Multi-segment Class-Shape-Transformation (CST) for global design exploration

Now the class-shape function transformation parameterization method (CST) is a popular method for creating the shape. Disadvantage of the CST method is it hard to design a point close to the design condition and it hard to create the shape for the complicated geometry because it needs to use high order polynomial. This paper deals the multi-segment CST for creating the geometry to reduce the degree of polynomial and controlled the shape at the controlled point. The Genetic Algorithm (GA) was used to test the centerline spacecraft design problem that creates from the multi-segment CST. Four centerline spacecraft design problems were set to search the minimum drag.