航空学报 > 2017, Vol. 38 Issue (12): 121190-121190   doi: 10.7527/S1000-6893.2017.121190

航空发动机安装节推力测量技术与试验

雷晓波, 张强, 文敏, 任瑞冬, 雷蒂远   

  1. 中国飞行试验研究院 发动机所, 西安 710089
  • 收稿日期:2017-02-24 修回日期:2017-05-03 出版日期:2017-12-15 发布日期:2017-05-03
  • 通讯作者: 雷晓波 E-mail:627983062@qq.com

Mount thrust measurement technique for aero-engines and its tests

LEI Xiaobo, ZHANG Qiang, WEN Min, REN Ruidong, LEI Diyuan   

  1. Power-Plant Institute, Chinese Flight Test Establishment, Xi'an 710089, China
  • Received:2017-02-24 Revised:2017-05-03 Online:2017-12-15 Published:2017-05-03

摘要: 为了实现发动机飞行总推力的直接测量,开展了安装节推力测量技术研究。在发动机推力销上布置剪力应变全桥和热电阻,通过开展推力销推力载荷标定试验、应变计温度修正试验,建立安装节推力测量方法,通过相关性分析和F分布显著性分析,表明了推力载荷标定方程具有高的精度。开展了安装节推力测量地面台架试验和飞行试验。地面台架试验表明:安装节推力测量最大误差为2.41%,验证了安装节推力测量方法的准确性和可靠性。分析了安装节推力与高度、速度、发动机状态之间的特性规律,飞行试验表明:安装节推力随着飞行马赫数增大而增大,特别是飞行马赫数约在0.98~1.02之间的跨声速范围内,安装节推力随马赫数增大而急剧增大。

关键词: 航空发动机, 推力直接测量, 安装节推力, 飞行试验, 剪力应变全桥, 安装节推力特性

Abstract: Mount thrust measurement technique is developed to obtain aero-engine gross thrust in flight on direct thrust measurement method. The method was established by means of thrust-load calibration test and strain-gage thermal correction test before shear strain full-bridges and thermal resistor were installed on thrust pin. Correlation analysis and F distribution significance analysis show that the thrust-load calibration equation has high accuracy. Mount thrust measurements in bed test and flight test are carried out. The bed test results show that the maximum error of mount thrust measurement is 2.41%, verifying high accuracy and reliability of the method. The characteristics of altitude-mount thrust, speed-mount thrust and engine condition-mount thrust are analyzed. Flight test results show that mount thrust increases with the increase of flight Mach number, especially in the transonic range from about 0.98 to 1.02.

Key words: aero-engine, direct thrust measurement, mount thrust, flight test, shear strain full-bridge, mount thrust characteristics

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