适合机动飞行的旋翼气动模型研究

徐进; 高正

适合机动飞行的旋翼气动模型研究

徐进,
高正

南京航空航天大学直升机旋翼动力学实验室, 南京 210016

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出版历程
- 收稿日期: 2006-12-07
- 修回日期: 2007-03-28
- 刊出日期: 2008-01-28

Study of aerodynamic model for the maneuvering rotor

XU Jin,
GAO Zheng

Laboratory of Rotorcraft Aeromechanics, Nanjing University ofAeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 为改善对旋翼空气动力他轴响应的预测,在旋翼气动模型中引入时变的尾迹弯曲参数K_R,以体现机动旋翼的尾迹畸变效应.与已有方法相比,该模型的计算结果更为接近实验数据.还建立了动态尾迹畸变模型,并分析了计入尾迹收缩效应的必要性.结果表明,为了正确计算机动飞行中的旋翼气动力,特别是操纵的他轴响应,应当在模型中采用随状态变化的尾迹弯曲参数K_R.
- 航空、航天推进系统 /
- 机动飞行 /
- 旋翼 /
- 尾迹畸变 /
- 尾迹弯曲参数 /
- 他轴响应
Abstract: To improve the prediction of the rotor's off-axis aerodynamic response,the wake distortion effect of maneuvering rotor was studied with the introduction of time-accurate wake curvature parameter(K_R) into the maneuvering rotor model.As compared with existing approaches,the computed results from this model are more close to the test data.Besides,a dynamic wake distortion model was constructed,while the necessity of incorporating the wake contraction effect was analyzed.The research results show that: the operating-state-dependent(K_R) shall be applied to aerodynamic models in order to calculate accurately the rotor aerodynamic forces and moments,especially for off-axis response.
- aerospace propulsion system /
- maneuver /
- rotor /
- wake distortion /
- wake curvature parameter /
- off-axis response

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参考文献(10)

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