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

An Axisymmetric Vectoring Nozzle with Good Stealth Function

A vector nozzle, axisymmetric technology, which is applied to jet propulsion devices, machines/engines, etc., can solve the problems of not being able to block the front hot end components, affecting the adjustment range of the nozzle throat, and weak stealth ability, so as to make up for the stealth function. Defects, good stealth, high reliability effects

Active Publication Date: 2016-08-24
AECC SHENYANG ENGINE RES INST
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the internal hollow structure of the traditional aero-engine axisymmetric vector nozzle, it cannot effectively shield the front-end hot-end components, resulting in very weak stealth capabilities
The conventional axisymmetric plug-type vector nozzle only adds a closed center body at the center of the nozzle, and needs to add a spherical section at the cylinder to form a spherical pair. However, due to the large cross-sectional area of ​​this closed center body, serious The adjustment range of the throat area of ​​the nozzle is affected, thereby affecting the working point of the engine; in addition, due to the increase of the spherical section, the outer structure of the nozzle increases, resulting in certain problems in the overlap with the aircraft

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
  • An Axisymmetric Vectoring Nozzle with Good Stealth Function
  • An Axisymmetric Vectoring Nozzle with Good Stealth Function
  • An Axisymmetric Vectoring Nozzle with Good Stealth Function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The invention provides an axisymmetric vector nozzle with good stealth function, which is characterized in that it is composed of a cylinder body 1, an expansion section adjustment mechanism, a throat adjustment mechanism, a sealing member, a central shielding member and an outer cover member; specifically:

[0036] The front end of cylinder body 1 is connected with the engine as a supporting member of the entire nozzle; the expansion section adjustment mechanism is mainly composed of vector actuator 2, vector adjustment ring 4, pull rod 8, and expansion adjustment piece 9; wherein, vector actuator 2 Arranged along the circumferential direction of the nozzle, the front end is connected to the outer wall of the barrel 1 through a mechanical connection, and the rear end is connected to the vector adjustment ring 4; The body 1 is connected to ensure the radial displacement of the vector adjusting ring 4 is limited; the tie rod 8 is evenly distributed along the circumference...

Embodiment 2

[0057] The invention provides an axisymmetric vector nozzle with good stealth function, which is characterized in that it is composed of a cylinder body 1, an expansion section adjustment mechanism, a throat adjustment mechanism, a sealing member, a central shielding member and an outer cover member; specifically:

[0058] The front end of cylinder body 1 is connected with the engine as a supporting member of the entire nozzle; the expansion section adjustment mechanism is mainly composed of vector actuator 2, vector adjustment ring 4, pull rod 8, and expansion adjustment piece 9; wherein, vector actuator 2 Arranged along the circumferential direction of the nozzle, the front end is connected to the outer wall of the barrel 1 through a mechanical connection, and the rear end is connected to the vector adjustment ring 4; The body 1 is connected to ensure the radial displacement of the vector adjusting ring 4 is limited; the tie rod 8 is evenly distributed along the circumference...

Embodiment 3

[0079] The invention provides an axisymmetric vector nozzle with good stealth function, which is characterized in that it is composed of a cylinder body 1, an expansion section adjustment mechanism, a throat adjustment mechanism, a sealing member, a central shielding member and an outer cover member; specifically:

[0080] The front end of cylinder body 1 is connected with the engine as a supporting member of the entire nozzle; the expansion section adjustment mechanism is mainly composed of vector actuator 2, vector adjustment ring 4, pull rod 8, and expansion adjustment piece 9; wherein, vector actuator 2 Arranged along the circumferential direction of the nozzle, the front end is connected to the outer wall of the barrel 1 through a mechanical connection, and the rear end is connected to the vector adjustment ring 4; The body 1 is connected to ensure the radial displacement of the vector adjusting ring 4 is limited; the tie rod 8 is evenly distributed along the circumference...

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

An axisymmetric vectoring nozzle with a good stealth function is characterized in that the axisymmetric vectoring nozzle comprises a barrel, a divergent section adjustment mechanism, a throat adjustment mechanism, a sealing component, a central shielding component and a shroud component; specifically, the front end of the barrel is connected with an engine, and the divergent section adjustment mechanism mainly comprises vectoring actuator cylinders, vector-adjusting rings, pull rods and divergence-adjusting plates; the vectoring actuator cylinders are arranged along the circumference of the nozzle, the front ends of the vectoring actuator cylinders are mechanically connected with the external wall of the barrel, and the rear ends of the vectoring actuator cylinders are connected with the vector-adjusting rings; the rear ends of the vector-adjusting rings are connected with the pull rods through revolute pairs and connected with the barrel through centering mechanisms, so that the radial displacement of the vector-adjusting rings is limited; the pull rods are evenly distributed along the circumference of the nozzle, and the other ends of the pull rods are connected with the outsides of the divergence-adjusting plates through revolute pairs. The axisymmetric vectoring nozzle has the advantages that the axisymmetric vectoring nozzle has good stealth capability, so that the defect in the stealth function of conventional axisymmetric vectoring nozzles is made up for, and meanwhile, the axisymmetric vectoring nozzle has the advantages of simple structure and high reliability.

Description

technical field [0001] The invention relates to the field of aeroengine nozzles, in particular to an axisymmetric vector nozzle with good stealth function. Background technique [0002] Due to the internal hollow structure of the traditional aero-engine axisymmetric vector nozzle, it cannot effectively shield the front-end hot-end components, resulting in very weak stealth capabilities. The conventional axisymmetric plug-type vector nozzle only adds a closed center body at the center of the nozzle, and needs to add a spherical section at the cylinder to form a spherical pair. However, due to the large cross-sectional area of ​​this closed center body, serious The adjustment range of the throat area of ​​the nozzle is affected, thereby affecting the working point of the engine; in addition, due to the increase of the spherical section, the outer structure of the nozzle increases, resulting in certain problems in overlapping with the aircraft. Therefore, in order to make up f...

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): F02K1/11F02K1/16F02K1/78
Inventor 赵春生徐速任利锋
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