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Combustion chamber based on high-repetition-frequency laser and scramjet engine

A technology of high repetition frequency and combustion chamber, applied in the direction of combustion chamber, continuous combustion chamber, combustion method, etc., can solve the problems of limited range of flame stability, difficulty in adjusting the initial fire core position, unfavorable flame development, etc., to avoid electromagnetic interference problem, the effect of avoiding energy loss

Active Publication Date: 2018-08-24
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a combustion chamber and a scramjet engine based on a high repetition frequency laser. This invention solves the difficulty in adjusting the initial fire core position caused by the existing electrode ignition method, and the scope for achieving flame stability is relatively limited. Energy utilization Low efficiency, not conducive to the development of flames into the mainstream, not suitable for technical problems of large size engines

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  • Combustion chamber based on high-repetition-frequency laser and scramjet engine
  • Combustion chamber based on high-repetition-frequency laser and scramjet engine
  • Combustion chamber based on high-repetition-frequency laser and scramjet engine

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Embodiment Construction

[0020] The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0021] see figure 1 , the combustion chamber 3 based on the high repetition frequency laser provided by the present invention includes a cavity. The side wall of the cavity is provided with a window 6 that can only pass through the pulse laser, and a convex lens 10 and a laser 7 capable of generating high repetition frequency laser pulses are arranged outside the cavity facing the window 6 . The generated pulsed laser is focused by the convex lens 10 to induce plasma in the cavity to form an initial fire core 11 .

[0022] High-repetition-frequency laser pulses can be used as an energy source to induce plasma and shock waves. The laser 7 here can be a ...

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Abstract

The invention provides a combustion chamber based on high-repetition-frequency laser and a scramjet engine. Stable flame is realized through a method of continuous breakdown of gas in supersonic-velocity gas currents through high-repetition-frequency laser pulse, so that the problems of flowing loss and heat protection caused by a mechanical flame stabilizer are effectively prevented.

Description

technical field [0001] The invention relates to the technical field of scramjet engines, in particular to a combustion chamber and a scramjet engine based on a high repetition frequency laser. Background technique [0002] The airflow velocity in a scramjet can reach thousands of meters per second, which is much higher than the flame propagation velocity of hydrogen, ethylene, kerosene and other fuels, which makes the flame formed by ignition in a scramjet extremely easy to extinguish. Moreover, affected by factors such as uneven fuel blending, long ignition delay of hydrocarbon fuels, and high turbulent dissipation rate, it is very difficult to achieve successful ignition of the scramjet and stable flame after ignition. Generally, spark plugs, plasma torches, etc. are required. Ignition provides additional energy boost. At the same time, flame stabilizing devices such as support plates and concave cavities are also required. Among them, the concave cavity can integrate fu...

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Application Information

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IPC IPC(8): F23R3/42
CPCF23R3/42
Inventor 杨雷超王振国梁剑寒丁猛范晓樯孙明波安彬潘余李庆
Owner NAT UNIV OF DEFENSE TECH
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