ABSTRACT
EXAMPLE: A large turntable, depicted below, sits on a raked deck. Scenery for the show beyond the turntable will only be props, with the heaviest unit being a 200 lb throne that will sit in the center of the small circle. A cast of 15 may all appear in the throne scene, but rehearsals have not begun, so their blocking is unknown. The turntable is mounted on casters having a . A motion controller will set acceleration and decelerations times to as little as 2 seconds, and the turntable’s top speed will be 3 rpm. Three questions need to be answered:
• What is the maximum power needed during acceleration? • What are the maximum and minimum power needs during the con-
stant velocity portion of a move? • Does the turntable drive need to absorb power, or act as a brake,
during a normal show move deceleration?
