Governor checkout apparatus and method

Details Governor checkout apparatus and method Governor checkout apparatus and method

1988-09-02

1989-09-26

Myracle, Jerry W.

Measuring and testing

Speed, velocity, or acceleration

With response to a nonspeed condition

244 1713, G01P 300

Patent

active

048691062

ABSTRACT:
An overspeed governor for adjusting the blade pitch of a propulsor in an unducted fan aircraft engine to prevent propulsor overspeed comprises a flyweight governor which is rotated in response to rotation of the propulsor, a governor pilot valve with a valve spool which is axially moved in response to actuation of the flyweight governor for adjusting the blade pitch of the propulsor, and a governor checkout apparatus which sensitizes the flyweight governor so that it is actuated to maintain a substantially lower propulsor rotative speed during a start-up operation of the engine as compared with during normal operation, whereby the operation of the governor can be checked out during start-up operation of the aircraft engine.

REFERENCES:
patent: 2160553 (1939-05-01), Martinotti
patent: 3176672 (1965-04-01), Rowe et al.
patent: 3370600 (1968-02-01), Peterson
patent: 3831615 (1974-08-01), Hartzell
patent: 3945199 (1976-03-01), Bradley et al.
patent: 3955424 (1976-05-01), Williams
patent: 4123942 (1978-11-01), Rumyantsev
patent: 4164235 (1979-08-01), Benson

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