Shaft decouple logic for gas turbine engine
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United States of America Patent
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Sep 25, 2001
Issued Date -
N/A
app pub date -
Nov 29, 2000
filing date -
Jun 5, 1998
priority date (Note) -
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Abstract
The present invention is addressed to a control logic for determining the occurrence of shaft decoupling in a gas turbine engine. The control logic in the preferred embodiment receives inputs for shaft rotational speed and/or compressor pressure and uses these parameters for making a determination of shaft decoupling in fractions of a second, before serious damage to the gas turbine engine can occur. The control logic also utilizes multiple interval sampling, and sampling over multiple channels to verify any determination of shaft decoupling. Once a shaft decouple has been verified, fuel flow to the engine is cut off, thus shutting down the engine.
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