RESEARCH ON DELTA WING UNSTEADY HIGH ANGLE OF ATTACK AERODYNAMICS

三角翼非定常大迎角空气动力学研究

• 批准号: 06452343
• 负责人: SATO Junzo
• 金额: $ 4.74万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06452343/
• 关键词: Delta wing; Vortex; High Angles of Attack; Unsteady Aerodynamics

This research is to study the basic physical details of the fluid dynamic phenomena associated with the wing rock observed at hjgh angles of attack on delta wings. A specially designed forced roll oscillation method with a two-components balance was introduced to take the aerodynamic force and moment ; not adopting the conventional free rotation methods. The success of the method depends on the accurate separation of the inertial and aerodynamic forces from the measurement. Use of light weight models, low rate of oscillation and elaborate calibration of balances made it possible to get data up to the non-dimensional roll rate of 0.1.Two delta wing models of 14 and 7 degree semi-apex angle, respectively, are put to the tests and the model with a smaller apex angle shows very complicated aerodynamics. The reason of these changes are mode clear in relation to the vortex breakdown and vortex splitting by comparing the blance outputs with the flow visualization pictures.

本研究旨在研究三角翼大迎角下与翼岩相关的流体力学现象的基本物理细节。介绍了一种特殊设计的双分量平衡强制滚转振荡方法，用于测量气动力和力矩；不采用常规的自由旋转方法。该方法的成功取决于从测量中准确分离惯性力和气动力。使用重量轻的模型，低振荡率和平衡的精心校准使数据达到0.1的无因次滚动率成为可能。对两种半顶点角分别为14度和7度的三角翼模型进行了试验，结果表明，较小顶点角的三角翼模型表现出非常复杂的气动特性。通过对比平衡输出和流动显示图像，可以清楚地看到这些变化的原因与旋涡破裂和旋涡分裂有关。

项目成果

Dong Toun Kwak, et al.: "Experimental Research on Unsteady Aerodynamics of Rolling Delta Wings" Journal of the Japan Society for Aeronautical and Space Sciences. Vol. 45, No. 519, (in press.). (1997)

Dong Toun Kwak等人：“滚动三角翼非定常空气动力学的实验研究”日本航空航天学会杂志。

郭東潤: "ロールするデルタ翼の非定常空気力に関する研究" 日本航空宇宙学会誌. 45(印刷中). (1997)

郭东润：“滚动三角翼的非定常气动力研究”，日本航空学会学报45（出版中）。

郭東潤: "1995 Japan-China Joint Symposium on Advanced Energy and Transportation Engineering, A Collection of Technical Papers" 佐藤淳造,韓肇元, 272 (1995)

郭东君：《1995年日中先进能源与交通工程联合研讨会技术论文集》佐藤淳三，韩兆元，272（1995）