A LIFTING LINE COMPUTER PROGRAM FOR PRELIMINARY DESIGN OF PROPELLERS

This report presents a computer program that can be used for the preliminary design and to predict the performance of single screw propellers when designed for a prescribed hydrodynamic pitch distribution. This design program is based on lifting line theory as developed by Lerbs for moderately-loaded finite-bladed propellers. Stress calculations using beam theory are also made for each design, which take into account the effect of blade skew and rake. Design calculations can be made for given design speeds where delivered shaft power is computed (Thrust Option), or for the case when the delivered shaft power is specified and the corresponding speed is computed (Power Option). A FORTRAN listing of the program, developed to run on the computers at the David W. Taylor Naval Ship Research and Development Center (DTNSRDC), is presented as well as input and output obtained for two sample designs, one using the Thrust Option, and the other the Power Option. (Author)

• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Ship Performance Department
  Bethesda, MD  United States  20084
• Authors:
  • Caster, E B
  • Diskin, J A
  • LaFone, T A
• Publication Date: 1975-11

Media Info

• Pagination: 156 p.

Subject/Index Terms

• TRT Terms: Computer aided design; Computer programs; Digital computers; Hydrodynamics; Mathematical models; Power; Propeller blades; Propellers; Skewed structures; Stresses; Vehicle design; Wakes
• Identifier Terms: FORTRAN (Computer program language)
• Uncontrolled Terms: Skewness
• Old TRIS Terms: Computer programs (Propellers); Lifting line theory; Marine propellers; Propeller design
• Subject Areas: Design; Energy; Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00146010
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SPD-595-01 Final Rpt.
• Files: TRIS
• Created Date: Jan 16 1977 12:00AM