This paper presents a study of a new tubular vaporizing liquid micro-thruster (VLM) with induction heating. The developed micro-thruster consists of a micro-heater core, an excitation coil, a vaporizing chamber, a nozzle and a micro-channel, all integrated in a glass tube with a dimension of 3 mm (outer diameter) × 18 mm (length). The temperature of the micro-heater core is tested with experiments and an optimal AC frequency is selected for the VLM based on the experimental tests. Vaporization of water-propellant feeding with different flow rates range of 0.1 ml/min − 0.3 ml/min is demonstrated. A maximum thrust force of 680 μN at 0.3 ml/min propellant consumption rate is realized measured with a pendulum thrust stand. Comparing with other VLMs, one merit of the new VLM is that there is no physical connection between the micro-heater core and the power supply. Other merits of the new VLM proposed by this paper is that it can work with a larger input power, provide more heat energy and generate a relative larger thrust force.

本文介绍了一种新型的感应加热管状汽化液体微推力器（VLM）。研发的微型推力器由微型加热器芯，励磁线圈，汽化室，喷嘴和微通道组成，所有部件均集成在尺寸为3毫米（外径）×18毫米（长度）的玻璃管中）。通过实验测试了微加热器芯的温度，并根据实验测试为VLM选择了最佳交流频率。证明了在0.1 ml / min-0.3 ml / min的不同流速范围内的水推进剂进料的汽化。使用摆式推力架测得的0.3 ml / min推进剂消耗速率下的最大推力为680μN。与其他VLM相比，新的VLM的一个优点是，微型加热器核心和电源之间没有物理连接。本文提出的新型VLM的其他优点是，它可以在较大的输入功率下工作，提供更多的热能并产生相对较大的推力。