摘要
旋翼/涵道/风扇组合构成的升力系统,是一种结构紧凑、新颖、操纵较简易的垂直起降飞行器的升力系统。由于旋翼和风扇、旋翼和涵道、风扇和涵道之间等存在相互气动干扰,尤其是在前飞状态下,涵道风扇同时受到旋翼尾流和前方来流的共同作用,流场十分复杂,给该升力系统气动力的分析与预估带来很大困难。本文提出了一种确定旋翼/涵道/风扇组合升力系统气动力的理论分析方法,并通过理论与实验结果的比较,验证本文所述理论方法的有效性。
Rotor/duct/fan is a compact and innovative lift system for vertical take off and landing （VTOL） aircraft. However, the flow field is very complicated around the system due to the aerodynamic interactions among the rotor, the duct and the fan, particularly the effects of rotor wake and the coming air on the ducted fan in forward flight. This paper proposes a theoretical analysis method to determine the aerodynamic characteristics of the system in the forward flight. Compared the theoretic results with the experimental data, the theoretical method is proved to be effective.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2008年第5期571-576,共6页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
旋翼
涵道
风扇
升力系统
气动特性
rotors
ducts
fans
lift system
aerodynamic characteristics
