GRAS launches new kit for aero-acoustic testing in wind tunnels

摘要

GRAS Sound and Vibration UK has launched a compact flush mount turbulence screen microphone kit for improved aero-acoustic testing in wind tunnels. By attenuating the hydrodynamic component of turbulence up to as much as 25 dB, the acoustic signals of interest can now be identified and diagnosed with a much more reliable resolution. The turbulence screen integrates the flush and recessed mounting techniques with a special wire mesh into one single unit and allows for adaptation of several mounting options. Key features and benefits, says GRAS, include very high induced flow noise reduction, extremely low acoustic attenuation, low installation height, front or rear mounting options and flush-mount and standard microphone accommodation.