Compound wing aircraft

Details Compound wing aircraft Compound wing aircraft

1979-10-02

1982-06-29

Frankfort, Charles E.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244 13, 244 16, 244DIG1, D12319, B64C 3908

Patent

active

043369138

ABSTRACT:
An aircraft, either rigid-wing or a collapsible hang-glider, is provided which is a bi-plane of apparent annular-wing construction in plan view, but the wing tips of an anhedral foreplane are separated from and above the wing tips of a dihedral aftplane. In a hang-glider construction the wing tips of the foreplane may be supported above the wing tips of the aftplane by struts, the trailing edges of the foreplane wing tips being supported by the struts above the leading edges of the aftplane wings. Also in the hang-glider, the geometry of the fore and aftplanes can be varied by moving their points of connection to the keel therealong.

REFERENCES:
patent: 1264037 (1918-04-01), Emmons
patent: 3883092 (1975-05-01), Ditto
patent: 3942747 (1976-03-01), Wolkovitch
patent: 3995799 (1976-12-01), Bartolini
patent: 4050654 (1977-09-01), Heckman
patent: 4053125 (1977-10-01), Ratony
patent: 4090681 (1978-05-01), Zimmer

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