The National Theatre´s scenery flying system

When the National Theatre´s point-hoist flying system was being planned, the only other system of its type, that in the BBC Television Centre Studio 1, was to be dismantled: not an auspicious beginning. In the preceding article of this issue, Richard Brett gives an overall view of the electronic systems in the National Theatre; this article looks in detail at the design criteria for the theatre´s variable-speed flying system