A method of and system for operating a hybrid electric propulsion system (20) for an aircraft in a start sequence is provided. The hybrid electric propulsion system (20) includes a thermal engine (22), an electric motor (24), a gearbox (36), an electric power storage unit (26), and a propulsion unit (28) having a propeller (40) having propeller blades (40A). The method includes: driving the propeller (40) from a static state to a target rotational speed within a predetermined range of speeds using the electric motor (24); transitioning the propeller blades (40A) from a feathered mode to an unfeathered mode while the propeller (40) is being driven at the target rotational speed solely by the electric motor (24); starting the thermal engine (22); and transitioning the driving of the propeller (40) using the electric motor (24) to driving the propeller (40) using the thermal engine (22).
HYBRID ELECTRIC PROPULSION SYSTEM WITH START SEQUENCE AND SHUTDOWN SEQUENCE
HYBRIDES ELEKTRISCHES ANTRIEBSSYSTEM MIT STARTSEQUENZ UND ABSCHALTSEQUENZ
SYSTÈME DE PROPULSION ÉLECTRIQUE HYBRIDE AVEC SÉQUENCE DE DÉMARRAGE ET SÉQUENCE D'ARRÊT
2024-08-14
Patent
Electronic Resource
English
Hybrid Electric Propulsion System with Start Sequence and Shutdown Sequence
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