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Published April 1951 | Published
Journal Article Open

A Flexible Nozzle for a Small Supersonic Wind Tunnel

Abstract

The design of a small supersonic wind-tunnel test section (4 by 10 in.) incorporating a flexible nozzle is outlined. The flexible nozzle consists of a high-strength stepped steel plate. Two screw jacks provide an easy means of continuously changing the nozzle's shape according to the aerodynamic requirements. The boundary-layer compensation can also be varied during operation. Pressure surveys, together with schlieren and interferometric analysis of the test section, show the flow to be uniform over the operating range (M = 1.1 to 1.5).

Additional Information

© 1951 Institute of the Aeronautical Sciences. Received March 22, 1950. The authors wish to acknowledge the supervision and help of Dr. Hans Wolfgang Liepmann, under whose direction the design was executed. Harry Ashkenas rendered valuable assistance in the mechanical design.

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Created:
August 19, 2023
Modified:
October 18, 2023