Simulation Analysis On Recovery And Separation Of Rocket Booster

In recent years,with the continuous development and utilization of space by many countries,the research of rocket booster recovery technology has become a hot topic in the world.The recovery of rocket boosters can not only ensure the safety of ground personnel and buildings,but also obtain the valuable test data and reusable components so that rocket launch cost can be reduced.Therefore,it is of great significance to investigate the recovery of rocket booster.Firstly,according to the work procedure of booster recovery and separation system,the force of each part in the system is analyzed.And the mechanical model of booster recovery separation system is established based on assimilating the relevant literature.Furthermore,the aerodynamic characteristics of the booster is elaborated,and the aerodynamic data is calculated.Next,in order to facilitate the analysis of dynamic characteristics of booster recovery separation system,the basic hypotheses in terms of actual work situation are proposed,the dynamic equations aim at the booster recovery separation system are deduced,and the systemically dynamic simulation model is established via LMS software.Moreover,the establishment of geometric model,the creation of constraint and the application of load are elaborated by this paper.Then,regarding booster recovery separation system as research object,the whole motion procedure of system and change regulation of relevant motion quantity were acquired by simulating calculation the whole recovery and separation process with giving work condition.The influential factors of the initial velocity and attitude of booster,parachute relevant parameters,wind and so on which impacted on the process of recovery and separation are analyzed.Finally,the landing point error which caused by various random interferential factors appearing in the flight process of the booster parachute recovery system is analyzed in depth adopting Monte Carlo method.The handling methods aim to various interferential factors are listed and the systemically Monte-Carlo landing point simulation model is established,so that the distribution of landing point of booster is obtained,which can provide the foundation for the division of booster landing area.