ASSISTANCE DEVICE FOR TRANSIENT ACCELERATION AND DECELERATION PHASES

摘要

The invention relates to a turboshaft engine (10) in particular for a helicopter, that comprises a gas generator (12) and a free turbine (14) rotatingly driven by the gas flow (F) generated by the gas generator (12). The invention is characterised in that the turboshaft engine (10) further includes a motor/generator coupled (30) to a shaft (18) of the gas generator (12) for providing an amount of additional rotational kinetic energy to the shaft (18) during an acceleration phase of the turboshaft engine (10) or for diverting an amount of rotational kinetic energy from the shaft (18) during a deceleration phase of the turboshaft engine.