Deployment Impact Experiment and Dynamic Analysis of Modular Truss Antenna

Abstract

The deployment of a modular truss antenna reflector is relied on the driven energy of the springs between the components of the structure. The deployment process is characterized by fast speed and large impact. In order to study the impact characteristics of antenna deployment on the boundary, the deployment dynamic analysis of a modular truss antenna reflector is carried out. The deployment impact experiment is performed to obtain the impact forces of the reflector on the boundary. The dynamic model of the modular truss reflector is modified according to the experiment results. The dynamic analysis of a satellite with an arm and a modular truss reflector is conducted by using the modified reflector model. The dynamic behavior of the satellite in orbit during the modular truss antenna reflector deployment is predicted.

Dynamic Behavior of Satellite and Its Solar Arrays Subject to Large-Scale Antenna Deployment Shock

“…The results show that nonsynchronous deployment phenomena caused by the structural flexibility and the decay of the driving force should be considered in the design of the hoop truss antenna. Zheng et al [24] built a dynamical model of a satellite during the spring-driven deployment of a truss antenna, but the simulation error of the peak shock force can reach 95%, and the error analysis of the shock force and the moment vs. time curves were not involved.…”

Research on factors affecting the assembly accuracy of deployable arms

“…The deployable arm assembly operation mainly uses gravity unloading devices on the ground to simulate the space environment, which is different from real space [4]. And because of the characteristics of lightweight and low strength, deformation will occur when the assembly accuracy is low [5].…”