A vaporizing water micro-thruster

X. Ye, F. Tang, Haiqing Ding, Zhaoying Zhou
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引用次数: 10

Abstract

Vaporizing water micro-thrusters are fabricated and tested. A single micro-thruster we developed, fabricated by MEMS technologies, consists of a microresistor, 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 works in a pulse mode. During each period, an electric pulse is applied on 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 48 W, the total impulse produced in a second is more than 0.2/spl times/10/sup -6/ N/spl middot/s.
汽化水微型推进器
研制并试验了汽化水微推力器。我们利用MEMS技术开发了一个微型推力器,由一个微电阻器、一个汽化室、一个喷嘴、一个推进剂入口和一个微通道组成。水推进剂通过毛细管力和压力从推进剂罐送入推进器。微型推进器以脉冲模式工作。在每个周期内,在微电阻上施加电脉冲加热室中的水,使其汽化成高压气体。当气体通过喷嘴排出时,就会产生推力。试验结果表明,对于脉冲功率为48 W的单个微推力器,每秒产生的总脉冲大于0.2/spl倍/10/sup -6/ N/spl中点/s。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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