A GEOMETRIC AND HYDRODYNAMIC COMPARISON BETWEEN FULLY SUBMERGED AND SURFACE PIERCING HYDROFOIL SYSTEMS

By comparison of three Supramar hydrofoil types and five American test craft, important geometric parameters are found. Frictional and lifting area are plotted as co-ordinate axes for both foils and for the two main foilborne waterlines. A similar plot is represented for the area/lift ratio of both foils. An estimate of inducted angle is given together with the mean chord length/submergence depth ratio. The area/lift ratio yields expressions for drag/lift ratio and speed. Maximum and take-off speed are used as co-ordinate axes. Basic geometric parameters of the seakeeping capability are plotted.

• Corporate Authors:

  Kalerghi Publications

  51 Welbeck Street
  London W1,   England 
• Authors:
  • DeWitt, H
• Publication Date: 1971-5

Media Info

• Features: References;
• Pagination: p. 22-31
• Serial:
  • Hovering Craft and Hydrofoil
  • Volume: 10
  • Issue Number: 8
  • Publisher: Kalerghi Publications

Subject/Index Terms

• TRT Terms: Hydrofoil boats; Hydrofoils; Performance; Seakeeping
• Old TRIS Terms: Hydrofoil craft; Hydrofoil performance; Surface piercing hydrofoils
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00041338
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Mar 2 1973 12:00AM