AIRCRAFT NOISE DEFINITION

Acoustic data acquisition and reduction systems are discussed together with analytical procedures used to derive noise characteristics of a series of Boeing aircraft types. Noise data are presented in EPNdB and dB(A) units, from takeoff to low approach thrust and for aircraft altitudes from 200 to 12,000 feet. Areas of possible data deficiency are identified and 90% confidence limits established where possible. A flight test program is proposed with the objectives of improving data accuracy and establishing confidence limits over a wide range of operating conditions.

• Corporate Authors:

  Boeing Commercial Airplane Company

  P.O. Box 3707
  Seattle, WA  United States  98124

  Federal Aviation Administration

  Office of Environmental Quality, 800 Independence Avenue, SW
  Washington, DC  United States  20591
• Authors:
  • WILLIAMS, B G
  • Yates, R
• Publication Date: 1973-12

Media Info

• Pagination: 78 p.

Subject/Index Terms

• TRT Terms: Acoustic measuring instruments; Acoustics; Aircraft noise; Altitude; Approach; Data collection; Data reduction; Environment; Noise control; Takeoff
• Identifier Terms: Boeing aircraft
• Uncontrolled Terms: Noise reduction
• Old TRIS Terms: Acoustic measurement; Climbing
• Subject Areas: Aviation; Environment;

Filing Info

• Accession Number: 00092017
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FAA-EQ-73-7-1 Final Rpt., D6-41302
• Contract Numbers: DOT-FA73WA-3254
• Files: NTIS, TRIS, USDOT
• Created Date: Oct 18 1976 12:00AM