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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/18911

Title: Aero-structural Optimization of Divergence-critical Wings
Authors: Moon, Scott Geoffrey
Advisor: Martins, Joaquim R. R. A.
Department: Aerospace Science and Engineering
Keywords: Optimization
Divergence
HANSA
Aerostructural
Issue Date: 15-Feb-2010
Abstract: This study investigates the use of the divergence speed as an additional constraint to a multi-disciplinary optimization (MDO) problem. The goal of the project is to expand the MDO toolbox by adding an aeroelastic module used where the aeroelastic characteristics present a possible safety hazard. This paper examines aeroelastic theory and MDO disciplines. The divergence constraint function is developed on a BAH wing. The optimization problem is executed on the HANSA HFB 320 transport jet using the FEAP structural solver and a Vortex Lattice Method as the aerodynamic solver. The study shows that divergence speed can function as a safety constraint but the stress constraints determine the optimum design. Furthermore, obtaining a true divergence constraint will require a finer mesh, a more efficient aerodynamic solver and non-finite difference approach to gradient determination. Thus, the addition of the divergence constraint does not yet directly benefit this MDO framework.
URI: http://hdl.handle.net/1807/18911
Appears in Collections:Master
Institute for Aerospace Studies - Master theses

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