Constant speed pump system for engine ECS loss elimination
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United States of America Patent
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Oct 20, 2015
Grant Date -
Sep 19, 2013
app pub date -
Mar 14, 2012
filing date -
Mar 14, 2012
priority date (Note) -
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Abstract
A gas turbine engine comprises a fan configured to produce propulsive thrust from a fan discharge air stream. A bypass duct is located between a cowl and an engine core, the bypass duct is fluidly coupled to the fan. An impeller pump has an intake manifold fluidly coupled to the bypass duct. The impeller pump has an outlet coupled to an outlet duct fluidly coupled to an environmental control system, wherein the impeller pump is configured to raise pressure of the fan discharge air stream and pump the fan discharge air into the environmental control system for cooling. An integrated drive pump is connected to the impeller pump for driving the impeller pump at a constant speed. The integrated drive pump is positioned on the engine core.
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