Structural optimization of lifting surfaces with divergence and control reversal constraints |
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| Authors: | K B Bowman R V Grandhi F E Eastep |
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| Affiliation: | (1) Air Force Wright Aeronautical Lab., Wright-Patterson Air Force Base, Ohio, USA;(2) Dept. of Mechanical Systems Engineering, Wright State University, Dayton, Ohio, USA;(3) Dept. of Aerospace Engineering, University of Dayton, Dayton, Ohio, USA |
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| Abstract: | In this paper, the static aeroplastic characteristics, divergence velocity, control effectiveness and lift effectiveness are considered in obtaining an optimum weight structure. Swept wing structures are used with upper and lower skins, spar and rib thicknesses, and spar cap and vertical post cross-sectional areas as the design parameters. The aerodynamic strip theory is used to derive the constraint formulations and aerodynamic load matrices. A Sequential Unconstrained Minimization Technique (SUMT) algorithm is used to optimize the wing structure to meet the desired aeroelastic constraints. |
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