EFFECT OF CENTERBODY SCATTERING ON PROPELLER NOISE

This paper describes how the effect of acoustic scattering from the hub or centerbody of a propeller will affect the far-field noise levels. A simple correction to Gutin's formula for steady loading noise is given. This is a maximum for the lower harmonics but has a negligible effect on the higher frequency components that are important subjectively. The case of a blade vortex interaction is also considered, and centerbody scattering is shown to have a significant effect on the acoustic far field.

• Supplemental Notes:
  • AIAA J, v 29 n 4, April 1991, p 572 [5 p, 7 ref, 7 fig]
• Authors:
  • Glegg, S A
• Publication Date: 1991

Language

• English

Subject/Index Terms

• TRT Terms: Cavitation noise; Propellers; Scattering
• Old TRIS Terms: Propeller hubs
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00700609
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM