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Minisize chemical propeller with pressure sensor

A pressure sensor and thruster technology, applied in the field of micro-propulsion technology, can solve problems such as the inability of feedback control of MEMS chemical thrusters, and achieve the effects of eliminating uneven thrust and impulse, short ignition delay time, and low ignition power

Inactive Publication Date: 2005-04-06
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to solve the problem that the existing MEMS chemical thrusters cannot be feedback controlled, and reduce the difficulty of processing technology

Method used

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  • Minisize chemical propeller with pressure sensor
  • Minisize chemical propeller with pressure sensor
  • Minisize chemical propeller with pressure sensor

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] 1. Overall and basic unit structure

[0032] figure 2 Shown is the overall structure of the thruster, which is formed by bonding the upper silicon wafer 1 and the lower silicon wafer 2. It is a periodic array of a series of basic propulsion units 3. The size of the array can be changed according to the actual use requirements. Craft level limitation. In order to prevent the chain explosion of adjacent units from damaging the entire propeller due to the explosion of one unit, the grouping array layout of propulsion units is adopted.

[0033] Such as image 3 As shown, the upper part 4 of the basic propulsion unit 3 integrates the combustion chamber, the ignition charge chamber and the nozzle. The nozzles are uniformly distributed around the combustion chamber and are rotationally symmetrical with respect to the central axis of the combustion chamber. The ...

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Abstract

The belt pressure transmitter miniature chemistry propeller, belongs to the micro advancement technology and the MEMS area of technology. In order to solve the existing MEMS chemistry propeller to be unable the reaction control question, this invention discloses a kind of belt pressure transmitter miniature chemistry propeller, he becomes by the upper formation silicon chip and the lower level silicon chip two parts of caking, and is a series of basic advancements unit periodic array; Each basic advancement unit upper formation partially integrated the combustion chamber, the bomb igniter cavity and the nozzle, the nozzle plate and the combustion chamber base initial point gunpowder cavity unites passes; Each basic advancement unit lower level partially integrated the pressure transmitter and the igniter, its base for in concave frustum structure, the crown for the pressure sensitive thin film, the pressure transmitter inlays in the pressure sensitive thin film, the igniter is located the pressure sensitive thin film the top.The invention causes in the combustion chamber to implement the pressure to survey into possibly, simultaneously has omitted the craft step which the combustion chamber and the nozzle healthily gathers, has avoided because healthily gathers causes aims at the error.

Description

technical field [0001] The invention belongs to the field of micro propulsion technology (Micro Propulsion) and MEMS technology (Micro Electro-Mechanical System). Background technique [0002] The propulsion system is the key subsystem of most spacecraft, mainly used for orbit maneuvering, orbit keeping and special attitude control of the spacecraft. However, in the past two decades, the microsatellites (mass less than 20kg) developed internationally, especially the nano / picosatellites (mass less than 10kg), are hardly equipped with propulsion systems, so they have extremely limited maneuverability. This is mainly because the traditional propulsion system has a large volume and mass, which is not suitable for the use of microsatellites. With the miniaturization of satellites, and the development of multi-nano / pico-satellite networking and formation flight, the demand for micro-propellers with small size, light weight, high precision and low power consumption is becoming mor...

Claims

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Application Information

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IPC IPC(8): B64G1/42F02K9/08
Inventor 尤政张高飞林杨任大海吕鹏
Owner TSINGHUA UNIV
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