Abstract
Spaceplane, which is expected as an Advanced Space Transportation Vehicle, has a flight region so extensive that the flow field around the airframe is changed greatly. Since some complex interference between the spaceplane airframe shape and the flight trajectory through this flow field, both must be optimized during conceptual designing of the spaceplane. However, with existing research results and knowledge about spaceplane being so little, it is impossible to specify a suitable initial value during conceptual designing. Therefore, it is necessary to search for its solution automatically in the large solution space, and a designing tool for this problem has been in demand. We thus propose a designing tool using Genetic Algorithm (GA), which is an optimization method for global searching. In addition, the results of applying this tool to an integrated optimization problem of the airframe shape and flight trajectory of a spaceplane is also reported.
