| 主权项 |
1. A method for starting up an aircraft turbomachine with the aid of a start-up system comprising at least:
one ventilation source able to produce a flow of air and provided with a compressor fed by an air intake circuit regulated by at least one inlet valve, said inlet valve being able to be controlled; and at least one start-up turbine fed by said ventilation source via a pneumatic connection, said start-up turbine being able to produce, when subjected to a flow of air, a mechanical force making it possible to turn a rotor of the turbomachine for the purpose of the start-up, wherein said method comprises at least two successive steps: a first step, during which said inlet valve is open partially, such that the ventilation source transmits a limited flow of air to said start-up turbine, this limited flow of air being such that said start-up turbine turns said rotor at a speed of rotation that is lower than a critical speed; and a second step, during which said inlet valve is completely open, such that the ventilation source transmits a maximum flow of air to said start-up turbine. |
