A Comparison of Measured Take-Off and Flyover Sound Levels for Several General Aviation Propeller-Driven Aircraft.

Abstract

The Federal Aviation Administration is currently reviewing noise certification procedures for general aviation propeller-driven aircraft. As part of this review noise measurements were made for take-offs and flyovers of several propeller-driven aircraft at Dulles International Airport. The data from the tests were analyzed by FAA in terms of the A-weighted sound level. This analysis indicated that there were general differences between take-off and flyover sound levels. The intent of this report is to present a review of the data without going into detailed analyses. Possible reasons for differences between take-off and flyover sound levels are explored and certain conclusions drawn. Recommendations are then made for future work in order to provide a more-detailed understanding of the physical phenomena involved.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1984
Accession Number
ADA139901

Entities

People

  • E. G. Wilby
  • J. F. Wilby

Organizations

  • BBN Technologies

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airplanes
  • Airspeed
  • Band Spectra
  • Data Analysis
  • Data Reduction
  • Doppler Effect
  • Engines
  • Flight Speeds
  • Frequency
  • Frequency Shift
  • Mach Number
  • Measurement
  • Propeller Blades
  • Propeller Noise
  • Sound Pressure
  • Turboprop Engines

Readers

  • Acoustics.
  • Aviation Safety and Air Traffic Management
  • Theoretical Analysis.