Extended 3D Class/Shape Transformation equations for multicomponent aircraft assemblies

摘要

The main restriction to the development of commercial supersonic transport (SST) is the noise intrinsic to sonic booms. Small changes to the outer mold line of an SST can lead to noise decrease for specific flight conditions. However, aeroacoustic performance improvement may not be maintained for off-design flight conditions. A concept to overcome this design dilemma is a morphing aircraft that changes shape to tune performance according to flight conditions. To accurately represent the geometry of a morphing aircraft as well as of already existing aircraft, a modified 3D Class/Shape Transformation (CST) method is proposed in this work. The schema is adapted according to the desired structure to be represented (e.g., fuselage and wing). Through boolean operations and analytical intersection calculations, parts are precisely combined to generate an assembly (e.g., aircraft). The tool is benchmarked utilizing the JAXA wing body. It is shown that it can accurately describe general SST concepts and possibly other geometries of interest.