Particle beam damper
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Particle dampers are utilized to damp the fundamental modes of vibration of two antennae mounted at the tip end of cantilever beams. The damper is composed of a closed container which is partially filled with metallic particles. The damper is bolted near the tip of the booms where the amplitude of vibratory motion is greatest. It is shown experimentally that significant damping can be obtained with this very simple and low cost device.