Description

Three men stand at distant intervals in a wind tunnel facility. Technology Review, February 1951, p. 189. Original Credit Line: National Advisory Committee for Aeronautics.

Original Caption: "Intake end, showing six passages and arrangement of the Helmholtz resonators for the attenuation of noise, particularly of very low frequency, at the supersonic wind tunnel of the Lewis Flight Propulsion Laboratory in Cleveland. The discharge end of the subsonic diffuser is at the left."