Propeller brake for a turbo-prop engine

Details Propeller brake for a turbo-prop engine Propeller brake for a turbo-prop engine

1980-09-29

1983-03-15

Hornsby, Harvey C.

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Control of drive brake or clutch

416169R, 415 18, 415 61, 415123, 188 711, 192114R, 60 39163, F01D 2114

Patent

active

043766145

ABSTRACT:
A propeller brake for a twin spool turbo-prop engine which permits the propeller to be locked in a stationary position with the engine running is disclosed. The propeller brake has a hydraulically actuated friction brake and hydraulically actuated locking mechanism rotatably connected to the engine spool turning the propeller. The friction brake stops the propeller from rotating in response to an external command. A hydraulic signal indicating the propeller has stopped rotating actuates the mechanical lock holding the propeller in a stationary position. A safety latch prevents the mechanical lock from being actuated in event of a hydraulic pressure or engine failure in flight.

REFERENCES:
patent: 2141091 (1938-12-01), Quick
patent: 2737018 (1956-03-01), Bain
patent: 2981063 (1961-04-01), Wickman
patent: 3225876 (1965-12-01), Dison
patent: 3899877 (1975-08-01), Flanigan et al.

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