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Shock wave focusing detonation combustion chamber based on multi-zone ignition

A technology of shock wave focusing and combustion chamber, which is applied to rocket engine devices, jet propulsion devices, machines/engines, etc., and can solve difficult-to-achieve and high-energy problems

Inactive Publication Date: 2021-01-08
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the high energy required for the direct detonation of most hydrocarbon fuel and air mixtures, it is difficult to achieve direct detonation through high-energy ignition

Method used

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  • Shock wave focusing detonation combustion chamber based on multi-zone ignition
  • Shock wave focusing detonation combustion chamber based on multi-zone ignition
  • Shock wave focusing detonation combustion chamber based on multi-zone ignition

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0021] like figure 1 and image 3 As shown, the shock-focused detonation combustion chamber based on multi-zone ignition according to the present invention includes an air inlet 1, an igniter 2, a fuel nozzle 3, a pre-combustion chamber 4, a shock-wave focusing sphere 5, a detonation section 6, The main detonation combustion chamber 7, the sudden change in section 8 and the rotary valve 9. One end of the detonation section 6 is provided with a shock wave focusing sphere 5, and a number of pre-combustion chambers are evenly distributed on the outside of the detonation section 6, and the outlet of the pre-combustion chamber faces the tangential direction of the shock wave focusing sphere 5 for making The hot jet that each pre-combustion chamber produces is focused in the ...

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Abstract

The invention provides a shock wave focusing detonation combustion chamber based on multi-zone ignition. The shock wave focusing detonation combustion chamber comprises a shock wave focusing sphericalsurface, a detonation section and a main detonation combustion chamber body. The shock wave focusing spherical surface is arranged at one end of the detonation section, several pre-combustion chambers are evenly distributed on the outer side of the detonation section, and outlets of the pre-combustion chambers face a tangential direction of the shock wave focusing spherical surface and are used for enabling a thermal jet generated by each pre-combustion chamber to be focused in the detonation section through the shock wave focusing spherical surface. An igniter and a fuel nozzle are mounted on each pre-combustion chamber, and the other end of the detonation section communicates with the main detonation combustion chamber. According to the method for promoting detonation through multi-zoneignition, thermal jet shock wave focusing and obstacle turbulence, DDT time and distance are shortened, the working frequency of an engine is improved, and then the performance of the engine is improved.

Description

technical field [0001] The invention relates to the field of detonation combustion, in particular to a shock wave focusing detonation combustion chamber based on multi-zone ignition. Background technique [0002] With the development of aerospace technology, the development of high-performance aerospace propulsion system has become an important research goal of the world's scientific and technological powers. The so-called high performance, in addition to good speed and height characteristics, high thrust-to-weight ratio, low fuel consumption and good economy in the traditional sense, should also have a wide range of work, that is, the engine can run on the ground It can generate thrust, and can work at high altitudes, even outside the atmosphere. It can fly at subsonic and transonic speeds, and can fly at supersonic and hypersonic speeds. To achieve these performance requirements, a pulse detonation engine (Pulse Detonation Engine, referred to as PDE) is an ideal first cho...

Claims

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Application Information

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IPC IPC(8): F02K9/62
CPCF02K9/62
Inventor 石星宇潘剑锋潘振华陈颖
Owner JIANGSU UNIV
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