MDO approach for engine nozzle design

A multidisciplinary design optimization (MDO) approach is developed and applied to engine nozzle design based on integrated simulation with multi-criteria trade off analysis about nozzle thrust and mass. A robust interdigitation design methodology combining design of experiments and multiple optimization algorithms embodied in iSIGHT software is investigated sequentially during the design optimization process. The linear weighted multi-objective optimization models with various design variables and constraints are set up. The results show significant improvements. It demonstrates the feasibility and applicability of the MDO approach for nozzle design.