Helicopter rotor equipped with flaps

Details Helicopter rotor equipped with flaps Helicopter rotor equipped with flaps

1996-02-26

1997-06-17

Verdier, Christopher

Fluid reaction surfaces (i.e., impellers)

With means moving working fluid deflecting working member...

244212, 244215, B64C 27615

Patent

active

056392150

ABSTRACT:
A blade of the rotor is attached to a main rotor shaft, and is rotated counterclockwise at a high speed when viewed from above. In the vicinity of the blade tip, a flap having a wing shape in section is pivotally supported with a hinge so as to be angularly displaceable and at the end a part of the rear end of the blade is cut out. A hinge line which indicates the center of the angular displacement of the hinge is formed so as to be parallel to a straight line passing through the rotation center of the rotor and the center of gravity of the flap. A helicopter rotor equipped with flaps is provided in which the influence of the centrifugal force acting on the center of gravity of a blade can be largely reduced, and a flap control mechanism can be reduced in size and weight.

REFERENCES:
patent: 2497465 (1950-02-01), Mullin
patent: 2642143 (1953-06-01), Miller
patent: 2776718 (1957-01-01), Zuck
patent: 3077934 (1963-02-01), Hartswick
patent: 3129769 (1964-04-01), Hofbauer et al.
patent: 3213944 (1965-10-01), Nichols et al.
patent: 3589831 (1971-06-01), Lemnios et al.
patent: 4461611 (1984-07-01), Michel
European Search Report, European Patent Office, Application No. EP 96 20 0549, Date of completion of the search: 1 Jul. 1996, 4 pages.

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