Multi-objective design optimisation of axisymmetric scramjet nozzle and external components considering static stability by using surrogate-assisted evolutionary algorithms
Hideaki Ogawa, Melrose Brown, Russell Boyce, Ray Tapabrata · 2011
A design study with multiobjective optimisation and stability analysis is performed for the nozzle and external geometry of an axisymmetric scramjet, aiming to achieve both high engine efficiency and vehicle stability while ensuring room for instrumentation. Population-based optimisation with surrogate-assisted evolutionary algorithms is performed for maximum thrust and forward C.G. positioning. Fin drag is estimated from the fin area required for vehicle stabilisation.