Title: Transonic Aeroelastic Analysis for Multidisciplinary Design Optimization Applications
Abstract: In this study, a methodology for a transonic aeroelastic analysis has been formulated which can be easily integrated into a Multidisciplinary Design and Optimization (MDO) framework. The method will be used within an MDO environment for a more accurate prediction of the flutter speed of truss-braced wing (TBW) aircraft which often operate at transonic conditions, as well as other conventional and unconventional configurations. The Leishman-Beddoes indicial functions are used to model the unsteady aerodynamics, linearized about the steady lift-curve slope and location of center of pressure. The Virginia Tech MDO group is generating a response surface for such steady aerodynamic inputs which will be used in the MDO environment for performing a linearized aeroelastic analysis. To reduce the large number of augmented states of the unsteady flow, a reduced-order model of the aerodynamic system is developed using the balanced realization technique with the socalled matched DC gains. Some preliminary validations have been performed to highlight the computational efficiency of the reduced order system as well as for benchmarking the aeroelastic analysis. Future results will contain further validations, and some MDO applications of the method will also be discussed.
Publication Year: 2016
Publication Date: 2016-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 3
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