微型镓场发射电推力器的推力和比冲测量

电推进技术的发展推动了微推力测量技术和比冲测量技术的研究进程。为了评估已研制出的微型镓场发射电推力器的性能，进行了推力和比冲测量。研制了一种用于场发射电推力器的微推力测量平台；进行了LabVIEW开发；对测量平台进行了标定与分析，并通过试验比较了推力实测值与理论值，实测值范围为3~28μN。另外，利用飞行时间法，测得推力器在不同发射电流下的比冲数据，比冲范围为5917~8875s。

Thrust and specific impulse tests of miniature gallium field emission electric propulsion thruster

The development of electric propulsion technology has promoted the research process of micro thrust measurement technology and specific impulse measurement technology. In order to evaluate the performance of the developed miniature gallium field emission electric thruster, thrust and specific impulse measurements were made. A thrust measurement platform for field emission electric thrusters was developed, the LabVIEW development was carried out and the measurement platform was calibrated and analyzed. The measured values and theoretical values of the thrust were compared through experiments. The measured values range from 3 to 28μN. In addition, using the time of flight method, the thruster′s specific impulse data under different emission currents were measured, and the specific impulse′s range is 5917-8875s.