Capillary tube applied to monopropellant thruster

A capillary and thruster technology, which is applied in the field of capillary and 360° ultra-fine capillary, can solve the problems of large deviation between the length of the capillary and the frame size, difficulty in meeting precise control requirements, and large manufacturing errors, so as to improve work safety, Reduce the processing difficulty and manufacturing error, the effect of small structural stress

Active Publication Date: 2016-03-23
BEIJING INST OF CONTROL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The inner diameter of the capillary is very small, and the manufacturing error is very large, so it is difficult to meet the precise control requirements;
[0005] (2) Due to the large deviation between the capillary length and the frame size, it is difficult to match

Method used

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  • Capillary tube applied to monopropellant thruster
  • Capillary tube applied to monopropellant thruster
  • Capillary tube applied to monopropellant thruster

Examples

Experimental program
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Effect test

Embodiment

[0044] According to the requirements of flow resistance and the frame size of the single-unit thruster, determine S=45.12mm, L=20mm; according to the dimensions of S and L, obtain the capillary shape dimensions a=8mm and r=2mm.

[0045] Such as figure 1 As shown, an ultra-fine capillary tube applied to a single-element thruster, the capillary tube is bent from a straight tube (total length 45.12mm) and includes a left straight tube section 1, a first arc section 2, and a second arc section 3. Left transition straight pipe section 4, third circular arc section 5, right transition straight pipe section 6, fourth circular arc section 7, fifth circular arc section 8 and right straight pipe section 9;

[0046] Such as figure 1 As shown, the left straight pipe section 1, the first circular arc section 2, the second circular arc section 3, the left transition straight pipe section 4, the third circular arc section 5, the right transition straight pipe section 6, the fourth circular ...

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PUM

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Abstract

The invention relates to a capillary tube applied to a monopropellant thruster and belongs to the technical field of monopropellant thrusters. The outer diameter of the capillary tube ranges from 0.2 mm to 0.7 mm and the wall thickness ranges from 0.05 mm to 0.3 mm. The capillary tube comprises a left straight tube segment, a first arc segment, a second arc segment, a left transition straight tube segment, a third arc segment, a right transition straight tube segment, a fourth arc segment, a fifth arc segment and a right straight tube segment. By the adoption of the capillary tube, the flow resistance of the monopropellant thruster can be controlled precisely by selecting the total length of the capillary tube before the capillary tube is bent, so that the thrust of the monopropellant thruster is controlled precisely; and the thermal resistance of the capillary tube is increased, the amount of heat conducted to the upstream position from a hot end component when the monopropellant thruster is ignited is lowered, and the work safety of the monopropellant thruster is improved.

Description

technical field [0001] The present invention relates to a capillary used in a single-component thruster, in particular to a 360° ultra-fine capillary used in a single-component thruster, belonging to the technical field of a single-component thruster, and the outer diameter of the capillary is 0.2mm ~0.7mm, the wall thickness is 0.05mm~0.3mm. Background technique [0002] The single-element thruster is one of the main power units for spacecraft attitude and orbit control, and has a wide range of applications. With the improvement of spacecraft control accuracy requirements and the development trend of its own miniaturization, it is required that the monolithic thruster be miniaturized, and the thrust level is even lower than 200mN. Mono-element thrusters usually use capillary tubes as elements for flow delivery and pressure drop control. The role of capillary tubes in the thruster is as a flow channel for delivering propellant from the upstream to the combustion chamber, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/00
CPCF16L9/00
Inventor 吴耀武周怡秋王梦陈健周磊李胜军臧娟伟张伟付拓取杨蕊杨小菊高晨光刘瀛龙陈君
Owner BEIJING INST OF CONTROL ENG
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