大型民机翼型变弯度气动特性分析与优化设计

doi:10.7527/S1000-6893.2015.0216

Abstract

Abstract:

In order to improve the aerodynamic efficiency with the change of lift coefficient and Mach number, the technology of variable camber wing has been applied to civil transport jet. Taking the airfoil of long-range wide body transport jet as a case study, the effects of variable camber on airfoil's aerodynamic performance and pressure distribution are investigated. By applying surrogate model, the relationships between airfoil camber and aerodynamic performance under different design conditions are built. Furthermore, an airfoil variable camber optimization method based on surrogate model is proposed. Testing cases show that the optimization method can predict best camber at given lift coefficient and Mach number, result in aerodynamic performance improvement. The proposed method can be applied to variable wing design in civil transport jet engineering.

Key words: supercritical design, airfoil, shock wave, transport aircraft design, variable camber, surrogate model, buffet

CLC Number:

V211

LIANG Yu, SHAN Xiaowen. Aerodynamic analysis and optimization design for variable camber airfoil of civil transport jet[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(3): 790-798.

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Aerodynamic analysis and optimization design for variable camber airfoil of civil transport jet

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