System and method for controlling a single-spool turboshaft engine
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United States of America Patent
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Oct 13, 2015
Grant Date -
Jul 30, 2015
app pub date -
Apr 3, 2015
filing date -
Feb 23, 2010
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Abstract
A control schedule incorporating a relationship between corrected torque and inlet pressure is selected or determined responsive to a power-level command representative of a level of power to be transmitted to a controllable load by a single-spool turboshaft engine. At least a substantial portion of the control schedule provides for a flat-rated power level by the single-spool turboshaft engine substantially independent of associated inlet air pressure and inlet air temperature, and for at least one selectable mode of operation, the control schedule provides for minimizing or nearly minimizing a measure of fuel consumption, and for at least one other selectable mode of operation, the control schedule provides for operation at a substantially fixed level of rotational speed.
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