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A three-bearing thrust vectoring nozzle structure based on 3D printing

A three-dimensional printing, thrust vectoring technology, applied in jet propulsion devices, machines/engines, etc., can solve the problems of difficult assembly, heavy structural weight, and many processing parts, and achieve the effect of light weight, simple structure, and convenient assembly.

Active Publication Date: 2017-07-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The geometric structure of the three-section pipe is complicated, and the transmission method is used to process many parts, the assembly is difficult, and the structure is heavy.

Method used

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  • A three-bearing thrust vectoring nozzle structure based on 3D printing
  • A three-bearing thrust vectoring nozzle structure based on 3D printing
  • A three-bearing thrust vectoring nozzle structure based on 3D printing

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Embodiment Construction

[0026] A three-bearing thrust vector nozzle structure based on three-dimensional printing such as figure 1 As shown, it includes the engine connecting section 1, the first section nozzle 2, the second section nozzle 3, the third section nozzle 4, and the ball 5;

[0027] Such as image 3 As shown, the engine connecting section 1 includes a first pipe 1-1, a first bearing outer ring 1-2; the first bearing outer ring 1-2 includes a first housing 1-2-1, a first half The circular hole 1-2-2, the first raceway 1-2-3; the first semicircular hole 1-2-2 is located on the end surface of the first housing 1-2-1, the first semicircular hole 1- The diameter of 2-2 is the same as that of ball 5. The first semicircular hole 1-2-2 extends through the end surface of the first housing 1-2-1 to the first raceway 1-2-3; the engine connecting section 1 passes through the three-dimensional Integrated printing and processing methods;

[0028] Such as Figure 4 As shown, the first section nozzle 2 inclu...

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Abstract

The invention belongs to the technical field of aircraft engine thrust vectoring and discloses a three-dimensional printing based three-bearing swivel duct nozzle structure. The three-dimensional printing based three-bearing swivel duct nozzle structure is characterized by comprising an engine connection section, three nozzle sections and balls, the engine connection section is connected with the three nozzle sections through bearings, bearing inner and outer races and the nozzle sections are made integrally by three-dimensional printing, each of the bearing inner and outer races is provided with a small semicircular hole, the small semicircular holes of each two adjacent bearing inner and outer races can be aligned to form a round hole, the balls can enter rolling ways through the round holes, rolling bearings are formed when the rolling ways are full of the balls, and the small semicircular holes are guaranteed against meeting in an operation process of the nozzle by adjustment of relative positions of the small semicircular holes of the bearing inner and outer races, so that the balls in the bearings are prevented from shedding. The three-dimensional printing based three-bearing swivel duct nozzle structure can be assembled without connectors such as screws and bolts and has the advantages of simple structure, convenience in assembly, light weight and the like.

Description

Technical field [0001] The invention relates to a three-bearing thrust vectoring nozzle structure based on three-dimensional printing, which belongs to the technical field of aeroengine thrust vectoring in the aviation field. Background technique [0002] The three-bearing thrust vectoring nozzle is a large turning angle thrust vectoring nozzle used in vertical / short take-off and landing aircraft. The nozzle is composed of three sections of tubes connected by bearings. The first section of the tube is connected with the turbofan engine through the bearings. , Through three bearings to achieve the rotation of adjacent pipes, so as to achieve deflection of more than 90 ° deflection. The geometric structure of the three-section pipe is complicated, there are many parts to be processed by the transmission method, the assembly is difficult, and the structure is heavy. In view of the above situation, a three-bearing thrust vector nozzle structure based on three-dimensional printing is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K1/78F02K1/80
CPCF02K1/78F02K1/80F05D2240/50
Inventor 王向阳朱纪洪
Owner TSINGHUA UNIV