| 鸭式旋翼/机翼飞行器转换末段气动特性 |
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| 引用本文： | 李毅波,马东立,牛凌宇.鸭式旋翼/机翼飞行器转换末段气动特性[J].北京航空航天大学学报,2011,37(3):311-315. |
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| 作者姓名： | 李毅波 马东立 牛凌宇 |
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| 作者单位： | 北京航空航天大学,航空科学与工程学院,北京,100191;北京系统工程研究所,北京,100101 |
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| 基金项目： | 武器装备预研重点基金资助项目 |
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| 摘 要： | 采用数值模拟方法研究鸭式旋翼/机翼(CRW,Canard Rotor/Wing)飞行器在转换过程末段,旋翼转速极低时全机气动特性变化规律及其产生原因.给出了旋翼旋转一周时,全机气动力、气动力矩、焦点位置变化规律,对此布局形式,转换过程末段全机升力、阻力变化幅度可达10.7%,3.7%,焦点可移动0.6 m.研究显示:旋翼处于前后不对称流场及旋翼处于不同方位角时对机体的不对称干扰是气动力与气动力矩变化原因,旋翼与平尾升力线斜率变化、旋翼自身焦点位置变化导致了全机焦点移动.
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| 关 键 词： | 鸭式旋翼/机翼飞行器 气动特性 流场干扰 飞行模式转换 |
| 收稿时间： | 2010-07-14 |
Aerodynamic characteristic of canard rotor/wing aircraft in conversion |
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| Li Yibo,Ma Dongli,Niu Lingyu.Aerodynamic characteristic of canard rotor/wing aircraft in conversion[J].Journal of Beijing University of Aeronautics and Astronautics,2011,37(3):311-315. |
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| Authors: | Li Yibo Ma Dongli Niu Lingyu |
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| Institution: | 1. School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Beijing System Engineering Institute, Beijing 100101, China |
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| Abstract: | The aerodynamic characteristics and mechanism of canard rotor/wing(CRW) aircraft during conversion from rotary to fixed-wing flight was numerically investigated.The variation of forces,moments and aerodynamic center with respect to rotor position are presented,the amplitude of lift,drag and aerodynamic center for this configuration in conversion can reach 10.7%,3.7% and 0.6 m separately.The investigation shows that the cause of forces and moments variation is the asymmetry flow field in rotary plane and asy... |
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| Keywords: | canard rotor/wing(CRW) aircraft aerodynamic characteristic flow interference flight mode conversion |
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