共轴双旋翼悬停地面效应气动特性分析

V211.52; 基于时间步进算法建立了适用于共轴双旋翼气动特性分析的旋翼自由尾迹模型,并采用面元法对水平和倾斜地面效应影响下共轴双旋翼系统气动特性进行了研究.在建模的过程中,采用Weissinger-L一阶升力面模型模拟了桨叶的三维效应,并充分考虑了旋翼/旋翼和旋翼/地面之间的气动干扰.通过与尾迹几何和诱导速度试验数据的对比,验证了计算模型的可行性.在此基础上,对共轴双旋翼在地面效应影响下的旋翼尾迹几何形状、流场诱导速度矢量分布和上下两旋翼桨叶的拉力系数分布进行了计算及分析.结果表明,悬停状态下,共轴双旋翼上下旋翼间存在强烈的气动干扰,且地面的影响使旋翼尾迹涡线径向扩展且向上卷起,对共轴双旋...

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Published in南京航空航天大学学报 Vol. 47; no. 2; pp. 266 - 274
Main Authors 覃燕华, 朱清华, 邵松
Format Journal Article
LanguageChinese
Published 南京航空航天大学直升机旋翼动力学国家级重点实验室,南京,210016 2015
Subjects
气动干扰
ground effect
自由尾迹
面元法
panel method
地面效应
aerodynamic interference
共轴双旋翼
free-wake
coaxial rotors
Online AccessGet full text
ISSN1005-2615
DOI10.16356/j.1005-2615.2015.02.013

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Abstract V211.52; 基于时间步进算法建立了适用于共轴双旋翼气动特性分析的旋翼自由尾迹模型,并采用面元法对水平和倾斜地面效应影响下共轴双旋翼系统气动特性进行了研究.在建模的过程中,采用Weissinger-L一阶升力面模型模拟了桨叶的三维效应,并充分考虑了旋翼/旋翼和旋翼/地面之间的气动干扰.通过与尾迹几何和诱导速度试验数据的对比,验证了计算模型的可行性.在此基础上,对共轴双旋翼在地面效应影响下的旋翼尾迹几何形状、流场诱导速度矢量分布和上下两旋翼桨叶的拉力系数分布进行了计算及分析.结果表明,悬停状态下,共轴双旋翼上下旋翼间存在强烈的气动干扰,且地面的影响使旋翼尾迹涡线径向扩展且向上卷起,对共轴双旋翼下旋翼拉力产生明显的影响.
AbstractList V211.52; 基于时间步进算法建立了适用于共轴双旋翼气动特性分析的旋翼自由尾迹模型,并采用面元法对水平和倾斜地面效应影响下共轴双旋翼系统气动特性进行了研究.在建模的过程中,采用Weissinger-L一阶升力面模型模拟了桨叶的三维效应,并充分考虑了旋翼/旋翼和旋翼/地面之间的气动干扰.通过与尾迹几何和诱导速度试验数据的对比,验证了计算模型的可行性.在此基础上,对共轴双旋翼在地面效应影响下的旋翼尾迹几何形状、流场诱导速度矢量分布和上下两旋翼桨叶的拉力系数分布进行了计算及分析.结果表明,悬停状态下,共轴双旋翼上下旋翼间存在强烈的气动干扰,且地面的影响使旋翼尾迹涡线径向扩展且向上卷起,对共轴双旋翼下旋翼拉力产生明显的影响.
Author 邵松
覃燕华
朱清华
AuthorAffiliation 南京航空航天大学直升机旋翼动力学国家级重点实验室,南京,210016
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Author_FL Qin Yanhua
Shao Song
Zhu Qinghua
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DocumentTitle_FL Aerodynamic Characteristics Analysis for Hovering Coaxial Rotors in Ground Effect
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Keywords 气动干扰
ground effect
自由尾迹
面元法
panel method
地面效应
aerodynamic interference
共轴双旋翼
free-wake
coaxial rotors
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PublicationTitle_FL Journal of Nanjing University of Aeronautics & Astronautics
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Snippet V211.52; 基于时间步进算法建立了适用于共轴双旋翼气动特性分析的旋翼自由尾迹模型,并采用面元法对水平和倾斜地面效应影响下共轴双旋翼系统气动特性进行了研究.在建模的过...
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Title 共轴双旋翼悬停地面效应气动特性分析
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