Droop stop for fully articulated rotor

Details Droop stop for fully articulated rotor Droop stop for fully articulated rotor

1980-08-07

1983-01-11

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Including movement limit stop or damping means

416134A, B64C 2740

Patent

active

043680062

ABSTRACT:
An improved droop stop for a fully articulated helicopter rotor is provided herein curved mating surfaces are employed between the spindle pad and the centrifugal droop stop static support arm to provide surface rather than line contact therebetween during centrifugal operation. The centers of the curved surfaces are coincident at the pivot point of the droop stop centrifugal arm to force the downward load of the blade to pass through this pivot point.

REFERENCES:
patent: 2151215 (1939-03-01), Larsen
patent: 2614640 (1952-10-01), Buirid
patent: 2628686 (1953-02-01), Buirid
patent: 2928478 (1960-03-01), DuPont
patent: 3533713 (1970-10-01), Salmun
patent: 3778189 (1973-12-01), Ferris
patent: 3853426 (1974-12-01), Rybicki
patent: 3932059 (1976-01-01), Rybicki
patent: 4131391 (1978-12-01), Robinson
patent: 4203708 (1980-05-01), Rybicki

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