HYBRID GAS TURBOFAN POWERED SUB-IDLE DESCENT MODE
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United States of America
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Feb 20, 2020
app pub date -
Jun 4, 2019
filing date -
Jun 4, 2019
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Abstract
A method of operating an aircraft hybrid gas turbofan during an idle mode of operation includes reducing a fuel flow to a primary gas turbine engine and boosting a high spool of the primary gas turbine engine using a secondary gas turbine engine via a first power linkage connecting the primary and secondary gas turbine engines, such that a net fuel reduction is achieved. The net fuel reduction accounts for fuel flow to the primary gas turbine engine and fuel flow to the secondary gas turbine engine.
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