分段式Gurney襟翼对某型靶机气动特性的影响

Effects of segmented Gurney flaps on the aerodynamics of a target drone model

研究了分段式Gurney襟翼对某型靶机气动力特性的影响,目的在于寻找在改善靶机纵向气动特性的同时兼顾横航向特性的方法。在靶机模型上加装长度为机翼半展长一半的平板Gurney襟翼进行风洞测力实验,在有/无侧滑角的条件下研究安装位置、襟翼高度对靶机纵向气动特性和横航向气动特性的影响,并与全长度Gurney襟翼的情况进行了对比。研究发现:半长度Gurney襟翼布置方案能够在靶机纵向力气动特性和横航向气动特性间取得性能平衡,因此,相比于全长度Gurney襟翼具有更好的应用前景。

The effects of partial Gurney flaps on the aerodynamics of a certain target drone were experimentally studied with the aim of optimizing both the longitudinal and the lateral aerodynamic characteristics.Flat-plate Gurney flap with the length of half of the spanwise length of the wing is mounted onto the tailing edge of the drone wing at different spanwise position,and the sideslip of model is considered in this investigation.The experimental results show that,comparing to the full-length Gurney flap,the half-length Gurney flap can achieve a balance between the longitudinal and the lateral aerodynamics： the deterioration of the yaw moment and the rolling moment can be significantly reduced at a negligible price of the efficiency lose of the lift-enhancing effect.Therefore,the half-length Gurney flap is a better choice for improving the aerodynamic performance of the investigated target drone.