TURBOCHARGED GAS TURBINE ENGINE WITH ELECTRIC POWER GENERATION FOR SMALL AIRCRAFT ELECTRIC PROPULSION
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United States of America
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Issued Date -
Jan 2, 2020
app pub date -
Jan 29, 2018
filing date -
Jan 29, 2018
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Abstract
A turbocharged gas turbine engine with an electric generator to provide electrical power for an aircraft (e.g., UAV) with multiple propulsor fans each driven by an electric motor, where the engine includes a low spool that drives a main fan and a high spool that drives a high speed electric generator. The low pressure compressor supplies low pressure air to an inlet of the high pressure compressor. A row of stator vanes in the high pressure turbine is cooled using cooling air bled off from the low pressure compressor outlet that is passed through an intercooler and a boost compressor, where the spent vane cooling air is discharged into the combustor. The low pressure turbine and the two compressors each include a variable inlet guide vane to control the power level of the engine. Bypass flow from the main fan is used to cool hot parts of the engine.
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