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1. (WO2018089057) GAS TURBINE ENGINE INSTALLED MONITORING AND CONTROL TO PREVENT STANDING WAVE DYNAMIC RESONANCE

Pub. No.:    WO/2018/089057    International Application No.:    PCT/US2017/042019
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Fri Jul 14 01:59:59 CEST 2017
IPC: F02C 9/18
F01D 25/04
F01D 21/00
F02K 3/04
Applicants: ELECTROMAGACCOSTICENERGY (EMAE) LLC
Inventors: GRAHAM, Edward
Title: GAS TURBINE ENGINE INSTALLED MONITORING AND CONTROL TO PREVENT STANDING WAVE DYNAMIC RESONANCE
Abstract:
A method of preventing standing waves in an installed gas turbine having a fan, having a fan speed, and a compressor, having a compressor speed, includes correcting the fan and compressor speeds for temperature and monitoring the corrected speeds to prevent them from converging, or becoming the same value. In addition, a computer implemented monitoring and adjusting program may monitor a position of an aircraft on a ACTFS plot and make adjustments to avoid intercepting a surge line by changing the speed of the plane, one or both of the fan or compressor speeds or by changing altitude. An aircraft may form a standing wave when crossing or operating on a surge line of an ACTFS plot and this condition should be avoided which may require high data rate monitoring and control logic.