An NACA transonic test section with tapered slots tested at Mach numbers to 1.26

Vernon G. Ward, Charles F. Whitcomb, Merwin D. Pearson
Mar 1950

An NACA octagonal transonic slotted test section has been modifies to include slots with point origins located at the tunnel aerodynamic minimum and which diverged linearly over a length of one and one-half jet diameters. The uniformity of the supersonic flow along the axis of this configuration was investigated and an indication of interference effects on a body of revolution was obtained.

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