Pre-cooling air-breathing type variable cycle engine

A variable-cycle engine and engine technology, applied in ramjet engines, engine components, combined engines, etc., can solve the problems of expanding the working range of the sub-combustion ramjet mode, low transition state efficiency, etc., and achieve the reduction and increase of thrust. The effect of efficiency

Inactive Publication Date: 2015-12-16
TSINGHUA UNIV
View PDF6 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a pre-cooled air-breathing variable cycle engine for the bottleneck problem of low transition state efficiency in the current turbo-ram combination, that is, the pre-cooler is used to cool the incoming air, and the super combustion chamber can be enlarged efficiency, expand the working range of the sub-combustion ramjet mode, and make up for the lack of thrust when the turbo sub-combustion ramjet transitions to the scramjet mode, so as to realize the smooth transition from the turbine engine to the ramjet engine

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
  • Pre-cooling air-breathing type variable cycle engine
  • Pre-cooling air-breathing type variable cycle engine
  • Pre-cooling air-breathing type variable cycle engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The structure, principle and working process of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0014] Such as figure 1 As shown, the precooling air-breathing variable cycle engine of the present invention is based on the integration of the engine and the aircraft, the precooler 7 is integrated with the turbo sub-combustion ramjet engine 19, and the precooler 7 is used to cool the incoming air to solve the problem. The problem of insufficient thrust faced when the turbo sub-combustion ramjet mode is converted to the scramjet mode. This variable cycle engine is mainly made up of precooler 7, turbo subcombustion ramjet 19, super combustor 12, scramjet 20; Road 2, inner passage 6, outer passage 9 and turbine engine tail nozzle 15 constitute, compressor 8, combustion chamber 10 and turbine 18 are installed in inner passage 6; precooler 7 is positioned at the front of super combustion chamber 12, and The cool...

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 pre-cooling air-breathing type variable cycle engine and relates to the reusable pre-cooling air-breathing type variable cycle engine applied to aeronautics and astronautics devices. The engine mainly consists of a pre-cooler, a turbine engine, a super combustion chamber and a super combustion ramjet engine, wherein the pre-cooler and the super combustion chamber form a subsonic combustion ramjet engine; a turbine subsonic combustion ramjet engine is connected with the super combustion ramjet engine in parallel; working states of the turbine subsonic combustion ramjet engine and the super combustion ramjet engine are selected by adjusting a switching adjusting device, so that the working modal of the whole engine is controlled. The pre-cooler can reduce an inlet gas flow temperature of a super combustion chamber, can increase the efficiency of the super combustion chamber, can expand the working range of a subsonic combustion punching modal, and can make up insufficient thrust force when turbine subsonic combustion ramjet engine is transferred to the super consumption ramjet engine, so that the pre-cooling air-breathing type variable cycle engine has the advantage that the transfer class of a combined engine is stably transferred.

Description

technical field [0001] The patent of the present invention relates to a new type combined engine, in particular to a reusable pre-cooled air-breathing variable cycle engine applied to aircraft in the atmosphere. Background technique [0002] Existing air-breathing power systems flying in the atmosphere mainly include turbine engines and ramjet engines. Aero-engines are characterized by high specific impulse, but they are difficult to be used in the power system of aircraft with a height of 20km or a speed of Mach 3.0 or more. The bottleneck of research and development; the ramjet engine is suitable for higher flight Mach number and has higher specific impulse, but the flight maneuverability is poor, and the initial speed problem needs to be solved with the help of a booster. Therefore, the combination of turbo and ram can make up for their respective shortcomings. The turbo combined engine is suitable for hypersonic aircraft with a Mach number of 5-8, and it is one of the pr...

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 Applications(China)
IPC IPC(8): F02K7/14F02K7/16F02C7/14F02C7/057
Inventor 梁新刚侯凌云张扬军周兵徐向华
Owner TSINGHUA UNIV
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap