Main helicopter rotor

Details Main helicopter rotor Main helicopter rotor

1991-04-05

1992-08-04

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

051353571

ABSTRACT:
A main helicopter rotor having a number of blades and wherein a drive shaft supports, at its top end, an annular hub integral with the drive shaft and in turn supporting, via a spherical elastomeric joint having its center on the axis of the drive shaft, and an elastic axial suspension, a toroidal body surrounding the drive shaft. Each blade is connected to the hub by a connecting element extending through both the hub and the toroidal body, and connected respectively to the same by a first and second spherical elastomeric bearing.

REFERENCES:
patent: 2233747 (1941-03-01), Riedl
patent: 4251187 (1981-02-01), Hollrock
patent: 4297078 (1981-10-01), Martin
patent: 4306836 (1981-12-01), Mayerjak
patent: 4323332 (1982-04-01), Fradenburgh
patent: 4361415 (1982-11-01), Aubry
patent: 4580945 (1986-04-01), Miller
patent: 4915585 (1990-04-01), Guimbal

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