• SAE ARP4055

SAE ARP4055

Ground-Plane Microphone Configuration for Propeller-Driven Light-Aircraft Noise Measurement

SAE International , 11/07/2007

Publisher: SAE

File Format: PDF

$43.00$87.00


The scope of this ARP embraces the description of a configuration for a ground-plane microphone installation that may be used to determine sound pressure levels equivalent to those which would have been measured in an acoustic freefield at the microphone location. The one-third - octave-band center-frequency range over which equivalent freefield sound pressure levels may be obtained is from as low as 50 Hz to at least as high as 10,000 Hz. The specific application of the measurement technique described in this ARP is the determination of the equivalent freefield sound pressure levels of the noise produced by propeller-driven light aircraft, in flight, for sound incidence angles within 30 degrees of the normal to the ground. For larger angles to the normal, additional adjustments may be necessary which are outside the scope of this ARP. Caution needs to be exercised, therefore, if the recommended configuration is used to measure the noise from aircraft other than those driven by propeller powerplants, in particular, when full spectral information is required (especially outside the range of 30 degrees to the normal to the ground surface), or when measurements of time-integrated noise descriptors are required.

SAE ARP4055 History

SAE ARP4055A

SAE ARP4055A

$50.00 $101.00

SAE ARP4055

SAE ARP4055

$43.00 $87.00

More SAE Standards PDF

SAE MA2536A

SAE MA2536A

$39.00 $79.00

SAE AMS5919B

SAE AMS5919B

$34.00 $69.00

SAE AMS2768C

SAE AMS2768C

$45.00 $91.00

SAE AIR7484

SAE AIR7484

$60.00 $120.00