微推力测量方法及其关键问题分析
收稿日期: 2013-04-15
修回日期: 2013-07-04
网络出版日期: 2013-07-10
Methods of Micro Thrust Measurement and Analysis of Its Key Issues
Received date: 2013-04-15
Revised date: 2013-07-04
Online published: 2013-07-10
洪延姬 , 周伟静 , 王广宇 . 微推力测量方法及其关键问题分析[J]. 航空学报, 2013 , 34(10) : 2287 -2299 . DOI: 10.7527/S1000-6893.2013.0334
The technology of micro thrust measurement is employed to evaluate the performance of micro-thrusters. The measurement principles of steady thrust, pulse impulse, average thrust and instantaneous thrust are introduced. The classical thrust stands are summarized and classified into types of torsional beam, balance, hanging pendulum and hanging arm according to their dynamic configurations. Their characteristics, purposes, advantages and disadvantages are analyzed. Such key problems as measurement principle research, error influence factors and countermeasures, calibration, and measurement automatization are discussed. Based on the above analysis, a μN-thrust stand is designed and implemented. The experiment results demonstrate that the designed system features good repetitivity of measurement and up to μN levels of accuracy. Thus it verifies the feasibility of the thrust stand for thrust measurement and its effect in improving precision and stability.
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