Patent ID: 8850794

Claim:
A pulse detonation engine operating with a detonating fuel-air mixture and comprising: at least one flame tube with a transversal bottom being mobile with respect to the transversal bottom so as to be able to occupy two limit positions, a first position corresponding to detonation phase of the detonating fuel-air mixture in a combustion chamber of said at least one flame tube and a second position corresponding a supply phase of said combustion chamber; at least one intake port of the detonating mixture arranged in a side wall of said at least one flame tube; wherein: said pulse detonation engine comprises an external shell around said flame tube defining a peripheral ring space along the side wall of said flame tube allowing an air flux to flow from an air intake of said pulse detonation engine; fixed flowing guides are arranged in the peripheral ring space to define flowing channels; and at least one mobile block arranged in the peripheral ring space and connected to a mobile bottom, is provided for moving along the side wall of said at least one flame tube, said mobile block being able to obstruct, when said mobile bottom occupies the second position, at least one of said flowing channels so as to orient part of the air flow in the direction of said at least on intake port and release said at least one of said flowing channels when said mobile bottom is in the first position.