大展弦比飞翼布局飞机新型操纵面设计

Design of innovative control surfaces of flying wing aircrafts with large ratio aspect

大展弦比飞翼布局飞机取消常规布局的安定面和操纵面,本体的动态特性出现许多不足.介绍了在该新布局飞机上采用的升降副翼和开裂式方向舵等新型操纵面的气动特点,并在计算空气动力学的基础上分析了其三轴控制效率.引进舵容量的概念提出了操纵面的参数化设计方法,基于飞机的可控性对各新型操纵面的操纵效率需求进行了评估,最终对某型飞机的操纵面初步设计进行了修正.研究结果为飞翼布局飞机的操纵面设计提供了一套实用的方法.

Because the flying wing aircraft with large aspect ratio cancels the traditional stabilizers and control surfaces which are used in traditional configuration, many disadvantages of dynamic characteristic arise. The aerodynamics characteristic of the innovative control surfaces which are implemented on the flying wing aircraft with large aspect ratio were introduced, and elevon and split rudder were involved. And the control effects on three axis were analyzed basing on computetional fluid dynamics（CFD） method. The concept of control volume was imported to introduce parameters-based method of control surfaces design, The control effect requirements of the control surfaces were also evaluated. The original design of certain aircraft＇s control surfaces was modified. An practical suit of steps for control surfaces design which can be used in flying wing aircraft with large aspect ratio has been provided.