EFFECTS OF MOTION ON JET EXHAUST NOISE FROM AIRCRAFT

The various problems involved in the evaluation of the jet noise field prevailing between an observer on the ground and an aircraft in flight in a typical takeoff or landing approach pattern were studied. Areas examined include: (1) literature survey and preliminary investigation, (2) propagation effects, (3) source alteration effects, and (4) investigation of verification techniques. Sixteen problem areas were identified and studied. Six follow-up programs were recommended for further work. The results and the proposed follow-on programs provide a practical general technique for predicting flyover jet noise for conventional jet nozzles. (Author)

• Corporate Authors:

  Boeing Company

  Commercial Airplane Group, PO Box 707
  Seattle, WA  United States  98105
• Authors:
  • CHUN, K S
  • Berman, C H
  • Cowan, S J
• Publication Date: 1976-6

Media Info

• Pagination: 221 p.

Subject/Index Terms

• TRT Terms: Aircraft noise; Exhaust gases; Jet propelled aircraft; Landing; Mathematical prediction; Noise; Noise control; Nozzles; Sound transmission; Takeoff; Turbulence
• Old TRIS Terms: Aircraft landing; Exhaust nozzles; Nozzle flow; Turbulence effects
• Subject Areas: Aviation; Data and Information Technology; Environment;

Filing Info

• Accession Number: 00145778
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NASA-CR-2701 Final Rpt.
• Contract Numbers: NAS3-18539
• Files: TRIS
• Created Date: Jan 16 1977 12:00AM