Method of starting a gas turbine helicopter engine, fuel supply circuit for such an engine, and engine having such a circuit

摘要

The method involves directly supplying fuel to a main starting injector (40a) of a set of main injectors (40) by a pressurized supply pipe (32), while imposing a pressure drop between the pipe and other main injectors. Ignition is provoked at the level of the main starting injector. The pressure drop is eliminated after the ignition such that all main injectors are supplied with fuel under same fuel pressure without any pressure drop. An independent claim is also included for a fuel supply circuit for a combustion chamber of a gas turbine helicopter engine.