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航向控制是飞翼布局设计急需解决的关键技术之一。采用数值模拟方法,研究了小展弦比飞翼布局嵌入式阻力舵(SSD)的航向操纵及其耦合特性,针对滚转力矩大等耦合气动问题,提出了一种由嵌入式阻力舵与升降副翼构成的航向操纵组合舵面。研究了组合舵面的航向操纵规律及其耦合特性,揭示了其流动机理。研究结果表明:组合舵面具有很强的航向操纵和解耦能力,通过阻力舵偏度与升降副翼偏度的优化匹配,可显著减小或消除耦合滚转,使升力与俯仰特性得到恢复,很好地解决了小展弦比飞翼布局航向操纵及其耦合问题,具有舵面少、效率高等特点,是无尾布局航向控制的有效手段,应用前景广阔。
Heading control is one of the key technologies urgently needed to solve the layout design of flying wings. A numerical simulation method is used to study the heading control and coupling characteristics of an embedded resistance rudder (SSD) with small aspect ratio flying wing layout. In view of the coupled aerodynamic problems such as large rolling torque and the like, Aileron composed of course control combined rudder. The heading control law and coupling characteristics of the combined rudder are studied and the flow mechanism is revealed. The results show that the combined rudder has strong heading control and decoupling ability. By optimizing the matching between the resistance rudder deflection and the lifting aileron deviation, the coupling roll can be significantly reduced or eliminated, and the lift and pitch characteristics are recovered , Which solves the problem of small aspect ratio flying wing layout heading control and its coupling problem with less rudder surface and high efficiency and is an effective means of heading control with no tail layout and has wide application prospect.