Results are presented of the first systematic study of the propulsion of planing craft, using propellers driven by inclined shafts with a rudder located behind each propeller. The study is focused on the resistance characteristics of three of the five models of DTMB Series 62. The propellers are derived from the extensive three-bladed Gawn-Burrill series, tested over a wide range of cavitation numbers. The performance predictions are based upon the method recently developed by Hadler. Single-, or twin-, and quadruple-screw configurations have been studied for the Series 62 prototype hulls over a wide range of sizes and speeds. The results have been synthesized into design charts that provide (i) the optimum diameter-rpm for a given design displacement and speed, (ii) the value of the maximum propulsive coefficient, and (iii) the effect on propulsive efficiency of deviations from the optimum diameter. The charts may be easily used by the planing craft designer in making preliminary design and trade-off studies on propulsion systems of planing craft. Appendix 1 contains numerical examples of typical design studies, illustrating the use of the design charts.

  • Supplemental Notes:
    • Presented at the Annual Meeting of SNAME, November 11-12, 1971
  • Corporate Authors:

    Society of Naval Architects and Marine Engineers

    601 Pavonia Avenue
    Jersey City, NJ  United States  07306-2907
  • Authors:
    • Hadler, J B
    • Hubble, E N
  • Publication Date: 1971-11

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 29 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00028637
  • Record Type: Publication
  • Source Agency: Society of Naval Architects and Marine Engineers
  • Report/Paper Numbers: Paper 8
  • Files: TRIS
  • Created Date: Apr 10 1972 12:00AM