AIRCRAFT POWER PLANT WITH DETONATION COMBUSTION TUBE

An aircraft power plant (1), has: a combustion engine (2) having an outlet outputting combustion gases; a turbine (5) downstream of the combustion engine; a detonation combustion tube (8) fluidly connecting the combustion engine (2) to the turbine (5); a member having an open position in which the outlet of the combustion engine (2) is fluidly connected to the turbine (5) and a closed position in which the combustion engine (2) is fluidly disconnected from the turbine (5); a fuel injector fluidly connected to the detonation combustion tube (8); an igniter operatively connected to the detonation combustion tube (8); and a controller operatively connected to the fuel injector and to the igniter, the controller configured to, in response to receiving of a command: inject fuel into the detonation combustion tube (8) via the fuel injector, and once the member is in the closed position, power the igniter to ignite a mixture of the combustion gases and the fuel into the detonation combustion tube (8).