Design of Active High Lift Wing Configurations Via Fluid-Structure Interaction Simulation

The wing of an active high lift aircraft configuration with an UHBR engine is structurally sized. The FEA details droop nose and flaps and uses loads from 3D CFD RANS simulations for the fully stressed design. The sizing yields a comparable skin thickness distribution compared to a similar wing configuration with a Turboprop engine. The differences in mass result mainly from the relatively high UHBR engine weight and the higher sweep angle. Furthermore the steady aeroelastic equilibrium is computed with a partitioned approach for the landing configuration at optimal circulation control. Flow separation is initiated at the end of the unprotected leading edge, propagating to the outboard main wing and aileron. The effect of the wing elasticity onto the aerodynamics is negligible due to the high stiffness of the UHBR configuration.