Device for damping the drag of the blades of a rotor

Details Device for damping the drag of the blades of a rotor Device for damping the drag of the blades of a rotor

1996-05-09

1997-06-10

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Lead-lag type rotor blade movement

416107, 416140, B64C 2751

Patent

active

056369700

ABSTRACT:
The device comprises, between two blades and their members linking them to the hub, three levers articulated by ball joints to the members and to the hub, the two levers pivoting on the third one about axes of pivoting parallel to each other and perpendicular to the common plane passing through the centres of the ball joints. At least one of the levers comprises at least one drag damper.

REFERENCES:
patent: 2494985 (1950-01-01), Campbell
patent: 2754937 (1956-07-01), Buivid
patent: 3302726 (1967-02-01), Stanley
patent: 3484173 (1969-12-01), Rubicki
patent: 4304525 (1981-12-01), Mouille
patent: 4915585 (1990-04-01), Guimbal
14th European Rotorcraft Forum--Paper n.degree. 45--20/23 Sep. 1988.
"Design, Evaluation and proof-of-concept flights of a main rotor interblade viscoelastic damping system" by Guimbal Bruno.

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