实验流体力学2023，Vol.37Issue(6)：70-75,6.DOI:10.11729/syltlx20210182
高精度六分量微量滚转力矩气浮天平研制
Development of high-precision micro-rolling moment gas bearing balance
张璜炜 1向光伟 1吕彬彬 1汪多炜 1余立1
作者信息
- 1. 中国空气动力研究与发展中心 高速空气动力研究所,绵阳 621000
- 折叠
摘要
Abstract
During the reentry process of the miniaturized reentry vehicle,small asymmetry of its shape can be produced due to surface ablation,resulting in a small rolling moment.In order to obtain the high-precision micro-rolling moment measurement data of the ablation model of the miniaturized reentry vehicle in the hypersonic wind tunnel,and obtain the other five component aerodynamic data,a six component micro-rolling moment gas bearing balance was developed.The rolling moment design load of the balance is 0.02 N·m,and the axial force design load is 200 N,which are orders different from each other.The overall force measurement scheme of"4+2"balance is proposed,where the four component main balance elements cooperate with the two-component Mx-X elements to complete the extremely mismatched six component aerodynamic measurement.The results of the static calibration and the wind tunnel test show that the balance has good resolution and strong anti-interference ability,and is little affected by temperature.The measurement results of the rolling moment coefficient reach the order of 10-7.The developed gas bearing balance is little affected by the temperature and can be reused.It can measure the six components of aerodynamic data including the micro-rolling moment at the same time,which greatly improves the test efficiency and reduces the error caused by model disassembly.关键词
高超声速/应变天平/气浮天平/微量滚转力矩/测力Key words
hypersonic/strain gauge balance/gas bearing balance/micro-rolling moment/force measurement分类
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张璜炜,向光伟,吕彬彬,汪多炜,余立..高精度六分量微量滚转力矩气浮天平研制[J].实验流体力学,2023,37(6):70-75,6.
