PERFORMANCE OF AN INCLINED SHAFT PARTIALLY-SUBMERGED PROPELLER OPERATING OVER A RANGE OF SHAFT YAW ANGLES

Model experiments were conducted to determine the performance of model propeller 4407 in partially-submerged operation for a range of shaft yaw angles. All experiments with the highly skewed propeller were conducted at 30 percent submergence and at 19.5 degrees shaft inclination from the horizontal. The purpose of the experiments was to determine the effects of shaft yaw angle on the propeller performance. Test results showed that shaft yaw angle could yeild a 15 percent increase in efficiency based on forward thrust production. (Author)

• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Ship Performance Department
  Bethesda, MD  United States  20084
• Authors:
  • Alder, R S
  • Moore, D H
• Publication Date: 1977-11

Media Info

• Pagination: 44 p.

Subject/Index Terms

• TRT Terms: Bending moments; Cavitation (Mechanics); Cavitation erosion; Dynamometers; Force; Loads; Mathematical analysis; Performance; Pitch (Dynamics); Propeller shafts; Propellers; Ships; Structural models; Surface effect ships; Tables (Data); Thrust; Yaw; Yaw
• Uncontrolled Terms: Experimental data; Ship models
• Old TRIS Terms: Marine propellers; Model testing; Partially submerged propellers; Performance engineering; Propeller efficiency; Propeller forces; Propeller performance; Propeller shaft inclination; Propeller thrust; Skewed propellers
• Subject Areas: Bridges and other structures; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00174789
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SPD-802-01
• Files: TRIS
• Created Date: Apr 26 1978 12:00AM