Research on flight sequence modeling and collaboration of launch vehicles based on MBSE

To address issue of the inefficiency in collaborative design of launch vehicles flight sequences， a model-based systems engineering （MBSE） based methodology is proposed for modeling launch vehicles flight sequence and the collaborative design mechanism is investigated for such flight sequence within an MBSE framework. By focusing on a representative two-stage configuration and non-booster based launch vehicles， the organizational relationships are analyzed among distinct flight phases throughout the vehicle's life-cycle and a hierarchical architecture global scheme is presented for flight sequence modeling. For each hierarchy level， based on the structural composition of the sequence command skeleton， a meta-modeling approach is developed to establish elementary models of flight sequence command signals. On the basis of these elementary models， a comprehensive MBSE model based on the entire procedure of launch vehicles flight sequence is designed. Furthermore， oriented to the collaborative design strategy for flight sequence in the MBSE framework， the model distribution and merging mechanisms based cooperative design of flight time sequence is implemented. This work lays a foundation for the full-scale digital transformation of launch vehicles design processes.