Ram air turbine speed sensing ball detent over-speed...

Details Ram air turbine speed sensing ball detent over-speed... Ram air turbine speed sensing ball detent over-speed...

2007-11-20

2007-11-20

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

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

Impeller rotation speed responsive

C416S051000

Reexamination Certificate

active

11148040

ABSTRACT:
A ram air turbine (RAT) prevents release of its turbine blades due an over-speed condition by detecting an over-speed condition with a turbine hub-mounted centrifugally operated trigger mechanism and rotating the blades to a fixed coarse pitch position with a release mechanism that responds to the trigger mechanism.

REFERENCES:
patent: 2685932 (1954-08-01), Hartel
patent: 4743163 (1988-05-01), Markunas et al.
patent: 2072271 (1981-09-01), None

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