翼身融合布局飞机总体参数对气动性能的影响

翼身融合布局是一种极具潜力和竞争力的新布局型式,该种布局型式飞机的总体参数对其自身的气动性能有重要影响,有必要开展相关的影响规律研究。本文基于某一翼身融合布局飞机概念方案,采用快速数值方法模拟了不同气动外形的高速流动,分析了总体参数(主要包括机翼面积、展弦比和外翼前缘后掠角)等对飞机高速气动性能的影响。结果表明,可以通过改变展弦比和机翼面积显著地改善气动性能,但未发现外翼前缘后掠角的改变与气动性能的改善有明显的关联。

Influence of overall configuration parameters on aerodynamic characteristics of a blended-wing-body aircraft

As an potential and competent contender,overall configuration parameters of Blend-Wing-Body(BWB)aircraft play an important role in its aerodynamic characteristics.So it is necessary to reveal the trends of the influence of overall parameters on its performance.In this paper,the influence of some aerodynamic configuration parameters,including trapezoidal wing area,aspect ratio,sweep angle of outer-wing leading edge,on the high-speed aerodynamic characteristics of a conceptual BWB civil aircraft was analyzed using fast numerical simulation method.Results show that aspect ratio and trapezoidal wing area are of particular significance in the improvement of aerodynamic performance while variation on sweep of out-wing leading edge leads to slight performance change and does not identify a clear changing relationship.