Dynamic Analysis of Reflector Structure for a Solid-Surface Deployable Antenna

Abstract

Solid-surface reflector is widely used in satellite aperture antenna based on its high surface accuracy. Compared with traditional single-blade solid-plane antennas which rotate along orthogonal two-axis, single-axis-rotation antenna greatly reduces the number of kinematic pairs and improves the deploying reliability of such deployable structures. This paper establishes a deploying dynamic model and a finite element model based on a 10-meter-aperture single-axis-rotation deployable surface antenna. The feasibility of the antenna design is verified by ADAMS dynamics simulation, and the folded-state in launch vehicle and the deployed-state in orbit service are also studied by ANSYS. The natural frequencies and vibration modes of the structure in two states are obtained, and the dynamic characteristics meet the requirements. It has an important reference value for design analysis and parameter research for this kind of solid-surface deployable antenna.