| 机翼动态气动特性实验研究 |
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| 引用本文： | 于欣芝,杨永年,巫泽.机翼动态气动特性实验研究[J].航空学报,1996,17(5):13-17. |
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| 作者姓名： | 于欣芝 杨永年 巫泽 |
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| 作者单位： | 西北工业大学五系, 西安, 710072 |
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| 基金项目： | 国防科学基金,航空科学基金，国防科工委“八五”预研课题 |
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| 摘 要： | 介绍了动态特性风洞实验的技术方案、测试系统和测试软件。对前缘后掠６０°的三角翼在迎角０°～９０°范围内快速上仰时的升力进行了测量。结果表明：机翼快速上仰时，随上仰速率增大最大升力系数增高，即动态升力效应更明显；失速迎角也增大。此外，给出了简缩频率、平均迎角、振荡振幅以及俯仰轴位置等对振荡机翼产生的非定常瞬时力的影响
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| 关 键 词： | 机翼振荡 非定常流 动态特性 |
| 收稿时间： | 1995-01-23 |
| 修稿时间： | 1995-07-10 |
EXPERIMENT INVESTIGATION ABOUT THE UNSTEADY AERODYNAMIC CHARACTERISTICS OF WINGS |
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| Yu Xinzhi,Yang Yongnian,Wu Ze.EXPERIMENT INVESTIGATION ABOUT THE UNSTEADY AERODYNAMIC CHARACTERISTICS OF WINGS[J].Acta Aeronautica et Astronautica Sinica,1996,17(5):13-17. |
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| Authors: | Yu Xinzhi Yang Yongnian Wu Ze |
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| Institution: | 5.th Department, Northwestern Polytechnical University, Xi'an, 710072 |
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| Abstract: | The technical programme and measurement system of experimental investigation of unsteady dynamic characteristics are introduced. The unsteady lift characteristics of a delta wing with leading edge sweep angle 60° are investigated, when the wing is rapidly pitching up at incidence from 0° until 90°. The experimental results show that the maximum lift coefficient C y max and stall incidence are increased with increased pitch up rate, when the wing is rapidly pitching up. The influences of reduced frequency, average incidence, the oscillating amplitude and pitch axis location on the unsteady instantaneous force produced by oscillating wings are investigated too. |
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| Keywords: | wings oscillations unsteady flow dynamic characteristics |
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