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Micro-thrust measurement device with cylindrical target

A measuring device, cylindrical technology, applied in the direction of measuring devices, force/torque/work measuring instruments, instruments, etc., can solve problems such as changes in engine performance parameters, the influence of engine plume field, rebound, etc., to achieve smooth optical path and ensure reliability. The effect of sex, easy to move

Active Publication Date: 2015-04-22
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the plume will rebound after hitting the flat target, which will affect the plume field of the engine and may change the performance parameters of the engine

Method used

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  • Micro-thrust measurement device with cylindrical target
  • Micro-thrust measurement device with cylindrical target
  • Micro-thrust measurement device with cylindrical target

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Embodiment Construction

[0041]The present invention will be further described below in conjunction with accompanying drawing.

[0042] The present invention is a micro-thrust measuring device with a cylindrical target, comprising a target system 1, a displacement sensor system 2 and a target mounting block 3, such as figure 1 As shown; Among them, the target system 1 includes the target 101, the elastic beam 102 and the vertical angle aluminum 103; the displacement sensor system 2 includes the displacement sensor 201, the sensor mounting rod 202 and the sensor mounting plate 203; the target mounting block 3 is the target system 1 and the sensor The installation base of the system 2 is used to realize the fixation between the target system 1 and the sensor system 2 and the mobile platform of the external displacement mechanism.

[0043] In the target system 1, the vertical angle aluminum 103 is an L-shaped aluminum piece with a cross-section consisting of a horizontal plate and a vertical plate, such ...

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Abstract

The invention discloses a micro-thrust measurement device with a cylindrical target. The micro-thrust measurement device comprises a target system, a displacement sensor system, a target mounting block and a thermal protection system. In the target system, an elastic beam and the target mounting block are connected and positioned through vertical angle aluminium, and the perpendicularity of the elastic beam is guaranteed; the target is mounted at the bottom end of the elastic beam. Through the design to the target, the axial speed of plume is converted into a radial speed, the influence of the target on the plume field of an engine is reduced, and the measurement result is more precise. In the displacement sensor system, a sensor mounting rod is vertically arranged, and the top end of the sensor mounting rod is fixedly connected with the bottom face of the target mounting block; a displacement sensor is mounted at the bottom end of the sensor mounting rod through a sensor mounting plate. In the thermal protection system, the elastic beam is subjected to thermal protection through two sections of ceramic tubes, and meanwhile the thermal protection to the sensor is achieved through a sensor protection cover. The micro-thrust measurement device has the advantages of being capable of achieving the integration and the reliability of a measurement result.

Description

technical field [0001] The invention relates to the field of space micro-thrust thrusters, in particular to a micro-thrust measurement device with a cylindrical target. Background technique [0002] With the development of electric propulsion technology, more and more electric thrusters have been designed, but the thrust of many electric thrusters is in the mN level, and it is difficult to accurately measure such a small thrust by conventional thrust measurement methods. The thrust is a very important parameter of the thruster. If the thrust cannot be determined, some important performance parameters of the thruster, such as specific impulse, will also be uncertain, which will bring great trouble to the practical application of the thruster. [0003] According to the existing data, Tsinghua University in China has developed a target method thrust measurement device for micro-nozzle devices. The installation method of the target in this device is suspended, and the target is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
Inventor 汤海滨王宝军孔梦迪杨文将徐宇杰任军学
Owner BEIHANG UNIV
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