Modelling and Simulation on Multibody Dynamics for Vehicular Cold Launch Systems Based on Subsystem Synthesis Method

[摘要] The fast simulation of the vehicular cold launch system (VCLS) in the launch process is an essential requirement for practical engineering applications. In particular, a general and fast simulation model of the VCLS will help the designer to obtain the optimum scheme in the initial design phase. For these purposes, a system-level fast simulation model was established for the VCLS based on the subsystem synthesis method. Moreover, a comparison of the load of a seven-axis VCLS on the rigid ground through both theoretical calculations and experiments was carried out. It was found that the error of the load of the rear left outrigger is less than 7.1%, and the error of the total load of all the outriggers is less than 2.8%. Moreover, time taken for completion of the simulation model is only 9.5 min, which is 5% of the time taken by conventional algorithms.

[发布机构] School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing; 100191, China^1;Beijing Institute of Space Launch Technology, Beijing; 10076, China^2

[效力级别] 无线电电子学

[关键词] Conventional algorithms;Fast-simulation model;Modelling and simulations;Multi-body dynamic;Practical engineering applications;Simulation model;Subsystem synthesis methods;Theoretical calculations