Main helicopter rotor

Details Main helicopter rotor Main helicopter rotor

1991-04-05

1992-10-20

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

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

416134A, 416140, 416141, 416244R, 416500, B63H 106

Patent

active

051565277

ABSTRACT:
A main helicopter rotor has a number of blades, and a drift shaft supporting at its top end, a hub consisting of a rigid annular body integral and coaxial with the drive shaft. An elastically deformable torodial body surrounds and is connected to the annular body for defining, with the same, a closed-section torodial assembly. Each blade is connected to the hub by a connecting element extending at least partially through the annular body and the torodial body, and connected respectively to the same by a first and second spherical elastomeric bearing.

REFERENCES:
patent: 3700352 (1972-10-01), Gorndt
patent: 4231705 (1980-11-01), Watson
patent: 4281966 (1981-08-01), Duret et al.
patent: 4297078 (1981-10-01), Martin
patent: 4306836 (1981-12-01), Mayerjak
patent: 4323332 (1982-04-01), Fradenburgh
patent: 4352632 (1982-10-01), Schwarz
patent: 4361415 (1982-11-01), Aubry
patent: 4580945 (1986-04-01), Miller

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