Caracterização e análise da dinâmica de uma aeronave monomotora em escala

Abstract

This work aims to study the characteristics of longitudinal stability and longitudinal derivatives of a single-engine aircraft of the model Cessna 182 in scale 1: 8,3. This scaled remote piloted aircraft is considered an UAV (Unmanned Aerial Vehicle) and is piloted through remote control. For this purpose, the geometric parameters of the scaled model are obtained from the physical model, then generating a 3D CAD model, which in turn is computationally simulated using two different tools, namely: Ansys Fluent® and Datcom. The computational results are compared with the aerodynamic and dynamic characteristics of the full-scale aircraft. The model analyzed in Ansys Fluent® software was statically stable in the longitudinal direction. The analysis between two different simulation methods also generated the calculation of the error between the computational model and the full-scale aircraft. Finally, the derivatives of longitudinal stability and the aircraft modes are analyzed, with their respective natural frequencies. For the dynamic stability analysis, the most critical longitudinal stability derivatives for the system were compared. The variation obtained by comparing the results of Ansys Fluent® with the full-scale aircraft ranged between 0,7 and 27%. For the analysis using the Datcom software, the variation in relation to the full-scale model was from 19% to 133%.