Method and apparatus for assessing gas turbine acceleration capability

A method for monitoring performance of a gas turbine engine includes, during acceleration of an engine, accumulating regulator indices from an engine controller and times accumulated on acceleration regulators. At least one engine sensor value is also monitored after reaching a steady state takeoff...

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Bibliographische Detailangaben
Hauptverfasser:	BENNETT GEORGE W, ASHBY MALCOLM J
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING CALCULATING COMBUSTION ENGINES COMPUTING CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS COUNTING ELECTRIC DIGITAL DATA PROCESSING GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MECHANICAL ENGINEERING PHYSICS WEAPONS
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Beschreibung
Zusammenfassung:	A method for monitoring performance of a gas turbine engine includes, during acceleration of an engine, accumulating regulator indices from an engine controller and times accumulated on acceleration regulators. At least one engine sensor value is also monitored after reaching a steady state takeoff power. The regulator indices, accumulated times, and the one or more monitored engine sensor values are used in a regression equation to normalize current engine regulator usage to a reference condition. The method further includes comparing the normalized current engine regulator usage to a historical value of engine regulator usage derived from prior takeoff data, and utilizing results of the comparison to indicate whether to perform proactive maintenance on the engine.