摘要
斜置翼飞行器是一种通过改变扫掠角而能在亚声速、跨声速、超声速三个速度段都能获得最优效率的宽速域飞行器。根据斜置翼的设计需求,其基本翼型应该是超临界翼型,翼型选择应在考虑翼型最佳气动效率的同时兼顾翼型内部有效体积和操稳特性。基于以上选型标准,先从NASA超临界翼型族中选出5种超临界翼型,然后运用商业CFD软件Fluent对这5种超临界翼型的气动特性进行计算。最后通过对比分析这5种翼型的气动特性、几何参数和操稳特性,选择性能较优的NASA SC(2)-0714翼型作为斜置翼的基本翼型。
Oblique wing is a kind of a wide speed range aircraft which can achieve optimal efficiency in subsonic, transonic and supersonic flight by changing the sweep angle. According to the design requirments of the oblique wing, the best section of the oblique wing should be supercritical airfoil, in addition to the best efficiency, the effective volume and the stability of the airfoil should also be taken into account. Based on the above criterion, five supercritical airfoils were selected from the family of NASA supercriti- cal airfoils. Then the aerodynamic characteristics of the five supercritical airfoils were calculated with the commercial CFD software Fluent. Eventually, NASA SC（2）-0714 is ascertained as the best selection for the oblique wing by comparing the aerodynamic characteristics, geometry parameters and the longitudinal stability of the five supercritical airfoils.
出处
《力学季刊》
CSCD
北大核心
2013年第3期361-366,共6页
Chinese Quarterly of Mechanics
