Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and fluid sustained
Patent
1979-05-30
1981-12-29
Frankfort, Charles E.
Aeronautics and astronautics
Aircraft, heavier-than-air
Airplane and fluid sustained
244 23C, 244 34A, 244 93, B64C 3906
Patent
active
043078567
ABSTRACT:
An annular wing particularly suited for use in supporting in flight an aircraft characterized by the absence of directional stabilizing surfaces. The wing comprises a rigid annular body of a substantially uniformly symmetrical configuration characterized by an annular positive lifting surface and cord line coincident with the segment of a line radiating along the surface of an inverted truncated cone whereby a decalage is established for the leading and trailing semi-circular portions of the body, relative to instantaneous line of flight, and a dihedral for the laterally opposed semi-circular portions of the body, relative to the line of flight, the direction of flight and climb angle or glide slope angle being established by selectively positioning the center of gravity of the wing ahead of the aerodynamic center along the radius coincident with an axis for a selected line of flight.
REFERENCES:
patent: 2953320 (1960-09-01), Parry
patent: 3253805 (1966-05-01), Taylor
patent: 3355124 (1967-11-01), Kelsey
patent: 3387801 (1968-06-01), Kelsey
patent: 3432120 (1969-03-01), Guerrero
patent: 3489374 (1970-01-01), Morcom
patent: 3985320 (1976-10-01), Brady
patent: 4120468 (1978-10-01), Fischer
Frankfort Charles E.
Manning John R.
McCaul Paul F.
The United States of America as represented by the Administrator
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