A Rotating Detonation Engine with Premixed Injection

Abstract

The invention discloses a premixed jet rotating detonation engine device. The premixed jet rotating detonation engine device is characterized in that in the gas flow direction, a premixed gas collecting cavity is located at the most front end, an oxidizer gas inlet hole and an fuel gas inlet hole are formed in the front end face and the outer wall face of the premixed gas collecting cavity correspondingly, and an oxidizer and fuel are mixed in the premixed gas collecting cavity; an gas jetting device is connected to the downstream of the premixed gas collecting cavity, a plurality of circulargas jetting holes are evenly distributed in the gas jetting device in the circumferential direction and radial direction, cooling grooves which communicate mutually in the circumferential direction and radial direction are formed in the position between the gas jetting holes, and cool liquid flows into from a liquid inlet and flows out from an liquid outlet; and an annular combustor is connected to the downstream of the gas jetting device, and premixed gas enters the annular combustor through the gas jetting holes for combustion. According to the premixed jet rotating detonation engine, by arranging the gas jetting device provided with the cooling grooves and in a certain axial direction, fire in the annular combustor can be effectively prevented from returning to the premixed gas collecting cavity, and steady working of the rotating detonation engine adopting the premixed jet mode is achieved; and compared with the non premixed jet mode, working stability and the propulsion performance of the engine are improved.

Description

technical field [0001] The invention belongs to the technical field of aerospace power, in particular to a premixed injection rotary detonation engine. Background technique [0002] Traditional aerospace engines mostly use deflagration combustion to generate propulsion power. However, with the advancement of science and technology and the development of society, the demand for more efficient propulsion systems is also increasing. Different from deflagration combustion, detonation combustion is an explosive phenomenon, which induces chemical reactions by compressing reactants on the front shock wave surface, and its flame propagation speed can reach several kilometers per second, with fast energy release speed, small entropy increase, heat High cycle efficiency and other advantages. The rotary detonation engine is a new concept engine that works on the principle of detonation. This engine has the following characteristics: it uses detonation waves to achieve self-superchargi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a rotary detonation engine with premixed injection, so as to solve the problems caused by the non-uniform mixing of oxidant and fuel in the existing rotary detonation engine which adopts the non-premixed injection mode. Unstable work, low propulsion performance, etc.

Images