Design of liquid-propellant engine using collaborative optimization and evolutionary algorithms

作者：Darabi Hossein^*; Roshanian Jafar; Zare Hadi

来源：Proceedings of the Institution of Mechanical Engineers - Part G: Journal of Aerospace Engineering , 2015, 229(2): 232-242.

DOI：10.1177/0954410014529423

• Multidisciplinary design optimization
• response surface methodology
• liquid propellant
• bi-level optimization

Multidisciplinary design optimization is one of the modern design methods. It was developed in several different structures and used to solve some of the theoretical and applied problems. Collaborative optimization is one of the structures of bi-level multidisciplinary design optimization. It comprises system level and discipline level, which is used to solve engineering complex problems. Collaborative optimization structure maximizes options of discrete disciplines and provides a mechanism for coordinating design problem at system level. The present research discusses capability of the collaborative optimization method to solve multidisciplinary problems aiming at reducing the weight of a liquid-propellant system. It is realized by implementing a propellant system design comprising an engine and consumption of fuel and oxidizer. To do this, we calculated engine parameters through response surface methodology. The calculation parameters were optimized by applying a response surface and an engine structure design in the collaborative optimization process at the same time in the form of combustion, geometry, and weight (structure) problems with the evolutionary algorithms. Finally, we compared the obtained results with the reference results and specified the optimization rate achieved for the values of variables. The values included pressure increase of combustion, specific impulse, engine mass reduction, rate of fuel and oxidizer consumption with fixed thrust, and burn time.

• 出版日期2015-2