Scramjet engine and its combustion chamber based on high repetition rate laser

A scramjet, high repetition frequency technology, applied in combustion chambers, continuous combustion chambers, combustion methods, etc., can solve the problem of small flame stabilization range, inability to effectively stabilize large-area flames, and the ability of the fire core to resist turbulent dissipation. To avoid energy loss, avoid electromagnetic interference problems, and promote development

Active Publication Date: 2020-04-14
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] The object of the present invention is to provide a scramjet engine and its combustion chamber based on a high repetition frequency laser, which solves the problem that the range of flame stability caused by the existing electrode ignition method is small, and cannot be effectively used for large-scale engines. To stabilize a large area of ​​flame, the technical problem of the fire core's ability to resist turbulent dissipation is relatively poor

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  • Scramjet engine and its combustion chamber based on high repetition rate laser
  • Scramjet engine and its combustion chamber based on high repetition rate laser
  • Scramjet engine and its combustion chamber based on high repetition rate laser

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[0021] 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.

[0022] 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 .

[0023] 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 high repetition frequency laser-based scramjet engine and a combustion chamber thereof. 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...

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Application Information

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Patent Type & Authority Patents(China)
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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