Patent Number: 6,293,085

Title: Shaft decouple logic for gas turbine engine

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.

Inventors: Thompson; Andrew Hayes (Longueull, CA), Lisio; Carmine (Montreal North, CA), Nobre; Antonio Hernani (Brossard, CA)

Assignee: Pratt & Whitney Canada Corp.

International Classification: F01D 21/00 (20060101); F01D 21/04 (20060101); F01D 21/06 (20060101); F02C 9/00 (20060101); F02C 9/46 (20060101); F02C 009/28 ()

Expiration Date: 09/25/2018