Abstract: A pulse-action detonation combustion chamber enables the speed-, temperature- and pressure-modulated flow of the combustion products at a peak temperature of up to 4000.degree.C, pressure up to 30 atm and speed up to 1000 m/s with a repetition frequency of impulses of up to 100 c/s. The combustion chamber comprises a combustion chamber proper is in the form of a tube closed at one end, manifolds are provided for the supply of fuel, oxidizer and a non-combustible material respectively, an ignition arrangement and means for cooling the fuel and oxidizer supply manifolds. The chamber can be filled with fuel in an amount sufficient to develop detonation due to the measures preventing the fuel from being prematurely ignited. Such premature ignition may take place because of the contact of the fresh fuel with the hot combustion products expelled by such fuel.