Aplicação de restrições aeroelásticas em otimização multidisciplinar em projeto de aeronaves

Abstract

The market for remotely piloted aircraft is becoming more and more competitive. Because of that, it is essential to accelerate the creation of new models. In aircraft design, it is common to implement routines for multidisciplinary design optimization. This work presents a methodology for the evaluation of critical aeroelastic phenomena based on the geometric characteristics and structural parameters of the generated wings. Control reversal and flutter speeds are evaluated, as well as the control effectiveness. The values are compared to those of aviation technical standards, and then the aeroelastic feasibility of the aircraft is tested. Besides, the limits of aeroelastic restrictions on the influence of the analyzed objective function are tested. The results show that predicting structural phenomena in the early stages of design can lead to good results, but the implementation must be well developed in order not to eliminate aircraft that would meet all requirements. Also, it was possible to observe the influence of the structural rigidity of the wing in the conceptual design, in addition to obtaining more aerodynamically and structurally efficient aircraft with aeroelastic restrictions.