Industrial implementation of the MBSE applied to design of an aircraft landing gear: current issues, solutions and tools

Design of safety critical systems currently faces an increasing complexity of layout and requires a full traceability of product development. The Model-Based Systems Engineering (MBSE) allows reducing complexity, while supporting the product design by a suitable framework and an effective methodology. It drives designer to define the so-called Digital Twin of product. Nevertheless, the conceptual stage of design might still suffer an arbitrariness, being linked to operator, and the effectiveness of modelling activity might be affected by system complexity. Arbitrariness can be avoided by automating the requirements elicitation, by resorting, for instance, to the NASA’s FRET (Formal Requirement Elicitation Tool) and structuring the requirement analysis. System complexity can be decomposed by resorting to two levels of modelling, namely the ‘sizing model’ for preliminary trade-off and definition of system layout, and the ‘dynamic system model’ to investigate deeper its performance. Those approaches are applied to design of a landing gear of a commercial aircraft, by analysing those critical issues in implementing the MBSE and demonstrating the effectiveness of proposed approaches