TIME-DEPENDENT THRUST GENERATED BY A PROPELLER OPERATING IN A TURBULENT INFLOW

The broadband radiated sound of a propulsor can be related to the time-dependent thrust generated by the propulsor due to operation in a randomly varying turbulent velocity field. In order to understand better the radiated sound phenomenon. An experimental and theoretical investigation of the time-dependent thrust response of a propeller due to operation in turbulent inflows having various characteristic parameters was conducted. The experimental investigations employ an unsteady thrust balance mounted in the drive shaft of a 5-bladed free-stream propeller. Measurements of the time-dependent thrust generated by the propeller were made for turbulent inflows having a range of characteristics length scales and a range of turbulent intensity.

• Corporate Authors:

  Pennsylvania State University, University Park

  Applied Research Laboratory
  University Park, PA  United States  16802
• Authors:
  • Thompson, D E
• Publication Date: 1974-4

Media Info

• Pagination: 24 p.

Subject/Index Terms

• TRT Terms: Cavitation noise; Noise; Turbulence; Unsteady flow
• Old TRIS Terms: Radiated noise
• Subject Areas: Environment; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00095127
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TM-74-99 Tech Memo
• Contract Numbers: N00017-73-C-1418
• Files: TRIS
• Created Date: May 29 1975 12:00AM