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

External-internal culvert pressure ratio optimization design method and system

An optimized design and connotation technology, applied in the field of optimal design method and system of external and internal pressure ratio, can solve the problems of reducing engine life and structural reliability

Active Publication Date: 2021-05-11
AECC SHENYANG ENGINE RES INST
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] c) After the engine performance declines, some performance indicators need to be achieved by increasing the engine speed, reducing engine life and structural reliability

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
  • External-internal culvert pressure ratio optimization design method and system
  • External-internal culvert pressure ratio optimization design method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In order to make the objectives, technical solutions and advantages of the implementation of the application clearer, the technical solutions in the implementation modes of the application will be described in more detail below with reference to the drawings in the implementation modes of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present application. The embodiments described below by referring to the figures are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application. Embodiments of the pr...

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 belongs to the technical field of aero-engine control, and particularly relates to an external-internal culvert pressure ratio optimization design method and system. The method comprises the steps that a stress application heat screen total pressure recovery coefficient, a middle state afterburner total pressure recovery coefficient and a stress application state afterburner total pressure recovery coefficient are obtained; determining a first ratio of the stress application state afterburner total pressure recovery coefficient to the stress application heat shield total pressure recovery coefficient, and determining a second ratio of the middle state afterburner total pressure recovery coefficient to the stress application heat shield total pressure recovery coefficient; and carrying out optimization design on the external-internal culvert pressure ratio of the engine by taking the condition that the design parameter of the external-internal culvert pressure ratio is located between the first ratio and the second ratio as a limiting condition. According to the invention, the mixing loss can be greatly reduced when the engine works in an intermediate state, and the engine performance is improved; a cooling air film is effectively formed in a stress application state, and the working safety of the two-dimensional nozzle is ensured.

Description

technical field [0001] The application belongs to the field of aero-engine control, and in particular relates to a method and system for optimizing design of external and internal pressure ratios. Background technique [0002] Stealth performance is a must-have typical feature and technical index for a new generation of combat aircraft. As the main component that is visible from the rear of the engine, the stealth performance of the exhaust system is crucial to the stealth of the engine and even the rear fuselage of the aircraft. The structure of the binary nozzle Features can better realize radar stealth and infrared stealth. The binary nozzle is easy to carry out stealth design, and it is easy to integrate with the rear fuselage of the aircraft. It has been successfully applied to a foreign fighter jet. [0003] Considering the design difference from the axisymmetric nozzle, the binary nozzle needs a large amount of engine air to cool it. When matching the whole machine, ...

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): G06F30/17G06F30/28G06F119/14G06F119/08G06F111/04G06F113/08
CPCG06F30/17G06F30/28G06F2119/14G06F2119/08G06F2111/04G06F2113/08
Inventor 陈伟博张志舒姜繁生潘旭唐明智阮文博张志成
Owner AECC SHENYANG ENGINE RES INST
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com