Helicopter rotor structure

Details Helicopter rotor structure Helicopter rotor structure

1977-08-12

1979-05-08

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Resilient bias or mount

416141, 416134A, B64C 2738

Patent

active

041533909

ABSTRACT:
The present rotor structure for rotary wing aircraft, such as helicopters, s constructed to minimize the mass unbalance which normally occurs due to the lead-lag of the rotor blades or wings. For this purpose all the bearings supporting the rotors on the rotor heads are constructed as bearings permitting an axial movement of the tension bars which interconnect the wings of a pair of wings. In addition, the wing interconnecting bars are bending-resistant and connected with each other at their crossing point by a centering device which is freely movable in the rotor plane and relative to the rotor head. The connection of the bars by the centering device is rigid in the longitudinal, axial direction of the tension bars.

REFERENCES:
patent: 3470962 (1969-10-01), Cure
patent: 3578877 (1971-05-01), Mautz
patent: 3879153 (1975-04-01), Breuner
patent: 3880551 (1975-04-01), Kisovec
patent: 4008980 (1977-02-01), Noehren et al.

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