Characteristics of a transonic test section with various slot shapes in the Langley 8-foot high-speed tunnel

Ray H. Wright, Virgil S. Ritchie
Oct 1951

A large wind tunnel, approximately eight feet in diameter, has been converted to transonic operation by means of slots in the boundary extending in the direction of flow. The usefulness of such a slotted wind tunnel, already known with respect to the reduction of the subsonic blockage interference and the production of continuously variable supersonic flows, has been augmented by devising a slot shape with which a supersonic test region with excellent flow quality can be produced.

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