用于发动机试验现场的推力测量传感器长期稳定性监测系统  

Long Term Stability Monitoring System for Thrust Measurement Sensors Used in Engine Testing Site

作　　者：郑科 郭健鑫 朱旺 王得志[1] 张雪飞 刘硕 Zheng Ke;Guo Jianxin;Zhu Wang;Wang Dezhi;Zhang Xuefei;Liu Shuo(Beijing Aerospace Test Technology Institute,Beijing 100074)

机构地区：[1]北京航天试验技术研究所,北京100074

出　　处：《航天制造技术》2023年第3期73-78,共6页Aerospace Manufacturing Technology

基　　金：某国防科技技术基础项目。

摘　　要：发动机高空模拟试验前需要进行推力校准,目的是确定传感器静态特性指标,如线性度、滞后性以及重复性等,关键工作是通过试验的方法来建立输入量和输出量之间的输入-输出实际特性曲线。推力校准中使用的标准传感器有效期为一年,实际使用中传感器存在长期稳定性不佳或突然损坏的现象,但在试验前准备阶段唯一不能确定问题的就是标准传感器,因此,有必要对推力测量进行长期稳定性监测,完善推力校准操作规程,通过研制一套覆盖常用量程的推力传感器比对装置,在推力架或者某个标准传感器长时间没使用时,试验前对标准传感器进行标定,与证书各项指标进行比对,经试验测试实现了对推力传感器的快速校验,时间24min,误差在千分之一内,满足了试验现场对传感器的任务要求。Before the high-altitude simulation test of the engine,thrust calibration is required to determine the static characteristic indicators of the sensor,such as linearity,sensitivity,and repeatability.The key task is to establish the actual input-output characteristic curve between the input and output quantities through experimental methods.The validity period of the standard sensor used in thrust calibration is one year.In actual use,the sensor has long-term poor stability or sudden damage,but the only problem that cannot be determined in the preparation stage before the test is the standard sensor.Therefore,it is necessary to monitor the long-term stability of thrust measurement,improve the thrust calibration operating procedures,and develop a thrust sensor comparison device that covers common ranges,When the thrust frame or a standard sensor is not in use for a long time,the standard sensor is calibrated before the test and compared with various indicators of the certificate.After experimental testing,the rapid calibration of the thrust sensor is achieved,with a time of 24 min and an error of within one thousandth,meeting the task requirements of the sensor on the test site.

关 键 词：推力测量 火箭发动机试验 传感器 推力校准 

分 类 号：V439.8[航空宇航科学与技术—航空宇航推进理论与工程]