Research on the Method of Constructing a Meta-model for the Civil Aircraft Design Process

Civil aircraft design is a complex systems engineering practice involving multi-disciplinary coupling of aerodynamics, structure, avionics, control, etc., multiple solutions in parallel and multiple iterations. How to decouple the design process of civil aircraft, build design models from multiple perspectives and standardize the underlying description of design models has gradually become the key to promoting the further development of civil aircraft design. To address the practical problems such as the difficulty of decoupling the civil design process, the lack of theoretical support for the establishment of multi-perspective heterogeneous models, and the lack of consistency in the underlying description of design models, the method of constructing a meta-model for the civil aircraft design process is proposed. Firstly, under the guidance of MBSE methodology and relying on the authoritative source of truth centered on models and data, the civil aircraft design process driven by requirement and based on the design logic of ‘requirement-function-logic-physic’ is sorted out in detail. Secondly, based on analyzing the implementation logic and design data model of the top-level design process of civil aircraft, a perspective model of the concept definition layer, function description layer, and system implementation layer is proposed and constructed for the civil aircraft design process, which decouples the civil aircraft design process from multiple perspectives. Thirdly, the domain meta-model (DMM) is constructed at each level of the civil aircraft design by selecting and expanding the elements in the unified architecture framework (UAF) from different perspectives. Finally, the key concepts in each level of DMM are analyzed to further clarify the main lines of civil aircraft design, providing a methodological basis for the construction of metamodels oriented to the civil aircraft design process, and providing support for the establishment of heterogeneous models in multiple disciplines from different perspectives.