A rotating detonation combustor with unidirectional propagation of detonation waves

Abstract

The invention discloses a rotary detonation combustion chamber enabling detonation waves to be transmitted in one direction. The rotary detonation combustion chamber comprises a combustion chamber outer ring, a combustion chamber inner ring, a mounting base and an igniter; the combustion chamber inner ring and the combustion chamber outer ring are coaxial; the outer wall surface of the inner ringof the combustion chamber is a cylindrical surface; the inner wall surface of the outer ring of the combustion chamber is a periodic gradual-shrinkage and convex-protruding type surface, the curvatureradius of the inner wall surface of the tapered section is gradually reduced, and a step surface is formed between the sudden expansion section and the next cycle type surface; the mounting seat is arranged at the start position of the tapered section along the outer ring of the combustion chamber; and the igniter is arranged on the mounting seat. According to the rotary detonation combustion chamber enabling detonation waves to be transmitted in one direction, the combustion chamber, the inner wall surface of the outer ring of the combustion chamber can inhibit the generation of a reverse detonation wave in the detonation phase of the rotary detonation wave, and the propagation of the reverse detonation wave is effectively prevented in the rotating detonation wave propagation stage.

Description

technical field [0001] The invention belongs to the technical field of aerospace power, in particular to a rotary detonation combustion chamber for unidirectional propagation of detonation waves. Background technique [0002] Traditional aerospace engines are mostly based on deflagration and combustion to generate power. After decades of development, these engines are close to maturity, and it is difficult to greatly improve their performance. The development of new engine technologies with higher efficiency has become an inevitable trend in the propulsion field. The detonation wave is a supersonic combustion wave whose thermodynamic state increases sharply after expanding through the reaction surface. It can be regarded as a strong shock wave with chemical reaction. Compared with the deflagration wave, it has the advantages of fast energy release, small entropy increase, and high thermal cycle efficiency. The rotary detonation engine based on detonation combustion has the a...

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Problems solved by technology

[0004] The object of the present invention is to provide a rotary detonation combustion chamber that allows the detonation wave to propagate in one direction, so as to solve the problem that the propagation direction of the detonation wave in the existing rotary detonation combustion chamber is uncontrollable

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