Balance-bar hub for a twin blade rotor

Details Balance-bar hub for a twin blade rotor Balance-bar hub for a twin blade rotor

1986-11-17

1988-07-05

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Nonmetallic resilient mounting

416102, 416148, 416140, B64C 2736

Patent

active

047551062

ABSTRACT:
The invention provides a balance bar twin blade hub. A beam is formed of a tube made from a composite material of evolutive form whose section is cylindrical at its end on the blade side and progressively elliptical as far as its central connection part. It is connected to a support stirrup 2 conical stratified stops 4 forming balance bar bearings identical to the conical stratified stops forming the centrifugal force take up and angle of attack bearings providing the connection between the blade 16 and the beam.

REFERENCES:
patent: 2949965 (1960-08-01), De Tore et al.
patent: 3669566 (1972-06-01), Bourquardez et al.
patent: 3790302 (1974-02-01), Pascher
patent: 3804552 (1974-04-01), Covington
patent: 3807896 (1974-04-01), Johnson
patent: 3967918 (1976-07-01), Mouille et al.
patent: 4222709 (1980-09-01), Mouille
patent: 4333728 (1982-06-01), Drees et al.
patent: 4515525 (1985-05-01), Doman
patent: 4557666 (1985-12-01), Baskin et al.
patent: 4621980 (1986-11-01), Reavely et al.

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