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US 8,813,474 B2Granted
Pulsed detonation engine
AssigneeMbda France
InventorsEmeric Daniau, François Falempin, Etienne Bobo, Jean-Pierre Minard
Life of this patent
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Abstract
An engine including a means for supplying fuel to the combustion chamber of the fire tube, that includes a variable-volume transfer chamber for receiving fuel, a fuel transfer means from the tank of the engine towards the transfer chamber, and injection means for injecting fuel into the combustion chamber from the transfer chamber. The engine further includes an elastic return at least partially defined by the fuel contained in the transfer chamber.
Claims15
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.
9 more elements
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 fuel 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 comprises fuel contained in said transfer chamber;
- wherein at least one intake port being arranged in the side wall of said flame tube:
- said mobile transversal bottom, sliding between the first limit position and the second limit position, has the shape of a piston with a transversal wall oriented to said pulsed detonation combustion chamber and a side skirt cooperating with the side wall of said flame tube;
- and
- wherein a ring is integral with the transversal wall of said piston and cooperates with the side wall of said flame tube so as to plug said intake port in the second limit position of said mobile transversal bottom.
12 more elements
Dependencies are inferred from the claim text.