Helicopter rotor blade balancing method

Details Helicopter rotor blade balancing method Helicopter rotor blade balancing method

1974-12-18

1976-04-27

Powell, Jr., Everette A.

Measuring and testing

Rotor unbalance

Propeller, impeller, or fluid coupling

416 23, 416144, 416500, G01M 122

Patent

active

039526011

ABSTRACT:
A helicopter rotor blade having at least one ramp tab of selected span and chord dimensions, weight and shaped to define an outer surface of selected angularity with respect to the blade chord and being selectively positioned along the blade trailing edge and bonded to its upper or lower surface so as to be totally within the blade chord profile and be effective to eliminate or reduce to within acceptable limits blade pitching moment dynamic unbalance.

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patent: 3018832 (1962-01-01), Prewitt
patent: 3237697 (1966-03-01), Ford et al.
patent: 3524354 (1970-08-01), Frank et al.
patent: 3586267 (1971-06-01), Sundberg
patent: 3830109 (1974-08-01), Litvinovich et al.

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