Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/153987
Title: AERODYNAMIC SHAPE OPTIMIZATION OF AN UNDER-WING STORE USING GAPPY POD
Authors: MEN HAN
Keywords: under-wing store
geometry optimization
aerodynamic optimization
B-spline curves
rational Bézier curves
evolutionary algorithm
POD surrogate model
Issue Date: 2006
Citation: MEN HAN (2006). AERODYNAMIC SHAPE OPTIMIZATION OF AN UNDER-WING STORE USING GAPPY POD. ScholarBank@NUS Repository.
Abstract: The primary objective of this research work was to develop preliminary designs of aircraft under-wing store geometry to achieve improved aerodynamic performance in the transonic/subsonic regime. In this work, both the geometry optimization and aerodynamic optimization have been performed for the targeted store. We first proposed a parametric geometry representation using B-spline curves along longitudinal cross sections, and rational Bézier curves along latitudinal cross sections. The geometry optimization is performed with nonlinear constraints on center of gravity location and controlled volume, to minimize the moment of the shape. The aerodynamic optimization is then realized using evolutionary algorithm, with Gappy POD surrogate model for fitness evaluation.
URI: https://scholarbank.nus.edu.sg/handle/10635/153987
Appears in Collections:Master's Theses (Restricted)

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