Aircraft rotor and aircraft

Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes

Reexamination Certificate

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C244S012200

Reexamination Certificate

active

06837457

ABSTRACT:
An aircraft rotor and an aircraft which aircraft has a body and a rotor arranged to it, the rotor having at least two blades. The rotor is arranged to rotate around a substantially vertical axis. The blades are arranged in such a manner that, when rotating, they form a conical surface, whereby to provide ascending force, the ascending force coefficients of the blades are adjusted to be positive and to provide propulsive force, the ascending force coefficients of the blades on the forward side and on the rear side are adjusted to have opposite signs.

REFERENCES:
patent: 2397632 (1946-04-01), Stuart
patent: 3288396 (1966-11-01), Gouin
patent: 3437290 (1969-04-01), Norman
patent: 3606209 (1971-09-01), Rosta et al.
patent: 3774865 (1973-11-01), Pinto
patent: 4478379 (1984-10-01), Kerr
patent: 4913376 (1990-04-01), Black
patent: 5106035 (1992-04-01), Langford
patent: 5297759 (1994-03-01), Tilbor et al.
patent: 5683060 (1997-11-01), Iturralde
patent: 6158960 (2000-12-01), Marsi
patent: 2195581 (1998-07-01), None
patent: 26 04 575 (1976-08-01), None
patent: 27 25 221 (1978-12-01), None

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