A Side Exhaust Pulse Detonation Engine

Abstract

The invention discloses a side-exhausting pulse detonation engine. The pulse detonation engine is at least composed of a head cone, a detonation pipe, lateral air inlet valves, lateral air exhaust valves, main fuel nozzles, detonation fuel nozzles and an igniter, wherein the two ends of the detonation pipe are sealed, and the detonation pipe is divided into a main detonation chamber at the front part and a blasting chamber at the rear part by a sieve plate; the blasting chamber comprises a mouse cage component; the lateral air inlet valves and the lateral air exhaust valves are alternately arranged on the pipe wall of the detonation pipe in the axial direction; the main fuel nozzles and the detonation fuel nozzles are distributed on the pipe inner wall of the detonation pipe in the axial direction; when the engine works, multiple main fuel nozzles spray atomized fuels into the main detonation chamber, at the same time the detonation fuel nozzles spray gasified detonation fuels into the blasting chamber; the igniter detonates the explosive gas mixture in the blasting chamber and then detonates the mist-shape mixture in the main detonation chamber, and generated shock waves generate main thrust on a thrust wall; the explosive gas products are ejected backwards from the multiple lateral air exhaust valves to generate further thrust; an outer duct can be additionally arranged outside the detonation pipe, so that the resistance generated in high-speed flight is reduced.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to a side-exhaust pulse detonation engine. Background technique [0002] Pulse Detonation Engine (PDE) is a new concept engine with detonation wave as the main thrust. When the engine is working, the fuel burns in the detonation chamber of the engine in a violent detonation manner, which generates High temperature and pressure (pressure can be as high as 100 atmospheres, temperature can reach 2000°C), and the detonation wave (shock wave) generated at the same time propagates at supersonic speed (kilometers per second) and acts on the thrust wall of the engine to generate thrust , when the high-temperature and high-pressure combustion products are jetted out of the engine at high speed, additional thrust is generated; because the detonation combustion is intermittent pulse combustion, the engine is an unsteady propulsion system. Compared with the traditional propulsion system, ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the defects of air flow blockage, long exhaust time and low knock frequency in the traditional pulse detonation engine tail nozzle exhaust method, and to provide a side exhaust that can exhaust at multiple points at the same time The gas pulse detonation engine can significantly shorten the exhaust time, greatly increase the detonation frequency, and thus greatly increase the engine thrust

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