大型飞机铰链下垂前缘多段翼型气动优化设计与研究

随着增升装置的发展,新型商用飞机机翼内侧采用了结构简单的铰链下垂前缘,与使用最多的前缘缝翼相比,它具有减阻降噪,提高升阻比等优点。针对大型飞机铰链下垂前缘翼型进行了气动优化设计及数值研究。首先设计出铰链下垂前缘的二维翼型,然后通过iSIGHT平台对翼型进行气动优化,分析铰链下垂前缘翼型的低速气动特性,并且得出最佳翼型,最后与前缘缝翼翼型的气动性能进行对比,说明使用铰链下垂前缘的可行性。

Aerodynamic Optimization Design and Research on the Hinged Droop-nose Multi-element Airfoil for Large Aircraft

With the development of high lift devices, hinged droop-nose with simple structure is used inside the wing of the new commercial aircraft. Compared to the most common slat, it can reduce drag and noise, improve lift-drag ratio and so on. In this paper,aerodynamic optimization design and computational investigation on the hinged droop-nose airfoil for large aircraft is studied. First, a two-dimensional airfoil for hinged droop-nose is designed.Then airfoil aerodynamic optimization through iSIGHT platform is conducted. The low speed aerodynamic characteristics of the hinged droop-nose airfoil are analyzed and the best airfoil is obtained. At last, compared with slat in terms of aerodynamic performance,and so the feasibility of the hinged droop-nose is verified.