PrandtlPlane wing-box least-weight design: a multi-scale optimisation approach

Marco Picchi Scardaoni , Enrico Panettieri , Marco Montemurro (1)

1 I2M - Institut de Mécanique et d'Ingénierie

The PrandtlPlane (PrP) aircraft wing-box least-weight design is presented in this work. This design problem is formulated as a constrained non-linear programming problem (CNLPP), by integrating static, buckling, fatigue and manufacturability requirements, under different loading conditions. The solution search is carried out by means of a suitable multi-scale optimisation (MSO) approach. The physical responses involved into the CNLPP formulation are evaluated at the wing-box architecture level (macroscopic scale) and at the stiffened panel level (component scale), as well. The scale transition is ensured by means of a suitable global-local (GL) modelling approach, while the CNLPP is solved by means of an in-house genetic algorithm. The effectiveness of the proposed approach is tested on the PrP wing-box structure, but the presented strategy can be easily extended to conventional aircraft wings.

Domaines: Optimisation et contrôle [math.OC]; Mécanique des solides [physics.class-ph]; Mécanique des structures [physics.class-ph]

Marco Picchi Scardaoni, Enrico Panettieri, Marco Montemurro. PrandtlPlane wing-box least-weight design: a multi-scale optimisation approach. Aerospace Science and Technology, 2020, ⟨10.1016/j.ast.2020.106156⟩. ⟨hal-02945531⟩