Hybrid electric propulsion systems are described. The systems include a gas turbine engine having a low speed spool and a high speed spool. The low speed spool includes a low pressure compressor and a low pressure turbine and the high speed spool includes a high pressure compressor and a high pressure turbine. An electric machine is configured to augment rotational power of at least one of the high speed spool and the low speed spool. A controller is configured to control the electric machine to one of add or subtract rotational energy to or from at least one of the high speed spool and the low speed spool during a transition to or from an idle state of operation of the gas turbine engine.
HYBRID ELECTRIC IDLE TRANSITION FOR AIRCRAFT
2022-12-15
Patent
Elektronische Ressource
Englisch
METHOD FOR CONTROLLING IDLE CHARGING OF HYBRID ELECTRIC VEHICLE
Europäisches Patentamt | 2016
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