An automated aeroelastic performance prediction method in time domain for transonic aeroelastic tailoring

Abstract

Due to fuel efficiency and advanced aerodynamic, structural concern, more and more composite materials used in aircraft desgin. In aeroelastic tailoring techniques, in order to meet the requirements of aeroelastic performance, the parameters of the composite structure need to be modified repeatedly, the aeroelastic tailoring have to be reconstructed. However, these reconstruction and aeroelastic performance evaluation procedures take a considerable time and labour, and greatly increasing the time cost of the aircraft design. To develop a more efficient composite wing aeroelastic tailoring method, starting with improving the efficiency of aeroelastic performance evaluation, this paper propose an automated aeroelastic performance evaluation method for aeroelastic tailoring by introducing the structural dynamic reanalysis method. The improved AGARD 445.6 composite wing was employed to verify the validity and accuracy of the proposed automated method. The results show that the proposed method can not only accurately predict the aeroelastic response of the structure, but also because avoid a large number of artificial modification, greatly improving the automation degree and efficiency of transonic composite structure aeroelastic tailoring.