Accession Number : ADD002994

Title :   Edgetone Suppression Device for Wind Tunnel Walls.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Dougherty,Nathan S , Jr ; Anderson,Charles F

Report Date : 24 Aug 1976

Pagination or Media Count : 5

Abstract : The patent relates to a wind tunnel having a test section, located within a plenum, with the walls of the test section containing a plurality of small holes which permits flow, through the holes and plenum, for unchoking the test section when the wind tunnel is operating near sonic speeds. A splitter plate, to suppress edge tones, is positioned in each of the holes along the direction of flow which divides the holes into a left and a right half with respect to the direction of flow.

Descriptors :   *Wind tunnels, *Walls, *Patents, Supersonic flow, Plenum chambers, Noise reduction

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE