Faulty Tree Analysis of the Deployment System of a Large Satellite Antenna

A study on the deployment reliability of a large satellite antenna with hoop-truss was presented in this paper and the key point was on the movement reliability of the deployment mechanism. To begin with, Firstly the movement principium of the large antenna was studied and the faulty tree of the deployment system was built by using the Faulty Tree Analysis method. Subsequently,the reliability model of the deployment mechanism and the probability calculating formulae of some base affairs were given,and upon which the system reliability was forecasted. The reliability analysis shows that preventing the deployment mechanism from a lack of enough kinetic moments and avoiding the blocking problems are important for improving the system reliability.