Hot properties

Fisher, Richard
December 2004
Engineer (00137758);12/10/2004, Vol. 293 Issue 7665, p11
This article reports that the U.S. National Aeronautics and Space Administration is backing a project to discover new high-temperature piezoelectric materials that could be used to control fuel flow in gas turbines, or act as sensors in jet engines and oil drilling equipment. Piezoelectric materials (PZs) change their shape when subjected to voltage, and are often used as sensors, accelerometers and actuators. But most known PZ materials will only work below a certain temperature. A U.S. company TRS Technologies and Penn State University hope to find materials suitable for use as PZ actuators to control fuel flow in gas turbine engines, which would dramatically increase efficiency, said TRS research and development director Dr Paul Rehrig.


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