ZERO GRAVITY SIMULATION DEVICE FOR SATELLITE DEPLOYABLE ANTENNA ASSEMBLY AND TEST

摘要

PURPOSE: A zero gravity simulation device for assembling and testing a deployable satellite antenna is provided to precisely measure and correct alignment while offsetting self-load due to the earth gravity of a deployable satellite antenna. CONSTITUTION: A zero gravity simulation device for assembling and testing a deployable satellite antenna comprises a triangular shaped frame(210), a first centroid moving unit(220), a second centroid moving unit(230), a third centroid moving unit(240), a connection frame(250), and a helium balloon(260). The frame is coupled with a satellite antenna. The first centroid moving unit is installed in one side of the frame to vary the centroid while slidingly moving along the side. The second centroid moving unit is installed in the first centroid moving unit to vary the centroid while slidingly moving to a direction vertical to the first centroid moving unit. The third centroid moving unit is installed at an angular point of the frame facing with one side of the frame where the first centroid moving unit is installed and varies the centroid while slidingly moving to the first centroid moving unit. One side of the connection frame is connected to the third centroid moving unit.