A scramjet engine based on detonation combustion

A scramjet and detonation combustion technology, applied in ramjet engines, mechanical equipment, etc., can solve the problems of not considering the application of the engine, and the conceptual design of the scramjet engine has not been reported, so as to ensure the detonation and detonation. and control functions, improve the efficiency of fuel premixing, increase the effect of fuel premixing distance and time

Active Publication Date: 2018-06-05
NAT UNIV OF DEFENSE TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Scramjet engines have gradually moved towards engineering applications, but the conceptual design of scramjet engines based on detonation combustion has not yet been reported
Using the relatively mature engineering experience of scramjet engines, using detonation combustion to replace the isobaric combustion mode in the combustion chamber, compared with other types of detonation engines, the engine based on detonation combustion can be realized as soon as possible, but these studies are still in the theoretical stage. The stage does not consider the specific engine application implementation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A scramjet engine based on detonation combustion
  • A scramjet engine based on detonation combustion
  • A scramjet engine based on detonation combustion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The invention provides a scramjet engine based on detonation combustion. In the scramjet engine based on detonation combustion, compression of supersonic air flow, fuel injection and mixing with compressed air, heat dissipation in the combustion chamber can be realized. The detonation initiation of the jet and the dynamic stability control of the detonation combustion ultimately achieve stable thrust performance. The invention is mainly designed from the intake port structure, the fuel injection structure, the detonation structure and the dynamic control structure of the combustion chamber of the engine.

[0026] refer to figure 1 , This embodiment includes an intake port 1 and a combustion chamber 2 . For the intake port, the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A scramjet engine based on detonation combustion comprises an air inlet channel and a combustion chamber. The air inlet channel of the engine is designed in a one-time linear compression mode. The upstream wall surface of the air inlet channel is provided with fuel injection holes. A detonation device is arranged behind the combustion chamber of the engine and comprises a hot jet oxidation agent pipeline and a hot jet device carrying with jet fuel. An inlet of the hot jet oxidation agent pipeline is formed in the upper stream of the air inlet channel and located above all the fuel injection holes. An outlet of the hot jet oxidation agent pipeline is connected with the hot jet device and conducts mixed ignition with the fuel carried in the hot jet device, and hot jet is generated. Compared with a traditional scramjet engine, the novel scramjet engine based on detonation combustion is simplified in structure and high in thermodynamic cycle efficiency and energy release rate, and by testing, the thrust performance of the engine based on detonation combustion can be 30% or above higher than that of an existing engine based on isobaric combustion.

Description

technical field [0001] The invention relates to a scramjet engine based on detonation combustion, and provides a design method for the realization of fuel injection mixing, thermal jet detonation of supersonic combustible gas and detonation dynamic stability control. Background technique [0002] The scramjet engine (Scramjet) has excellent performance under high Mach (Ma>5) flight conditions, and has become the preferred solution for the propulsion system of hypersonic aircraft. However, combined with the current research and the US X-51A flight test, it can be known that the acceleration performance of the scramjet demonstrator is not obvious, and the net thrust is relatively small. Therefore, based on current research, there is an urgent need to improve engine thrust performance. The scramjet engine is designed according to the Brayton isobaric combustion cycle, and its thermodynamic cycle efficiency is much lower than that of the detonation combustion of the approxim...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): F02K7/10
CPCF02K7/10
Inventor 蔡晓东梁剑寒林志勇刘世杰陈伟强
Owner NAT UNIV OF DEFENSE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products