Measuring and testing – Test stand – For engine
Patent
1985-10-16
1987-03-24
Tokar, Michael J.
Measuring and testing
Test stand
For engine
364551, G01M 1500
Patent
active
046515631
ABSTRACT:
An apparatus for detecting jet engine failures during aircraft flight. Low and high speed rotor rotation velocities of one engine are compared with low and high rotor rotation velocities of other engines and the difference between them utilized to determine engine failure. Equivalent low speed rotor velocity of an engine is computed from the high speed rotor velocity of that signal. This computed value is compared with measured low speed rotor velocity of the same and of different engines. Differences between the computed values and the actual values are compared to a computed threshold, which allows for normal differences between engines, to determine the operational state of the engine. Additional engine testing is performed by comparing low speed rotor rotational velocity to a computer windmilling value for each engine.
REFERENCES:
patent: 3238768 (1966-03-01), Richardson
patent: 3731070 (1973-05-01), Urban
patent: 3867717 (1975-02-01), Moehring et al.
patent: 4158884 (1979-06-01), McKinley et al.
patent: 4215412 (1980-07-01), Bernier et al.
Levine Seymour
Raevis Robert R.
Sperry Corporation
Terry Howard P.
Tokar Michael J.
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