Wall and support interference corrections of NASA common research model wind tunnel tests in JAXA
Wall and support interference corrections of NASA common research model wind tunnel tests in JAXA
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DOI：
10.2514/6.2013-963
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发表时间：
2013-01
期刊：
影响因子：
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通讯作者：
Masataka Kohzai;M. Ueno;Seigo Koga;N. Sudani
中科院分区：
文献类型：
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作者：
Masataka Kohzai;M. Ueno;Seigo Koga;N. Sudani
在JAXA 2m x 2m跨音速风洞（JTWT）中，风洞用户对高测量精度的需求越来越多，以开发高性能的飞行器和运载火箭。必须建立联合行波管的综合现代测试技术。使用80%比例的NASA通用研究模型（CRM）进行风洞测试以验证我们的结果。确认了天平校准温度引起的天平输出误差。试验段马赫数、净风洞浮力、洞壁干扰和升流角修正被综合并应用于JTWT的CRM风洞试验数据。用有支撑和无支撑的CFD结果研究了支撑干扰效应。此外，我们的壁干扰修正结果和支持干扰的影响进行了比较，与美国宇航局国家跨音速设施（NTF）和美国宇航局艾姆斯11英尺风洞的壁干扰修正，支持干扰影响的NTF。因此，这些结果表明，适当地应用天平校准矩阵、基本风洞干扰修正和支架干扰修正，可以更精确地估算不受风洞影响的气动数据。
In the JAXA 2m x 2m Transonic Wind Tunnel (JTWT), there have been more needs of wind tunnel users for high measurement accuracy to develop aircraft and launch vehicles with high performance. Integration modern test techniques of the JTWT have to be established. Wind tunnel tests with an 80% scaled NASA Common Research Model (CRM) are conducted to validate our results. Errors of balance output due to balance calibration temperature are confirmed. The test section Mach number, the clear tunnel buoyancy, the wall interference, and the upflow angle corrections are integrated and applied to the CRM wind tunnel tests data in the JTWT. Support interference effects with results of CFD with support and CFD without support are investigated. Moreover, our wall interference correction results and support interference effects are compared with wall interference corrections of the NASA National Transonic Facility (NTF) and the NASA Ames 11-ft Wind Tunnel, and support interference effects of the NTF. Thus, these results show that aerodynamic data, which are not affected by wind tunnel, can be estimated more precisely by the application of the balance calibration matrix, fundamental wind tunnel interference corrections, and the support interference correction appropriately.