Rocket nozzle and rbcc engine applied to rbcc engine

A technology of engines and rockets, which is applied in the field of aerospace engines, can solve problems such as poor performance, and achieve the effects of increasing thrust-to-weight ratio, improving mixing efficiency, and increasing contact area

Active Publication Date: 2021-10-12
NAT UNIV OF DEFENSE TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the current design of rocket nozzles, none of them can meet the requirements of rapid mixing of rocket jet and air in a very short range while ensuring low energy loss, and the performance is poor.

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
  • Rocket nozzle and rbcc engine applied to rbcc engine
  • Rocket nozzle and rbcc engine applied to rbcc engine
  • Rocket nozzle and rbcc engine applied to rbcc engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0026] The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or ...

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 relates to a rocket nozzle applied to an RBCC engine and the RBCC engine. The rocket nozzle applied to the RBCC engine, the RBCC engine is provided with an inner flow channel, the rocket nozzle is arranged in the inner flow channel, the rocket nozzle includes: a throat, and the shape of the throat is a circle shape, and the area of ​​the throat is A1; and the outlet, the outlet communicates with the throat and is located in the isolation section of the inner flow channel, the shape of the outlet is not circular, and the area of ​​the outlet is A2; the value of A2 is estimated by the following mathematical model, so that when the RBCC engine is in the design condition, the jet flow of the rocket nozzle and the injection air meet the pressure matching condition: where K is the The specific heat ratio of the fuel in the rocket nozzle, Mat is the Mach number of the outlet, Pts is the total pressure of the ejected air, and Ptp is the total pressure of the rocket.

Description

technical field [0001] The invention relates to the technical field of aerospace engines, in particular to a rocket nozzle applied to an RBCC engine and an RBCC engine. Background technique [0002] The speed range of the engine is an important design index of the engine. A wide speed range means a wider application range of the engine. The larger the flight envelope range, the more practical the engine and the wider the application prospect. RBCC (Rocket-Based Combined Cycle, rocket-based combined cycle propulsion system) engine breaks through the limitations of conventional air-breathing ramjet engines, can work at a wider flight Mach number, and has a wide range of applications. [0003] However, for a conventional geometrically non-adjustable RBCC engine, the engine is in the ejection mode at a lower Mach number. At this time, the engine needs to use the internal rocket to pressurize the inhaled air. In order to further increase the thrust, the rocket jet and the air nee...

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): F02K9/97F02K7/18
CPCF02K7/18F02K9/97
Inventor 顾瑞孙明波蔡尊李佩波姚轶智王泰宇
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

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