A double or triple element continuous rotary detonation engine

Abstract

The invention discloses a double or three-component continuous rotation detonation engine, which comprises an injection panel, a combustion chamber shell and an inner injector; the inner injector is inserted coaxially at the front end of the combustion chamber shell; The inner cavity of the combustion chamber casing downstream of the injector is formed as a combustion chamber; an annular oxidant injection channel is formed between the inner injector and the front end of the combustion chamber casing; the center of the inner injector is provided with a fuel-collecting chamber , the outer wall of the inner injector facing the combustion chamber is provided with an outer convex ring, the outer convex ring can make the oxidant injection channel form a contracted and expanded section structure; the inner injector side wall located downstream of the outer convex ring A number of first fuel injection holes are evenly distributed; a number of fuel second injection holes are evenly arranged along the circumference of the combustion chamber shell front end. According to the present invention, one of the channels can be closed to form a two-component injection mode. It has a good mixing effect while realizing double / three-component continuous rotating detonation, ensuring smooth combustion.

Description

technical field [0001] The invention relates to the technical field of space propulsion, in particular to a double or triple component continuous rotation detonation engine. Background technique [0002] With the development of the aerospace industry, rocket engines with high thrust and high combustion efficiency are constantly emerging, but the high-frequency unstable combustion problem caused by this has become one of the key technologies in the development. High-frequency unstable combustion is extremely destructive. When high-frequency unstable combustion occurs, the heat transfer rate in the local area of ​​the combustion chamber will increase several times, causing serious ablation of the injector and wall, and even can be eliminated in less than Burn through and burn the entire engine within 1s. Therefore, it is of far-reaching practical value to study the mechanism of unstable combustion in depth and seek a solution to unstable combustion. [0003] In addition, the...

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