Aeronautics and astronautics – Aircraft – heavier-than-air – Airplane and fluid sustained
Patent
1981-12-18
1984-06-05
Frankfort, Charles E.
Aeronautics and astronautics
Aircraft, heavier-than-air
Airplane and fluid sustained
244 23C, 416 23, B64C 2700, B64C 3906
Patent
active
044524102
ABSTRACT:
An aircraft containing aerodynamic and gyroscopic stability that has a high angle of take-off and landing capabilities, with high speed horizontal powered flight, but is also able to sustain power-off flight with auto-rotation of its multiple extending airfoils. The fuselage has the shape of an inverted saucer with aerodynamic configuration and has an open circular track at its periphery; and riding in this track is a rotary frame and extended airfoil assembly that isin-line with the fuselage. Each extending airfoil contains solid weighted bodies at their tips and this rotary frame and extended airfoil assembly is rotated on the track by an internal power unit. The extending airfoils taper toward their tips and these tips have a knife sharp edge for penetrating the air resistance. Special flaps on the airfoils function for creating additional lift in the downwind quadrant, but in the power-off flight mode, when the rotary frame and extending airfoil assembly is disengaged; the dual purpose flap and trap flap combine to function to trap the slip-stream causing the rotary frame and extended airfoil assembly to rotate. Mounted to the surface of the fuselage are forward thrust engines with rearward extending booms on which are located the tail assembly with flight control surfaces.
REFERENCES:
patent: 1715427 (1929-06-01), Pitcairn
patent: 2372481 (1945-03-01), Gagas
patent: 2716460 (1955-08-01), Young
patent: 2743885 (1956-05-01), Peterson
patent: 3514053 (1970-05-01), McGuinness
patent: 3572613 (1971-03-01), Porter
patent: 3599902 (1971-08-01), Thomley
patent: 3900176 (1975-08-01), Everett
Everett Robert A.
Frankfort Charles E.
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