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 increasing the outline structure of the nozzle. Achieve the effect of making up for the defect of stealth function, good stealth ability and simple structure

Active Publication Date: 2014-04-02
AECC SHENYANG ENGINE RES INST
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  • 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

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  • Axisymmetric vectoring nozzle with good stealth function
  • Axisymmetric vectoring nozzle with good stealth function
  • Axisymmetric vectoring nozzle with good stealth function

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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...

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PUM

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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 ability. 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 for th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K1/11F02K1/16F02K1/78
Inventor 赵春生徐速任利锋
Owner AECC SHENYANG ENGINE RES INST
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