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Wu Jinhua, Sun Haisheng, Shen Zhihong, Jiang Yubiao. 旋转流场下的振荡动导数试验技术研究[J]. Journal of Experiments in Fluid Mechanics, 2014, (4): 54-58. DOI: 10.11729/syltlx20130057
Citation:
Wu Jinhua, Sun Haisheng, Shen Zhihong, Jiang Yubiao. 旋转流场下的振荡动导数试验技术研究[J]. Journal of Experiments in Fluid Mechanics, 2014, (4): 54-58. DOI: 10.11729/syltlx20130057
Wu Jinhua, Sun Haisheng, Shen Zhihong, Jiang Yubiao. 旋转流场下的振荡动导数试验技术研究[J]. Journal of Experiments in Fluid Mechanics, 2014, (4): 54-58. DOI: 10.11729/syltlx20130057
Citation:
Wu Jinhua, Sun Haisheng, Shen Zhihong, Jiang Yubiao. 旋转流场下的振荡动导数试验技术研究[J]. Journal of Experiments in Fluid Mechanics, 2014, (4): 54-58. DOI: 10.11729/syltlx20130057
旋转流场下的振荡动导数试验技术研究
Wu Jinhua
,
Sun Haisheng
,
Shen Zhihong
,
Jiang Yubiao
Graphical Abstract
Abstract
Abstract
为研究飞机在旋转流场下的非定常气动特性,中国空气动力研究与发展中心低速所在Φ5m 立式风洞开展了旋转流场下的振荡动导数试验技术研究。本文推导了在旋转流场下识别组合动导数的方法,介绍了试验设备,获得了在旋转的同时,由振荡产生的3个组合动导数,并对试验结果进行了分析与讨论。将单自由度动导数结果与Φ3.2m 风洞试验结果进行了对比,旋转/振荡耦合试验结果表明:旋转运动使得俯仰组合动导数变得不稳定,而对于横向组合动导数,大转速则会显著增大非线性。该试验技术能够为研究旋转流场下的非定常气动特性提供一个有效的试验平台。
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