【摘要】 火箭飞行过程伴随着质量、质心、惯性矩的变化和控制力的调整,其模拟仿真是个非常复杂的学术和技术问题.基于多体动力学软件Adams,建立火箭箭体的三维模型,编制火箭飞行过程仿真的流程控制子程序、重力变化子程序、控制力子程序和气动力函数,搭建火箭的飞行仿真平台,实现火箭飞行过程中的质量、质心变化的仿真,并且给出关键功能的验证和应用算例.更多还原

【Abstract】 The rocket flight simulation is a very complicated academic and technological problem because the flight process is accompanied with the change of mass,mass center change,inertia moment and the adjustment of control force. A multi-body dynamics simulation model for rocket flight is established using Adams. A 3D model of the rocket bodies is built firstly and some subroutines and functions are developed,in which the simulation process control subroutine,mass change subroutine,control force subroutine and aero-dynamic function are included. The flight simulation platform is built and the simulation results show that the change of mass,mass center change,acceleration are reasonably. Finally the key features are validated by some theoretical calculation data.更多还原