A pulse detonation engine with side intake

Abstract

The invention discloses a pulse detonation engine with air entering from the side portion. The pulse detonation engine is at least composed of a head cone, a thrust wall, a detonation chamber, a blasting chamber, lateral air-inlet valves, main fuel spray nozzles, blasting fuel spray nozzles, igniters and a tail spray pipe. The thrust wall is arranged behind the head cone, and the blasting chamber is arranged behind the detonation chamber and shares the same space with the tail spray pipe; the blasting chamber comprises an energy collection cone and a movable baffle plate; the lateral air inlet valves are distributed on the pipe walls of the detonation chamber and the blasting chamber in the axial direction; the main fuel spray nozzles and the blasting fuel spray nozzles are distributed on the inner walls of the detonation chamber and the blasting chamber in the axial direction respectively; when the engine works, the multiple main fuel spray nozzles spray atomized fuel into the detonation chamber, the blasting fuel spray nozzles spray gasified blasting fuel into the blasting chamber, the igniters ignite to detonate a fuel mixture in the blasting chamber and then a mist-shaped mixture in the detonation chamber is detonated; and in the detonation cycle of the engine, the multiple lateral air inlet valves can achieve inlet air filling and mixing with the fuel rapidly, and detonation frequency and thrust of the engine are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to a pulse detonation engine with side air intake. 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 ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the disadvantages of the traditional pulse detonation engine axial air intake method, such as complex inlet structure, long intake time, poor mixing effect, low knocking frequency, etc., to provide a multi-point The side intake pulse detonation engine with simultaneous intake can significantly shorten the intake time, significantly increase the knock frequency, and thus greatly increase the engine thrust

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