某支线飞机超临界机翼设计研究

文章在翼身组合体构形下,采用面向机翼的精细修形设计方法针对某支线飞机进行了超临界机翼设计.由于支线飞机机翼面积较小,在满足气动性能的前提下,能否满足结构设计的要求就成为本次修形设计所考虑的主要因素.设计实践表明,在合理的设计思想指导下,当初始外形与设计目标相差较大时,采用渐近修形设计技术仍然可以得到比较满意的结果.

Supercritical Wing Redesign for Regional Jet Aircraft

We aim to explore accomplishing the redesign very quickly even when the existing wing configuration is quite far from meeting the design objectives. Subsection 1.1 of the full paper briefs the WBVS(Wing/Body Viscous Simulation) code, which is based on the Euler/boundary layer interaction concept, and uses it to obtain the aerodynamic performance of the wing/body combination. Subsection 1.2 briefs the geometry modification technique taken from Ref. 1 and uses it to obtain a satisfactory design result by updating a baseline wing. Subsection 1.3 describes what the authors think an experienced designer would go about redesigning the wing. Finally section 2 gives a numerical example to show the effectiveness of the very preliminary results of our exploration. In the example, Mach number is 0.78 and lift coefficient is 0.54. Fig.3 of the full paper presents the results of eight consecutive modifications of a supercritical wing configuration and the results show that our very preliminary procedure can still give fairly satisfactory results quite quickly even when the existing wing configuration is quite far from meeting the design objectives.