Unlock instant, AI-driven research and patent intelligence for your innovation.

Cold-flow test device for one-unit linear plug spray pipe

A plug-type nozzle and cold flow test technology, which is applied in the field of advanced technology engine test research, can solve the problems of low cost cold flow test device and the like, and achieve the effects of simple structure, low cost and reduced pressure loss

Inactive Publication Date: 2012-08-15
BEIHANG UNIV
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there is a lack of a cold flow test device for a one-unit linear plug nozzle with simple structure, low cost, high measurement accuracy and good safety performance

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
  • Cold-flow test device for one-unit linear plug spray pipe
  • Cold-flow test device for one-unit linear plug spray pipe
  • Cold-flow test device for one-unit linear plug spray pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The invention is a one-unit linear plug nozzle cold flow test device, which has simple structure, low cost, high measurement accuracy and good safety performance, such as figure 1 , figure 2 As shown, it includes a combustion chamber assembly 1 , a plug cone assembly 2 , a cover plate assembly 3 , a bottom assembly 4 , a frame structure assembly 5 and a thrust frame connection assembly 6 .

[0027] The combustion chamber assembly 1 includes a combustion chamber 7, a nozzle 8 and a combustion chamber connector 9, the combustion chamber 7 is welded with a nozzle 8, preferably 2-4 nozzles 8 are evenly and symmetrically welded on the periphery of the combustion chamber 7, More preferably 4, with a diameter of 1-3 nozzles 8 can be welded on the original one-way balance pipe of the combustion chamber 7, preferably 1, and sealed with a plug, the combustio...

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 provides a cold-flow test device for a one-unit linear plug spray pipe and belongs to the research field of the advanced technology of engine tests. The cold-flow test device comprises a combustion chamber component, a plug conical component, a cover plate component, a bottom component, a framework structure component and a thrust frame connection component, wherein the plug conical component comprises an inner spray pipe, a seal groove and a plug conical surface, the inner spray pipe is a square inner spray pipe, and the plug conical surface adopts a parabola and is approximate to a cubic curve. The cold-flow test device disclosed by the invention can be used for researches of flow field structure, influence of secondary flow on the thrusting performance of the spray pipe and high compensation characteristic of the spray pipe, in addition, the test device is convenient to install.

Description

technical field [0001] The invention relates to the field of advanced technology engine test research, in particular to a one-unit linear plug nozzle cold flow test device. Background technique [0002] The plug nozzle is an advanced nozzle technology with height compensation characteristics. Foreign studies have shown that the semi-open flow field structure of the plug nozzle can automatically adapt to changes in the external environment pressure, and has a high performance. The reusable vehicle based on the plug-type nozzle engine is expected to be used as a general-purpose space transportation tool in many important aerospace fields, such as manned spaceflight, space station material transportation, interstellar transportation, moon landing transportation, satellite carrying, etc. . [0003] In the design research of the plug nozzle, in order to study the flow field structure, the influence of the secondary flow on the thrust performance of the nozzle and the height com...

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): F02K9/96F02K9/97
Inventor 王一白郭献之覃粒子刘宇
Owner BEIHANG UNIV