Comparison of partly coupled and fully coupled Fluid-Structural interactions of UAV wing

Abstract

Aircraft components are naturally elastic in nature and have their own natural frequency. Whenever the source frequency becomes equal to the object’s natural frequency, the objects may vibrate and deform and this might results in fluttering. The main objective of this article is to compare the fully coupled and partly coupled result of an unmanned aerial vehicle wing with combination of winglet. Modelling of structural and fluid domain is required to solve both fluid-structural interaction phenomena. The rectangular wing with elliptical winglet model has been analyzed at different altitude in 0.1 to 0.5 mach range using finite element analysis and computational fluid dynamics tools. The deformation and stress variation exists in a rectangular wing with elliptical winglet model caused by aero elastic effects. The resulting stress variation and structural deformation respect to the corresponding flow are fully studied and affirmed.