| 矢量喷管静推力精确测量试验技术研究 |
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| 引用本文： | 邓祥东,宋孝宇,季军,郭大鹏,李鹏.矢量喷管静推力精确测量试验技术研究[J].实验流体力学,2018,32(1):90-97. |
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| 作者姓名： | 邓祥东 宋孝宇 季军 郭大鹏 李鹏 |
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| 作者单位： | 1.中国航空工业空气动力研究院, 沈阳 110034 |
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| 摘 要： | 详细论述了矢量喷管静推力精确测量试验技术的原理、所需设备以及试验方法，该技术主要模拟喷管模型喷流落压比以及出口马赫数相似参数，将模型安装在推力测量平台的真空试验舱中，同时利用外式天平进行矢量喷管气动力的精确测量。试验数据经过流量修正、安装姿态修正、基于橡胶膜片的空气桥系统对于天平的压力影响以及流量影响修正之后，即可以得到较为精确的矢量喷管静推力值、推力系数以及矢量角等参数。试验结果表明:在推力测量平台进行矢量喷管静推力测量试验，轴向、法向推力系数以及矢量角随落压比的变化规律正确，试验精度满足国军标要求，达到型号应用水平。
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| 关 键 词： | 矢量喷管 静推力 落压比 推力系数 矢量角 空气桥 |
| 收稿时间： | 2016-12-06 |
Research on static thrust accurate measurement testing technology of vectoring nozzle |
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| Affiliation: | 1.China Aerodynamics Research Institute of Aeronautics, Shenyang 110034, China2.Aeronautic Science and Technology Key Lab for High Speed and High Reynolds Number Aerodynamic Research, Shenyang 110034, China |
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| Abstract: | The principle, test bench and method of the vectoring nozzle static thrust measurement experimental technology are introduced in this paper. The primary simulation parameters are the nozzle pressure ratio (NPR) and the Mach number at the nozzle exhaust. The nozzle model is installed in the vacuum cabin of the thrust test bench, and aerodynamic forces of the nozzle model are measured accurately by the wall balance. After the mass flow correction, installation position correction, and the correction of pressure effect and mass flow effect to the balance caused by the air bridge system based on the rubber membrane, the exact values of the vector nozzle static thrust, thrust coefficient and vector angles etc. are obtained. The experimental results show that the axial thrust coefficient, the normal thrust coefficient and the variation trend of vector angle with NPR, which is measured in the vector nozzle static thrust measurement experiment using the thrust test bench are correct, the test results precision can satisfy the GJB requirements for force-test precision, and the technique can be applied in project test. |
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