Accession Number : ADA268566


Title :   Noise Measurement Flight Test of Five Light Helicopters


Descriptive Note : Final rept. Jul 91-May 93,


Corporate Author : JOHN A VOLPE NATIONAL TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MA


Personal Author(s) : Rickley, Edward J ; Jones, Kenneth E ; Keller, Amanda S ; Fleming, Gregg G


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a268566.pdf


Report Date : Jul 1993


Pagination or Media Count : 383


Abstract : The U.S. Department of Transportation, Federal Aviation Administration, (U.S.DOT/FAA), along with the U.S.DOT, Research and Special Programs Administration, Volpe National Transportation Systems Center (RSPA/ volpe Center) conducted a helicopter noise measurement flight test in Champaign, Illinois, during the period July 22 through 26, 1991. The primary objective of the study was to obtain the field data necessary to examine the feasibility of a Bimplified helicopter-noise-certification procedure (screening test). Acoustic data were measured by and stored on a hand-held sound-level meter (on-line processing) and recorded on digital tape for later off-line processing. A comparison of the measured on-line acoustic data with the acoustic data processed off-line provided the foundation necessary to evaluate the feasibility of the proposed screening test. In addition to acoustic measurements, meteorological data and helicopter tracking and performance data were also obtained.... Helicopter, Noise Measurement, Acoustic, Configuration, Meteorological


Descriptors :   *FLIGHT TESTING , *METEOROLOGICAL DATA , *ACOUSTIC MEASUREMENT , *NOISE(SOUND) , *HELICOPTERS , TEST AND EVALUATION , MEASUREMENT , TRANSPORTATION , CONFIGURATIONS , ACOUSTICS , NATIONAL TRANSPORTATION SYSTEM , HANDS , HAND HELD , ACOUSTIC DATA , TAPES , SOUND , FLIGHT , MANAGEMENT , PROCESSING , COMPARISON , TRACKING


Subject Categories : Aerodynamics
      Helicopters
      Meteorology
      Acoustics


Distribution Statement : APPROVED FOR PUBLIC RELEASE