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system architecture optimization an open source multidisciplinary aircraft jet engine architecting problem

Authors: Bussemaker, Jasper; De Smedt, Thibault; La Rocca, Gianfranco; Ciampa, Pier Davide; Nagel, Björn;

system architecture optimization an open source multidisciplinary aircraft jet engine architecting problem

Abstract

View Video Presentation: https://doi-org.tudelft.idm.oclc.org/10.2514/6.2021-3078.vidDecisions regarding the system architecture are important and taken early in the design process, however suffer from large design spaces and expert bias. Systematic design space exploration techniques, like optimization, can be applied to system architecting. Realistic engineering benchmark problems are needed to enable development of optimization algorithms that can successfully solve these black-box, hierarchical, mixed-discrete, multi-objective architecture optimization problems. Such benchmark problems support the development of more capable optimization algorithms, more suitable methods for modeling system architecture design space, and educating engineers and other stakeholders on system architecture optimization in general. In this paper, an engine architecting benchmark problem is presented that exhibits all this behavior and is based on the open-source simulation tools pyCycle and OpenMDAO. Next to thermodynamic cycle analysis, the proposed benchmark problem includes modules for the estimation of engine weight, length, diameter, noise and NOx emissions. The problem is defined using modular interfaces, allowing to tune the complexity of the problem, by varying the number of design variables, objectives and constraints. The benchmark problem is validated by comparing to pyCycle example cases and existing engine performance data, and demonstrated using both a simple and a realistic problem formulation, solved using the multi-objective NSGA-II algorithm. It is shown that realistic results can be obtained, even though the design space is subject to hidden constraints due to the engine evaluation not converging for all design points. Flight Performance and Propulsion

Countries
Germany, Netherlands
Keywords

Model Based System Engineering, system architecting, mbse, mdo, jet engine design, Multidisciplinary Design Optimization, Aircraft Jet Engine

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