Torsional thrust balance measurement system development for testing reaction control thrusters
Torsional thrust balance measurement system development for testing reaction control thrusters
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DOI：
10.1016/j.measurement.2013.05.009
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发表时间：
2013-11
期刊：
影响因子：
5.6
通讯作者：
Arturo Acosta-Zamora;J. R. Flores;A. Choudhuri
中科院分区：
文献类型：
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作者：
Arturo Acosta-Zamora;J. R. Flores;A. Choudhuri
本文介绍了一个扭转式推力试验台的设计、研制和试验，以评估<40 N级低温推进剂反作用控制推力器的性能。由于现有的推力测量方法不能提供可靠的试验数据，因此需要新的推力测量技术来测量这一推力等级的低温推进剂供给反作用控制系统。扭转推力支架主要由一个平衡力矩臂组成，该力矩臂围绕一组无摩擦枢轴旋转。使用激光位移传感器跟踪由于施加的推力引起的力矩臂的位移。开发了一种后处理技术，以根据位移数据确定推力值。推力测量系统的测量能力在此通过在稳态和脉冲条件下对LOX/甲烷推力器的测试点火来举例说明。还评估了推力器质量和进给系统刚度对推力台测量特性的影响。测量系统提供了在稳态和脉冲工作条件下的可重复推力数据。
The paper describes the design, development, and testing of a torsional-type thrust stand to evaluate the performance of <40 N class cryogenic propellant reaction control thrusters. New thrust measurement techniques for cryogenic propellant fed reaction control systems at this thrust class are needed as current methods are deficient in providing reliable test data. The torsional thrust stand primarily consists of a balanced moment arm rotating around a set of frictionless pivots. The displacement of the moment arm due to applied thrust was tracked using a laser displacement sensor. A post-processing technique was developed to determine thrust values from displacement data. The measurement capability of the thrust measurement system is exemplified herein through the test firing a LOX/Methane thruster at steady-state and pulsing conditions. Effects of thruster mass and feed system stiffness on thrust-stand measurement characteristics were also assessed. The measurement system provided repeatable thrust data at steady-state and pulsing operating conditions.