关键词: 商用航空发动机, 运行场景, 基于模型的系统工程, 可扩展标记语言, 功能架构, 物理建模

Abstract: According to the analysis of current Model-Based System Engineering(MBSE) design method,aiming at the complexity of commercial aeroengine development and the difficulty of interaction between requirements analysis and physical models in system design,a lifecycle operation scenario oriented MBSE design method was proposed.A lifecycle operation scenario oriented to MBSE design procedure was constructed to fully acquire the system requirements from the aspects of lifecycle operation,internal and external environment and state pattern.Based on eXtensible Markup Language (XML) format,the transformation technology between SysML model and Modelica model was studied,which could realize the transformation from functional model to physical model and support system function and performance design through the same framework.An integrated multi-disciplinary simulation for commercial aeroengine operation scenariosis was established to achieve closed-loop verification of commercial aeroengine development requirements.The ground starting scene of large bypass ratio turbofan aeroengine was used to verify the feasibility and effectiveness of the proposed method.

Key words: commercial aeroengine, operation scenario, model-based system engineering, extensible markup language, functional architecture, physical modeling