DYNAMIC RESPONSE OF AN ELASTIC PROPELLER TO A NON-UNIFORM INFLOW

An important problem in both naval architecture and aircraft engineering concerns the vibrations and noise generated by the propulsion system. In marine applications, the dominant source of vibrations is the propeller. Due to its response to a spatially and temporally nonuniform velocity field the propeller exerts time-dependent axial and side forces, as well as fluctuating torques and moments upon the hull of a ship. The necessity for minimizing unsteady forces and ship vibration levels, has led to the adoption of propeller blades with a high degree of skew. The dynamic response of these blades may either alleviate or worsen the net forces and couples. This is the reason for the study. (Author Modified Abstract)

• Supplemental Notes:
  • Doctoral thesis.
• Corporate Authors:

  Pennsylvania State University, University Park

  Ordinance Research Laboratory
  University Park, PA  United States  16802
• Authors:
  • Tsushima, H
• Publication Date: 1972-6-30

Media Info

• Pagination: 135 p.

Subject/Index Terms

• TRT Terms: Aerodynamic lift; Deformation; Excitation; Flexible structures; Force; Hulls; Loads; Mathematical analysis; Propellers; Unsteady flow; Velocity; Vibration; Water tunnels
• Uncontrolled Terms: Model tests; Velocity fields
• Old TRIS Terms: Force mechanics; Hull propeller interaction; Lifting surface theory; Loading mechanics; Marine propellers; Periodic variations; Propeller excitation; Propeller vibration; Skewed propellers
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00047637
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TM-72-111 Tech Memo
• Contract Numbers: N00017-70-C-1407
• Files: TRIS
• Created Date: Oct 18 1973 12:00AM