Akademik Veri Yönetim Sistemi
Journal of innovative engineering and natural science (Online), cilt.5, sa.1, ss.371-385, 2025 (Hakemli Dergi)
Aeroelasticity involves the study of the interaction among aerodynamic, inertial, and elastic forces, where flutter manifests as a dynamic phenomenon, and divergence poses a static problem. Lightweight composite structures, that are lighter and stronger, have been studied in the current aviation industry for decades. In this study, aramid and glass plain woven single-ply composite wing structures were used in order to investigate aeroelastic interactions. The experimental and numerical comparisons of the aeroelastic responses of the wing structures were performed. Moreover, Ansys ACP was utilized to design the composite wing structure. The Fluid-Structure Interaction analysis was performed by using Ansys Fluent and Mechanical. The bending frequency responses of the wings were compared with each other at a different angle of attack (AoA) and different velocities (0 – 40 m/s). Operational Modal Analysis (OMA) was studied, and aerodynamic tests were performed using a subsonic wind tunnel to obtain the structural response of the composite wings. The flutter speed index (FSI) was determined for wings depending on the bending frequency. The aeroelastic results of computational and experimental methods for different composite wing structures were compared. The results show that the bending frequency of the aramid wing is higher than the glass wing. Also, the flutter speed index results for the aramid wing are in a safer region than the glass wing for different operational conditions.