A new wall-mounted phased microphone array was designed, built, and calibrated for testing in closed or open test section wind tunnels. Two configurations were evaluated - one with microphone plate flush with the tunnel surface and the other with microphone plate recessed behind a porous screen. The arrays were successfully operated to Mach number of 0.4 and were calibrated using an in-flow speaker source during a recent study at the AEDC NFAC 40- by 80-Ft Wind Tunnel at NASA Ames
With the continuous growth in demand for air traffic and wind turbines, the noise emissions they gen...
In the development process of aircraft and rail vehicles, measurement techniques based on microphone...
Airframe noise is growing a concern for aircraft manufacturers, operators and commu- nities. The abi...
A new aeroacoustic measurement capability has been developed consisting of a large channelcount, fie...
An overview of the development of two microphone directional arrays for aeroacoustic testing is pres...
This paper describes efforts to develop a small in-flow phased microphone array as a reference acous...
Measurements in hard-walled, closed section wind tunnels are desirable for the development of quiet ...
Preliminary results are presented from a test conducted to determine how well microphone phased arra...
Over the past several years, significant effort has been expended at NASA Langley developing new Mic...
A prototype four-element end-fire microphone array was designed and built for evaluation as a direct...
In order to meet the objectives of ACARE Vision 2020 which aims amongst others at a reduction in per...
The phased array technique is a powerful tool for the localisation and quantification of sound sourc...
The phased microphone array has become a widely used tool in aeroacoustic testing for the localisati...
International audienceIn this work, various microphone phased array data processing techniques are a...
The ability to perform aeroacoustic measurements in hard-walled, closed section wind tunnels is desi...
With the continuous growth in demand for air traffic and wind turbines, the noise emissions they gen...
In the development process of aircraft and rail vehicles, measurement techniques based on microphone...
Airframe noise is growing a concern for aircraft manufacturers, operators and commu- nities. The abi...
A new aeroacoustic measurement capability has been developed consisting of a large channelcount, fie...
An overview of the development of two microphone directional arrays for aeroacoustic testing is pres...
This paper describes efforts to develop a small in-flow phased microphone array as a reference acous...
Measurements in hard-walled, closed section wind tunnels are desirable for the development of quiet ...
Preliminary results are presented from a test conducted to determine how well microphone phased arra...
Over the past several years, significant effort has been expended at NASA Langley developing new Mic...
A prototype four-element end-fire microphone array was designed and built for evaluation as a direct...
In order to meet the objectives of ACARE Vision 2020 which aims amongst others at a reduction in per...
The phased array technique is a powerful tool for the localisation and quantification of sound sourc...
The phased microphone array has become a widely used tool in aeroacoustic testing for the localisati...
International audienceIn this work, various microphone phased array data processing techniques are a...
The ability to perform aeroacoustic measurements in hard-walled, closed section wind tunnels is desi...
With the continuous growth in demand for air traffic and wind turbines, the noise emissions they gen...
In the development process of aircraft and rail vehicles, measurement techniques based on microphone...
Airframe noise is growing a concern for aircraft manufacturers, operators and commu- nities. The abi...
.jpg%3Fwidth%3D300&w=3840&q=75)
Add to ORKG