LAUSR

Based on a quasi-steady mission in a vertical plane, this paper presents an analytical derivation to compute the fuel consumption sensitivity. Within the mission analysis simplifications required by this method, a wing aerostructural design problem that accounts for multiple flight conditions is proposed. Such graequdient-based optimization problem is presented for an Airbus A320 as a test case application. This test case efficiently couples the mission analysis to the aerostructural FEMWET analysis code via an online-generated parabolic drag polar. FEMWET uses a quasi-three-dimensional wing aerodynamic analysis coupled with a finite beam element method. The optimized solution yields a large-span wing in agreement with aerostructural design optimization literature.