| 摘要 |
A method of starting a turboshaft engine (5) of an aircraft (1), said aircraft (1) being provided with a rotary wing, said aircraft (1) having a freewheel (15) interposed in a drive train (10) between said engine (5) and a rotor (2) of said rotary wing (1), said engine (5) comprising a gas generator (6) and a free turbine (9), the drive train (10) including an upstream portion (11) connecting said free turbine (9) to said freewheel (15), the method comprising the following steps: measuring the torque (Tq) exerted on said upstream portion (11), and measuring a speed of rotation (Ng) of said gas generator (6); comparing said torque (Tq) with a torque threshold (Stq) and comparing said speed of rotation (Ng) with a gas generator speed threshold (Sng); and stopping said engine (5) when said torque (Tq) is less than the torque threshold (Stq) and when said speed of rotation (Ng) is greater than the gas generator speed threshold (Sng). |
| 主权项 |
1. A monitor system for monitoring the starting of a rotary wing aircraft, the aircraft having a freewheel interposed in a drive train for transmitting power between a turboshaft engine and a rotor of the rotary wing, the engine comprising a gas generator and a free turbine, the drive train including an upstream portion connecting the free turbine to the freewheel, wherein the monitor system comprises a first measurement device for measuring, when mounted, the torque (Tq) exerted on the upstream portion, and a second measurement device for measuring, when mounted, a speed of rotation (Ng) of the gas generator, and a third measurement device for measuring, when mounted, a speed of rotation (Nr) of the rotor, the monitor system having a processor unit connected, when mounted, to the engine and also to the first measurement device and to the second measurement device and to the third measurement device, the processor unit being configured in such a manner that the processor unit:
compares the torque (Tq) with a torque threshold (Stq), and compares the speed of rotation (Ng) of the gas generator with a gas generator speed threshold (Sng), and compares the speed of rotation (Nr) of the rotor with a rotor threshold; and automatically stops starting of the engine when the torque (Tq) is less than a torque threshold (Stq) and when the speed of rotation (Ng) of the gas generator is greater than a gas generator speed threshold (Sng) and when the speed of rotation (Nr) of the rotor is lower than a rotor speed threshold. |
