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Device for measuring micro-thrust

A measuring device and thrust technology, which is applied in the field of micro thrust measuring devices, can solve the problem of inability to eliminate the influence of gas supply, liquid supply pipeline and power supply line deformation, and achieve the improvement of thrust measurement accuracy, elimination of constraints, and increase of effective displacement. big effect

Inactive Publication Date: 2011-03-23
NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a micro-thrust measurement device to overcome the technical problem that the existing thrust measurement device cannot eliminate the influence of various air supply, liquid supply pipelines and power supply lines on the deformation of the micro-propulsion system

Method used

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Embodiment Construction

[0020] see figure 1 and figure 2 , the present invention includes a test computer 17, a balance 1, a displacement sensor 3, an electromagnetic damper 5, a communication line of the system to be tested and a power supply line of the system to be tested; the system to be tested is a free molecular flow micro-resistance heating thruster, and its theoretical thrust is about It is 2mN; balance 1 includes balance support 6, balance support knife 12 fixed on balance support 6, balance beam 8 placed on balance support knife 12, counterweight mass block 2 that is arranged on the right end of balance beam 8; balance The left end of the beam 8 is used to place the system to be measured 13; the right end of the balance beam 8 can hang a weight 14, and the weight 14 can apply a calibration force to the amount of rotation of the balance; the displacement sensor 3 generally selects a non-contact displacement sensor and is arranged on the balance The right end of the beam 8 is used to measu...

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Abstract

The invention relates to a device for measuring a micro-thrust, which comprises a test computer, a scale, a displacement transducer, an electromagnetic damper, a communication line of a system to be tested, and a power supply line of the system to be tested. The scale comprises a scale support, a scale support cutter fixed on the scale support, a beam of the scale arranged on the scale support cutter, and a balance mass block arranged at the right end of the beam of the scale. A weight can be suspended at the right end of the scale beam; the displacement transducer is arranged at the right end part of the scale beam; and the electromagnetic damper is arranged between the right end of the scale beam and the scale support. The power supply line of the system to be tested is led in from the contact position of the scale support and the scale beam, and fixed on the scale beam. The device for measuring the micro-thrust solves the technical problem that the conventional device for measuringthe micro-thrust cannot eliminate the influence on the deformation of various air and liquid supply pipelines and power supply lines in a micro-thrust system. The device for measuring the micro-thrust integrally measures the micro-thrust system, and radically eliminates the influence on micro-thrust measurement of a propellant supply line.

Description

technical field [0001] The invention relates to a micro-thrust measuring device, in particular to a millinew level thrust measuring device. Background technique [0002] Micro-propulsion technology has made great progress in recent years, but how to accurately obtain the thrust generated by the micro-propulsion system is still a technical difficulty. The commonly used thrust measurement device is to fix the thruster on the test frame, and obtain the thrust of the thruster by measuring the deformation of the test frame caused by the operation of the thruster. If the thrust is large, the constraints on the deformation caused by various gas supply, liquid supply pipelines and power supply lines in the system can be ignored. But for the micro-propulsion system, the influence produced by these pipelines and lines can be compared with its thrust, and if these influences are not eliminated, the thrust cannot be obtained accurately. Contents of the invention [0003] The purpose...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00
Inventor 张晰哲韩先伟陈祖奎宦飞管海兵
Owner NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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