An Aeroelastic Topology Optimization Approach for Adaptive Wing Design

Abstract

This paper presents a novel optimization approach for the design of mechanisms in morphing aircraft structures. The layout of the mechanism as well as the location and number of actuators and pivots are determined by an extended formulation of a material-based topology optimization. The design problem is modeled within an aeroelastic framework to directly assess aerodynamic performance criteria while optimizing the overall mechanized system. The proposed methodology is illustrated through the design optimization of a quasi 3-D section of an adaptive wing, where the approach is compared to a conventional two-step approach of rst optimizing the aerodynamic shape for one or multiple igh t conditions, then nding the mechanism that leads to this shape. The comparison shows that the interactions between o w, structural deformation, mechanism, and actuator must be considered to nd the optimal solution.