BASIC AERODYNAMIC NOISE THEORY

The present state of knowledge in the theory of aerodynamic noise generation and propagation is outlined, with emphasis on the identification and the physical and analytical modeling of the major sound sources associated with turbulent airflows. The importance of source coherency with regard to flow inhomogeneities is outlined, and the relevance of studies into the sound propagation from acoustic singularities embedded in a sheared flow is discussed with respect to the jet noise problem.

• Supplemental Notes:
  • AGARD Lecture Series, Aerodynamic Noise at von Karman Inst Meet, Rhode St., Genese, Belgium, December 6-9, 1976.
• Corporate Authors:

  Advisory Group Aerospace Research and Development

  7 Rue Ancelle
  92 Neuilly-sur-Seine,   France 
• Authors:
  • Fuchs, H V
• Publication Date: 1977-1

Media Info

• Features: References;
• Pagination: 26 p.

Subject/Index Terms

• TRT Terms: Aerodynamics; Aircraft; Aircraft noise; Engines; Jet propelled aircraft; Noise; Noise sources; Sound transmission; Turbulence
• Uncontrolled Terms: Aircraft engines
• Old TRIS Terms: Noise generation
• Subject Areas: Aviation; Environment; Vehicles and Equipment;

Filing Info

• Accession Number: 00172754
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: No. 80, Paper 2
• Files: TRIS
• Created Date: Apr 12 1978 12:00AM