Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1992-04-06
1994-03-29
Focarino, Margaret A.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
244 1719, 244 1721, 446 36, 446 37, 446 57, B64C 2700
Patent
active
052977595
ABSTRACT:
A rotary aircraft includes a cylindrically tubular hub mounting a plurality of outwardly extending, resiliently flexible blades. The blades are uniformly spaced around the hub and its central axis and fixed in pitch. Outer tips on each of the blades are downwardly turned and outwardly turned sufficiently to balance the lift generated by the blades from air striking the aircraft horizontally when the aircraft is in hover to provide passive stability to the aircraft. A pair of propellered electric motors are mounted on a diametrically opposing pair of the blades, pitched transversely to the central axis of the hub and to a plane perpendicular to the central axis, to simultaneously provide both lift and rotation. A battery supplies all power used by the aircraft while radio control circuitry in the hub permits variation of the power supplied to the motors for altitude control of the aircraft.
REFERENCES:
patent: 1554065 (1925-09-01), Blair
patent: 1632179 (1927-06-01), Foerster
patent: 1697009 (1929-01-01), Isacco
patent: 2638707 (1953-05-01), Baker
patent: 2673696 (1954-03-01), Pullin et al.
patent: 2816764 (1957-12-01), Gleason
patent: 2917255 (1959-12-01), Boyd
patent: 2949693 (1960-08-01), McRoskey
patent: 3010678 (1961-11-01), Gose
patent: 3013746 (1961-12-01), Siebenthal
patent: 3176413 (1965-04-01), Dornier et al.
patent: 3181816 (1965-05-01), Pfeiderer
patent: 3394906 (1968-07-01), Rogers
patent: 3662487 (1972-05-01), Seefluth
patent: 3881729 (1975-05-01), Block et al.
patent: 3955817 (1976-05-01), Davis
patent: 4184654 (1980-07-01), Herrera
patent: 4975022 (1990-12-01), Perry
patent: 5030157 (1991-07-01), Silverglate
Bosch Warren E.
Corsiglia Jeffrey
Drees Herman M.
Sink Charles J.
Tilbor Neil
Ellis Christopher P.
Focarino Margaret A.
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