Structure design and performance evaluation of variable configuration truss-type satellite platform

To service the internal payload of communication satellite, according to the main frame structures and main bearing structures of traditional satellite platforms, six kinds of repetitive variable configuration truss-type satellite platform structures is proposed, and the main indexes, including mass, inertia change rate, utilization rate of fairing area, deployed surface area ratio, vibration frequency in folded and deployed state, equipment layout effect and complexity of deployable mechanism, for evaluating the performance of variable configuration satellite platform are put forward. Then the main indexes of those six satellite platform structures are analyzed, the weights of those indexes are obtained by analytic hierarchy process method, and a scheme with better comprehensive performance is selected using fuzzy synthetic evaluation method. The mobility of the deployable mechanism of the optimal scheme is 1. The satellite platform structure of the optimal scheme is detailed designed, and a prototype is manufactured to demonstrate the process of variable configuration.