patent: 3822844 (1974-07-01), Sutton
patent: 3944169 (1976-03-01), Bede
"Phoenix SX Soaring Kite" Hang Gliding, Don Poynter, 1976, p. 158.
"Phoenix SX", "Hang Gliding", Dec. 1976.

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