Apparatus and method for rotating fluid controlling vanes in small turbine engines and other applications
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United States of America Patent
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Jul 19, 2016
Grant Date -
Sep 25, 2014
app pub date -
Jan 24, 2013
filing date -
Jan 24, 2012
priority date (Note) -
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Abstract
Actuation systems and methods for varying the angle of small turbine engine inlet guide vanes (IGV) and/or compressor stator vanes (CSV). Such systems and methods may employ a piezoelectric inchworm actuator (or a piezo stack actuator or magnetostrictive actuator, depending upon actuation requirements) to actively modify the angle of attack of a single or a cascade of inlet guide vanes or compressor stator vanes. The change in angle of attack is necessary due to large variations in engine operating envelope including but not limited to air density, velocity, temperature, and the like. The present invention is especially suitable to actuate small inlet guide vanes and compressor stator vanes found in small turbine jet engines including but not limited to those under ten (10) inches in diameter.
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