Aerodynamic Modelling of Unmanned Aerial System through Nonlinear Vortex Lattice Method, Computational Fluid Dynamics and Experimental Validation - Application to the UAS-S45 Bàlaam: Part 2.

摘要

This paper presents a comparison of a new non-linear formulation of the classical Vortex Lattice Method and a Computation Fluid Dynamics analysis in predicting the aerodynamic behaviour of an Unmanned Aerial System. The Computation Fluid Dynamics analysis used structured grid, for the airfoil, study and unstructured grid obtained from a grid convergence study, for the entire Unmanned Aerial System, that are needed to predict the aerodynamic coefficients. The Spalart-Allmaras and the k-ω models were used as turbulence models. The results have shown a close agreement between the methods presents and have indicated that the new formulation is adequate for aerodynamic model estimation.