AIRCRAFT NOISE EVALUATION

Abstract

The Federal Aviation Administration, in response to Public Law 90- 411, has begun the rule making process leading to the certification of aircraft for noise. The basic element in the regulation criteria is the noise evaluation measure designated as effective perceived noise level, EPNL, which is a single number evaluator of the subjective effects of aircraft noise on human beings. Simply stated, EPNL consists of instantaneous perceived noise level corrected for tones and duration. The history of the development of EPNL is presented and a critical evaluation of its validity is made. The computational procedures are described in detail including both integration and approximate methods for calculating duration corrections. Examples are given in the appendices.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1968
Accession Number
AD0676230

Entities

People

  • William C. Sperry

Organizations

  • Federal Aviation Administration

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustics
  • Aircraft Industry
  • Aircraft Noise
  • Aircrafts
  • Computational Science
  • Engine Noise
  • Frequency
  • Frequency Bands
  • Human Factors Engineering
  • Jet Aircraft
  • Measurement
  • Physical Properties
  • Short Takeoff Aircraft
  • Sound Pressure
  • Turbofan Engines
  • Turbojet Engines
  • United States

Readers

  • Calculus or Mathematical Analysis
  • Instructional Design and Training Evaluation.
  • Nanofabrication and Microfabrication.