BLADE-RATE FORCE FLUCTUATIONS OF A PROPELLER IN NON-UNIFORM FLOW

When a propeller rotates in a non-uniform flow field, unsteady propeller forces are generated at blade-rate frequency and its harmonics. A method of calculating these forces based upon two-dimensional unsteady aerofoil theory is described. A listing of a FORTRAN program to carry out these calculations is provided, together with a numerical example, and information about using the program. It is believed that this technique is a satisfactory compromise, achieving adequate accuracy with minimal computing cost; its use is recommended as a regular design tool. (Author)

• Corporate Authors:

  Admiralty Research Laboratory

  Teddington,   England 
• Authors:
  • Murray, M T
  • Tubby, J E
• Publication Date: 1973-6

Media Info

• Pagination: 51 p.

Subject/Index Terms

• TRT Terms: Blades (Machinery); Force; Propellers; Vibration; Wakes
• Old TRIS Terms: Blade frequency vibration; Propeller forces; Propeller theory; Unsteady loading; Wake analysis
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00053917
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: ARL/M/P33A
• Files: TRIS
• Created Date: May 7 1974 12:00AM