Activation sensing

Details Activation sensing Activation sensing

2007-09-05

2010-11-30

La, Anh V (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S626000, C137S552000, C137S557000

Reexamination Certificate

active

07843354

ABSTRACT:
A determination of bleed valve activation in a gas turbine engine can be difficult unless the engine is maintained at a steady idle state for comparison between that state and effects of activation of the bleed valve. Furthermore, specific test activation of bleed valves increases wear and tear on those valves. By sensing a flow pressure response signal and then through appropriate averaging and processing through a non-linear filter, it is possible to identify bleed valve activation by a target signal response exceeding a threshold indicative of such bleed valve activation.

REFERENCES:
patent: 5687082 (1997-11-01), Rizzoni
patent: 6564825 (2003-05-01), Lowery et al.
patent: 6973375 (2005-12-01), Brodeur et al.
patent: 7025088 (2006-04-01), Saunders
patent: 7055310 (2006-06-01), Hashimoto

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