Patent ID: 8813474

Claim:
A pulsed detonation engine operating with a fuel-air detonating mixture and comprising: at least one flame tube with a mobile transversal bottom, so as to be able to occupy a first and a second limit position, and closed by a transversal support being opposite to said mobile transversal bottom; an elastic return acting on said mobile transversal bottom and being able to propel the mobile transversal bottom from the first limit position to the second limit position and to slow the mobile transversal bottom down at an end of travel from the second limit position to the first limit position; at least one fuel tank; and a fuel supplying assembly for supplying fuel to a pulsed detonation combustion chamber of said flame tube; wherein said fuel supplying assembly comprises: a transfer chamber being variable in volume, bounded by a side wall of said flame tube, by said mobile transversal bottom and by said transversal support and adapted to receive fuel from said fuel tank; a fuel transferring assembly being able to transfer fuel from said tank to said transfer chamber; and a fuel injecting assembly adapted to inject fuel into said pulsed detonation combustion chamber from said transfer chamber; and in that said elastic return comprise fuel contained in said transfer chamber; wherein said fuel tank being arranged at the rear of said transversal support coaxially to said flame tube, said transversal support comprises said fuel transferring assembly.