Manifestation of ascendancy of extinction-reignition on sounding hybrid rocket using design informatics

Abstract

Information visualization have been performed for researching and developing a single-stage sounding launch vehicle with hybrid rocket engine by using design informatics; it has three points of view: problem definition, optimization, and data mining. The primary objective of this study is to reveal extinction-reignition ascendancy, which is one of the beneficial points of hybrid rocket, for expanding downrange and duration in the lower thermosphere. Swirling-flow oxidizer is furnished with solid fuel; we adopt polypropylene for solid fuel and liquid oxygen for oxidizer. A multidisciplinary design optimization was implemented by using a hybrid evolutionary computation; data mining was carried out by using a scatter plot matrix to efficiently perceive the entire design space. It is consequently revealed that extinction-reignition extends duration although it does not provide any effect on expanding downrange. Scatter plot matrix results express physical mechanisms of design-variable behaviors for the objective functions and also the roles of the design variables via bird's-eye visualization of the entire design-space constitution.