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Shape Optimization Of Busemann-Type Biplane Airfoil For Drag Reduction Under Nonlifting And Lifting Conditions Using Genetic Algorithms, Yi Tian
McKelvey School of Engineering Theses & Dissertations
The focus of this thesis is on the shape optimization of the Busemann-type biplane airfoil for drag reduction under both nonlifting and lifting conditions using genetic algorithms. The concept of the Busemann-type biplane airfoil was first introduced by Adolf Busemann in 1935. Under its design condition at a specific supersonic flow speed, the Busemann biplane airfoil eliminates all wave drag due to its symmetrical biplane configuration; however it produces zero lift. Previous research has shown that the original Busemann biplane airfoil design has a poor performance under off-design conditions as well. In order to solve this problem of zero lift …