Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A rocket-based combined cycle engine variable structure combustion chamber

A combustion chamber and engine technology, applied in rocket engine devices, machines/engines, mechanical equipment, etc., can solve the problems of variable structure scheme and design without combustion chamber, achieve normal and efficient work, improve thrust and specific impulse performance, Effects of wide operating Mach number range

Inactive Publication Date: 2017-06-09
NORTHWESTERN POLYTECHNICAL UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The domestic research on variable structure ramjet is also mainly focused on the research of variable structure intake and exhaust, but there is no variable structure design for the combustion chamber.

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 rocket-based combined cycle engine variable structure combustion chamber
  • A rocket-based combined cycle engine variable structure combustion chamber
  • A rocket-based combined cycle engine variable structure combustion chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] This embodiment is a variable structure combustion chamber of a rocket-based combined cycle engine.

[0025] refer to figure 1 , figure 2 , image 3 The variable structure combustion chamber of the rocket-based combined cycle engine is composed of a drive system 1, a back pressure chamber 14, and a combustion chamber 18. The drive system 1 is installed on the upper part of the back pressure chamber 14, and the back pressure chamber 14 is fixed on the variable section of the combustion chamber. , and form an integral structure with the combustion chamber 18; it can prevent the leakage of high-temperature gas in the combustion chamber.

[0026] The combustion chamber 18 includes a combustion chamber fixed section 2, a first variable section 3, a second variable section 4, a third variable section 5, a fourth variable section 6, a ball joint convex surface 15, a ball joint concave surface 16, Axial sealing groove 17, the fixed section 2 of the combustion chamber is seq...

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

The invention discloses a variable structure combustion chamber of a rocket-based-combined-cycle engine. The variable structure combustion chamber is composed of a drive system, a back pressure cavity and a combustion chamber body. The drive system is located at the upper portion of the back pressure cavity. The back pressure cavity is fixed to the portion above variable sections of the combustion chamber body and forms an integral structure with the combustion chamber body. A combustion chamber fixed section is sequentially connected with variable sections of the combustion chamber body. The variable sections are connected through cooperation of ball head hinge convex faces and ball head hinge concave faces. Two sets of hydraulic drive mechanisms drive the first variable section and the third variable section of the combustion chamber body through drive rods and connecting rods. Axial sealing grooves of the variable sections are filled with graphite strips so as to isolate high-temperature fuel gas in the combustion chamber body, and sealing is guaranteed. According to the variable structure combustion chamber, stable transition among different modes is achieved through grade adjustment. In the injection mode and the subsonic combustion mode, the variable sections of the combustion chamber body are adjusted by a hydraulic drive mechanism to generate different divergence angles and throat heights, so that the combustion chamber body is in the optimal work state, and the thrusting force and specific impulse performance of the combustion chamber body are obviously improved.

Description

technical field [0001] The invention relates to the technical field of rocket ramjet engines, in particular to a variable-structure combustion chamber of a rocket-based combined cycle engine. Background technique [0002] The Rocket-Based-Combined-Cycle (RBCC) engine has potential advantages such as reusability, low cost, and high reliability, and is considered to be one of the propulsion systems most likely to be used in future space-to-ground transportation systems. one. The rocket-based combined cycle engine integrates ejection mode, sub-combustion mode, super-combustion mode and pure rocket mode. In the super-combustion mode, in order to meet the needs of supersonic combustion, the flow channel of the combustion chamber needs to maintain an expanding structure; while in the ejection mode and sub-combustion mode, the flow channel of the combustion chamber needs to converge and expand to meet the high efficiency of the combustion chamber. combustion. The current rocket-...

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): F02K9/62
Inventor 潘宏亮秦飞魏祥庚何国强叶进颖王超月邹祥瑞
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products