근사모델을 이용한 RAE2822 운용 불확실성 강건최적설계

ROBUST DESIGN OPTIMIZATION OF RAE2822 AIRFOIL UNDER OPERATIONAL UNCERTAINTY USING METAMODEL

In the view of robust design optimization, RAE2822 airfoil was designed to achieve not only the maximum lift-to-drag ratio but also insensitivity of that. While the RAE2822 is flying at the cruise speed, Mach variation is considered as the operational uncertainty. In order to explore the design space, metamodels were introduced instead of consecutively computing the gradient. Also a metamodel was used to represent the sigma space. Using the metamodel, an optimum value was searched in the view of global optimization.