飞翼布局无人航空器气动特性研究

Aerodynamics Characteristics Investigation for Flying Wing Uninhabited Aircraft

飞翼布局飞机取消了尾翼,拥有良好的气动、隐身特性,但操纵效率有所下降,需要在飞机设计过程中合理地布置操纵面,改善飞翼飞机在操纵性能上的缺陷,因此,飞翼飞机的操纵面不仅要提供足够的控制力,同时还要满足飞机的稳定性要求。对飞翼布局飞机的气动特性和基本操稳特性做理论分析,并利用试验做实际对比,研究飞机的气动特性,分析各操纵面的功能、操纵特性以及存在的问题,为增强飞机稳定性和设计增稳系统增加依据。

Flying wing configuration aircraft gets rid of tail in order to improve aerodynamics characteristic and reduces RCS（ Radar Cross Section）, but it also leads to the reduction of controlling efficiency. Control surfaces play an important role in the design of flying wing configuration aircraft. The logical control surfaces can ameliorate the limitation, provide enough control strength, and satisfy the requirement of the stability of flying wing aircraft. Aerodynamics characteristics and elementary stability and control of flying wing configuration aircraft were theoretically analyzed in this paper. The conclusion from the analyses is compared with the data got from some experiments to study aerodynamics characteristics of the aircraft, analysis the function, operation characteristics and existent problem of control surface. All this efforts add foundation for raising stability of the aircraft and design of the stability augmentation system.