METHOD AND MEANS FOR REDUCING POWER REQUIREMENTS OF SUPERSONIC WIND TUNNELS

摘要

A system for reducing the power requirements of supersonic wind tunnels of the type having variable geometry diffusers which involves especially a pumping system which is capable of creating the pressure ratio across the tunnel necessary for starting conditions in a blow down configuration at small mass flow rate of air and which at the same time is sufficiently variable or flexible that it is capable of pumping the designed mass flow rate of air through the tunnel at a lower pressure ratio when the tunnel achieves a steady-state condition.