Investigating aileron design for ultra-high aspect ratio wings

Ma, Yiyuan, Abouhamzeh, Morteza and Elham, Ali (2023) Investigating aileron design for ultra-high aspect ratio wings. In AIAA SCITECH 2023 Forum. American Institute of Aeronautics and Astronautics.. (doi:10.2514/6.2023-2102).

Abstract

The Strut-Braced Wing (SBW) is a promising configuration for achieving next-generation sustainable and fuel-efficient aviation goals by using a composite Ultra-High Aspect Ratio Wing (UHARW) design. UHARW is more flexible than conventional wings, so the aileron effectiveness is a key constraint in the design and optimization of UHARW to avoid aileron reversal. This paper presents an aileron design methodology for UAHRW design and optimization by integrating the aileron’s required roll moment into a coupled adjoint aerostructural optimization tool for the aeroelastic and aerostructural investigations of the SBW configuration. The aeroelastic optimization results show that it is necessary to take into account aileron design variables in aeroelastic optimization as the wing structural weight can be reduced further. The aerostructural optimization results show a significant performance improvement of the SBW aircraft with considering the aileron design variables. The optimized SBW with two ailerons has significantly lower fuel weight and MTOW than the optimized SBW with only one aileron design. For both cases, the optimizer significantly reduces the wing drag by weakening/removing shock waves.

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