Numerical Simulation Based on CFD and Flight Dynamics for Morphing Body

Abstract

*† ‡ A numerical simulation code taking into account both fluid dynamics and flight dynamics has been developed to simulate the flight of low speed flying objects. As sample calculations to which the present code has been applied, a two-dimensional forced oscillation plate is first considered. This plate can generate thrust, so that it can move forward. Then, a three-dimensional object with a form of delta wing, which morphs like a swimming ray, is taken up. This object can generate thrust, but it can move either forward or backward. The effect of the fluid force on the motion of the delta wing is studied in detail, based on double CFDs, i.e., computational fluid dynamics (CFD) and computational flight dynamics, the results of which are discussed in this paper. The present method is promising to study the aerodynamics and flight dynamics of moving objects with shape morphing. Nomenclature p = pressure u = flow velocity t = time ρ = density ν =