ANALYSIS OF ACCELERATING MOTION OF PLANING BOAT ON SMOOTH SEA

The resistance of a planing boat is usually determined on the basis of constant speed model test results. That assumes a stationary case and the static equilibrium of the planing boat. In transient speed cases, the planing boat sails with changeable acceleration and, due to inertia, the required thrust is greater than that for the same constant speed. The dynamic equilibrium of the planing boat is analyzed for constant, linear, sine and parabolic accelerated translatory sailing, as a function of speed, on the smooth sea. The formulae for determination of speed and sailing distance are derived as functions of time. The dynamic equilibrium model of the planing boat is defined. On the basis of it the thrust is determined using Savitsky's theory, and a proper Newton-Rader's propeller is selected. For a 19000 kg planing boat, attaining a maximum speed of 54 kn, the advantage of both the parabolic and sine acceleration models over the other considered ones is found. Also, the possibilities for analysing thrust, power and speed of revolution, and kinematic characteristics of the planing boat's accelerated sailing are shown.

  • Supplemental Notes:
    • Brodogradnja, v 43 n 1, Jan-Mar 1995, p 39 [9 p, 12 ref, 4 tab, 16 fig]
  • Authors:
    • Gugi, D
  • Publication Date: 1995

Language

  • Croatian

Subject/Index Terms

Filing Info

  • Accession Number: 00710687
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM