Accession Number:

AD0917355

Title:

An Experiment in Aural Detection of Helicopters

Descriptive Note:

Final rept.

Corporate Author:

BOEING VERTOL CO PHILADELPHIA PA

Personal Author(s):

Report Date:

1973-12-01

Pagination or Media Count:

121.0

Abstract:

The report describes a field experiment used to evaluate a theoretical method of determining helicopter aural detection distance. A test program was conducted using a light commercial helicopter, test observers, and supporting acoustic monitoring equipment. Various background ambient noise conditions were used at the observer location. Data was reduced, detection distances were obtained, and comparisons were made with theoretically predicted detection distances.

Subject Categories:

  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE