Main helicopter rotor

Details Main helicopter rotor Main helicopter rotor

1991-04-05

1992-11-24

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

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

Nonmetallic resilient mounting

416140, 416141, 416244R, 416500, B63H 106

Patent

active

051658534

ABSTRACT:
A main helicopter rotor has a number of blades and drive shaft that supports, at its top end, a hub defined by a rocking toroidal body, the inner and outer edges of which are connected to the drive shaft via respective spherical elastomeric joints having a common center on the axis of the drive shaft. The toroidal body is fitted with and supports a rigid tubular body substantially coaxial with the drive shaft. Each blade is connected to the hub by a connecting element extending through both the tubular body and the toroidal body and connected respectively to the same by a first and second elastomeric bearing.

REFERENCES:
patent: 3700352 (1972-10-01), Gorndt
patent: 4203709 (1980-05-01), Watson
patent: 4281966 (1981-08-01), Duret et al.
patent: 4297078 (1981-10-01), Martin
patent: 4306836 (1981-12-01), Materjak
patent: 4323332 (1982-04-01), Fradenburgh
patent: 4352632 (1982-10-01), Schwarz et al.
patent: 4361415 (1982-11-01), Aubry
patent: 4566856 (1986-01-01), Miller

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