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NONINTRUSIVE PERFORMANCE MEASUREMENT OF A GAS TURBINE ENGINE IN REAL TIME

United States Patent Application

20150260557
A1
View the Complete Application at the US Patent & Trademark Office
Performance of a gas turbine engine is monitored by computing a mass flow rate through the engine. Acoustic time-of-flight measurements are taken between acoustic transmitters and receivers in the flow path of the engine. The measurements are processed to determine average speeds of sound and gas flow velocities along those lines-of-sound. A volumetric flow rate in the flow path is computed using the gas flow velocities together with a representation of the flow path geometry. A gas density in the flow path is computed using the speeds of sound and a measured static pressure. The mass flow rate is calculated from the gas density and the volumetric flow rate.
DeSilva, Upul P. (Oviedo, FL), Claussen, Heiko (North Brunswick, NJ)
14/ 341,950
July 28, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0010] Temperature mapping portions of this invention were made with government support under contract DE-FC26-05NT42644 awarded by the U.S. Department of Energy. The government may have certain rights in the invention.