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Effect of nose tip on wing rock of slender delta wing

  • Saifur Rahman Bakaul
  • , Yankui Wang*
  • , Guangxing Wu
  • , Qureshi Humayun
  • *此作品的通讯作者
  • Beihang University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The root cause of wing rock is investigated by examining two slender delta wings (70° and 85° sweep back angle) in wind tunnel using force measurement, pressure measurement and PIV techniques. The results show presence of asymmetric flow at 20° angle of attack and initiation of wing rock at the same point for 85° model while there is neither asymmetric flow nor wing rock for 70° model suggesting close relation of flow asymmetry with wing rock. Investigation with three apparently identical nose sections reveals that the asymmetry comes from the area very close to the wing tip. This asymmetric flow causes the vortices to interact in a complex way resulting in wing rock when the vortices are in close proximity (such as for 85° model), which is not the case when the vortices are 'comparatively away' (such as 70° model) from each other.

源语言英语
主期刊名Mechanical and Aerospace Engineering
178-183
页数6
DOI
出版状态已出版 - 2012
活动2012 3rd International Conference on Mechanical and Aerospace Engineering, ICMAE 2012 - Paris, 法国
期限: 7 7月 20128 7月 2012

出版系列

姓名Applied Mechanics and Materials
232
ISSN(印刷版)1660-9336
ISSN(电子版)1662-7482

会议

会议2012 3rd International Conference on Mechanical and Aerospace Engineering, ICMAE 2012
国家/地区法国
Paris
时期7/07/128/07/12

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