Study of a vaporizing water micro-thruster

被引：44

作者：

Ye, XY ^{[1
]}

Tang, F ^{[1
]}

Ding, HQ ^{[1
]}

Zhou, ZY ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Precis Instruments, Beijing 100084, Peoples R China

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2001年 / 89卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

thruster; micro-machining; resistojet; micro-propulsion;

D O I：

10.1016/S0924-4247(00)00540-9

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Vaporizing water micro-thrusters are fabricated and tested. A single micro-thruster fabricated using MEMS technology consists of a micro-resistor, a vaporizing chamber, a nozzle, a propellant inlet and a micro channel. The water propellant is fed into the thruster from a propellant tank by capillary force and pressure. The micro-thruster is designed to operate in pulse mode. During each period, an electric pulse is applied to the micro-resistor to heat the water in the chamber to vaporize it into high-pressure gas. A thrust is then produced as the gas exits through the nozzle, Test results show that for a single micro-thruster with pulse power of 30 W. the total impulse produced in a second is more than 0.2 x 10(-6) N s. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：159 / 165

页数：7