Measuring and testing – Rotor unbalance – Propeller – impeller – or fluid coupling
Patent
1982-12-06
1985-07-30
Gill, James J.
Measuring and testing
Rotor unbalance
Propeller, impeller, or fluid coupling
G01M 128, G01B 1126
Patent
active
045314080
ABSTRACT:
The invention concerns method and apparatus to obtain accurate tracking of rotor blades, as for example helicopter rotor blades, despite the existence of conditions transiently altering rotor angular velocity.
REFERENCES:
patent: 2964849 (1960-12-01), Roccati
patent: 3802273 (1974-04-01), Helmuth et al.
patent: 3945256 (1976-03-01), Wilson et al.
patent: 4053123 (1977-10-01), Chadwick
patent: 4112774 (1978-09-01), Chadwick
Chadwick James R.
Johnson Lloyd N.
Chadwick-Helmuth Company, Inc.
Gill James J.
Haefliger William W.
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