Device for assisting a solid propellant propulsion system of a single-engine helicopter, single-engine helicopter comprising such a device

The invention concerns a device for assisting a propulsion system of a single-engine helicopter comprising an engine linked to a power transmission unit (15) suitable for rotating a rotor of the helicopter, characterised in that it comprises: a turbine (18) for driving the rotation of an output shaft (34) linked mechanically to said power transmission unit (15); and controlled means (16) for supplying said turbine (18) with pressurised fluid in order to allow said turbine (18) to convert the energy from said pressurised fluid into mechanical energy for rotating said output shaft (34). 本发明涉及用于辅助单引擎直升机的推进系统的装置，该单引擎直升机包括被连接到动力传输齿轮箱(15)的发动机，该动力传输齿轮箱适于使直升机的旋翼旋转，其特征在于，该装置包括：用于驱动被机械连接到所述动力传输齿轮箱(15)的输出轴(34)旋转的涡轮(18)；以及用于为所述驱动涡轮(18)供给加压流体以允许所述涡轮(18)将来自所述加压流体的能量转换成用于旋转所述输出轴(34)的机械能量的控制构件(16)。