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Effects of tip perturbation and wing locations on rolling oscillation induced by forebody vortices 被引量:8
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作者 Bing Wang Xue-Ying Deng Bao-Feng Ma Zhen Rong 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2010年第5期787-791,共5页
The wing rock motion is frequently suffered by a wing-body configuration with low swept wing at high angle of attack. It is found from our experimental study that the tip perturbation and wing longitudinal locations a... The wing rock motion is frequently suffered by a wing-body configuration with low swept wing at high angle of attack. It is found from our experimental study that the tip perturbation and wing longitudinal locations affect significantly the wing rock motion of a wing-body. The natural tip perturbation would make the wing rock motion of a nondeterministic nature and an artificial mini-tip perturbation would make the wing rock motion deterministic. The artificial tip perturbation would, as its circumferential location is varied, generate three different types of motion patterns: (1) limit cycle oscillation, (2) irregular oscillation, (3) equilibrium state with tiny oscillation. The amplitude of rolling oscillation corresponding to the limit cycle oscillatory motion pattern is decreased with the wing location shifting downstream along the body axis. 展开更多
关键词 Wing rock motion- Asymmetric vortices flow High angle of attack aerodynamics Nose tip perturbation
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