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Combustion chamber for controlling detonation initiation position in oblique detonation engine

A combustion chamber and detonation technology, applied in the field of combustion chambers, can solve the problems of unfavorable stable detonation and so on

Inactive Publication Date: 2019-01-04
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the wall structure of the traditional combustion chamber adopts a smooth or flat structure, which is very unfavorable for stable detonation

Method used

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  • Combustion chamber for controlling detonation initiation position in oblique detonation engine
  • Combustion chamber for controlling detonation initiation position in oblique detonation engine
  • Combustion chamber for controlling detonation initiation position in oblique detonation engine

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Embodiment Construction

[0015] A combustion chamber for controlling the initiation position of the internal detonation in oblique detonation. The combustion chamber is applied to an oblique detonation engine. The wall of the combustion chamber is provided with slope steps extending outward along the circumference. The front side of the step is an induced wall surface and the rear The side is a detonation stable wall, and the slope slides along the plane where the wall of the combustion chamber is located. figure 1 The left side of the middle step is the front side of the step.

[0016] The included angle between the induced wall and the step, and the included angle between the step and the detonation stable wall are determined according to the overall design of the actual engine.

[0017] The length of the induced wall and the length of the step are determined according to the overall design of the actual engine.

[0018] The way the steps slide along the detonation stable wall is determined by the ...

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Abstract

The invention provides a combustion chamber for controlling the detonation initiation position in an oblique detonation engine. The combustion chamber is applied to the oblique detonation engine. Thewall face of the combustion chamber is circumferentially provided with a slope extending towards the outer side. The front side of a step is an induction wall face, and the rear side is a detonation stable wall face. By usage of the combustion chamber wall face structure, detonation is stabilized at the specific position, and the purpose of controlling the engine thrust can be achieved.

Description

technical field [0001] The invention relates to a combustion chamber technology, in particular to a combustion chamber for controlling the initiation position of an internal detonation in oblique detonation. Background technique [0002] The oblique detonation engine is the most promising engine for hypersonic vehicles to reach more than 7 times the speed of sound (Y. Zhang, J. Gong, T. Wang, Numerical study on initiation of oblique detonations in hydrogen-air mixtures with various equivalence ratios, Aerospace Science Technology 49 ( 2016) 130-134). As hypersonic vehicles become more and more miniaturized, it is imminent to develop small engines for hypersonic vehicles. The detonation initiation position has received extensive attention as a key factor affecting combustion characteristics. However, the current research on combustion control in the engine mainly focuses on the air-fuel ratio of the intake port and the angle change of the combustion chamber wall. Moreover,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/00F02K7/00F02C7/04
CPCF02C7/04F02K7/00F23R3/002
Inventor 秦琼瑶张小兵
Owner NANJING UNIV OF SCI & TECH
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