Low vibration helicopter rotor

Details Low vibration helicopter rotor Low vibration helicopter rotor

1985-09-30

1987-07-21

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

416140, 416141, B64C 2743

Patent

active

046815112

ABSTRACT:
A low vibration helicopter rotor including a four-bar linkage arrangement which permits the straight line connecting the center of gravity of each pair of diametrically opposed rotor blades to intersect the rotor hub geometrical center at all cyclic conditions.

REFERENCES:
patent: 2465703 (1949-03-01), Allen
patent: 2531598 (1950-11-01), Avery
patent: 2670051 (1954-02-01), Hohenemser
patent: 2672202 (1954-03-01), Pullin et al.
patent: 2686570 (1954-08-01), Haig
patent: 2754915 (1956-07-01), Echeverria
patent: 2946390 (1960-07-01), Pozgay
patent: 3623682 (1971-11-01), Kretz
patent: 4131391 (1978-12-01), Robinson
patent: 4569629 (1986-02-01), Ferris et al.

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