Pulse detonation bypass engine propulsion pod
AssigneeAllison Advanced Development Company
InventorsVon David Baker, Bernie Joseph Rezy
Life of this patent
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Abstract
A propulsion pod for a twin tube, rotary inlet valve, pulse detonation engine includes a shared, two-dimensional, low aspect ratio wedge nozzle in which each side of the wedge is transitioned into the discharge end of the detonation tubes of the engine. The nozzle design results in a quasi-separate exhaust flow path with two separate nozzle throat areas, one for each detonation tube. Actuation of the center wedge of the nozzle provides pitch vectoring of the exhaust. Actuation of flaps integrated into the side walls of the nozzle provides yaw vectoring. The detonation tubes are cooled by flowing bypass air over cooling means coupled to the detonation tubes.
Claims18
An apparatus comprising:
- a housing having an inlet adapted for receiving ram air;
- a pulse detonation engine disposed within said housing, said engine including two detonation tubes, each of said tubes having a discharge end;
- and
- a nozzle in flow communication with said discharge ends of said detonation tubes, said nozzle having an outlet with a center portion, wherein a center wedge fairing extending across said center portion.
An apparatus comprising:
- a housing;
- a pulse detonation engine having two detonation tubes disposed within said housing, each of said tubes having an end through which exhaust is discharged;
- and
- a nozzle in flow communication with said discharge ends of said detonation tubes, said nozzle having means for maintaining separate said exhaust front each of said detonation tubes.
An apparatus comprising:
- a housing;
- a pulse detonation engine disposed within said housing, said engine having a longitudinal axis and a first and a second detonation tube, each of said tubes having a firing and a filling phase and having an end through which exhaust is discharged;
- and
- a nozzle having two throats, one throat in flow communication with said discharge end of said first tube and the other throat in flow communication with said discharge end of said second tube, said nozzle further including means for inhibiting exhaust from said first tube during its firing phase from flowing into said second tube during its filling phase.
Dependencies are inferred from the claim text.