Jackscrew Drive
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The 86-ton retractable roof at Starlight Theater consists of six stainless-steel-clad, cantilevered panels, which are 36 feet wide and 42 feet long. Each panel is rotated around a torque tube by a jackscrew drive system. The 50-ton jackscrew, powered by a 5-horsepower electric motor, extends to rotate the panel up to the open position, and retracts to rotate it back down to the closed position.
