Accession Number : AD0861673

Title :   An Evaluation of the Fluctuating Airborne Environment in the AEDC-PWT 4-Ft Transonic Tunnel.

Descriptive Note : Final rept. Sep 68-Jan 69,

Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFS TN

Personal Author(s) : Credle, O. P.

Report Date : NOV 1969

Pagination or Media Count : 62

Abstract : An investigation was conducted to evaluate the free-stream dynamic environment in the test section of an aerodynamic wind tunnel, transonic (4T). Test results were obtained over a Mach number range of 0.2 to 1.2 at total pressures of 1000, 2000, and 3000 psfa. The objectives of the test were to establish the magnitude and frequency distribution of the dynamic environment in the test section, and to determine the means for improving this environment if necessary. (Author)

Descriptors :   (*SUPERSONIC WIND TUNNELS, AERODYNAMIC NOISE), CALIBRATION, ENVIRONMENTAL TESTS, BROADBAND, NARROWBAND, WALLS, POROSITY.

Subject Categories : Test Facilities, Equipment and Methods
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE