ON AN APPROXIMATE CALCULUS OF THE THRUST DEDUCTION

This report proposes an approximate calculus for calculating the normal part of the thrust deduction. The basic integral equation of the present method is deduced from hydrodynamic assumptions of the pressure field about a hull and a propeller. The author calculates the normal part of the thrust deduction for various hull-forms by the present method, and compares the calculated results with results calculated by the potential flow method or results of self-propulsion tests. These comparisons show that the present method is reasonable. Calculating time consumed with the numberical method in the present method is less than that in the case of the potential flow method, and application of the present method to the more practical hull-form is easy. Consequence of some numerical results shows that the normal part of the thrust deduction is the largest part of the thrust deduction.

  • Availability:
  • Corporate Authors:

    Society of Naval Architects of Japan

    23 Shiba-kotohiracho, Minato-ku
    Tokyo 135,   Japan 
  • Authors:
    • ISHIDA, S
  • Publication Date: 1974-12

Language

  • Japanese

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00129336
  • Record Type: Publication
  • Source Agency: Society of Naval Architects of Japan
  • Files: TRIS
  • Created Date: Mar 10 1976 12:00AM