MODEL TESTS OF A HELICAL FORM SHIP

A letter report on model tests of a Helical form ship is presented, comparing resistance data for the Helical ship with the Mariner hull, and determining the effect of air lubrication on the model. Results consist of curves of effective horsepower and resistance for each hull. Testing indicates that the Helical form does not lend itself to a ship form at all, its resistance being roughly twice that of a Mariner. It is suggested that research be made of other simple forms which may be more suitable for use as a ship form. The air escaping from the manifold forward was not found to provide an air film over the bottom, but the question of air lubrication is concluded to be applicable to almost any vessel with a large amount ot wetted surface and reasonably low speeds.

• Supplemental Notes:
  • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number SIT-LR-1150.
• Corporate Authors:

  Stevens Institute of Technology

  Castle Point Station
  Hoboken, NJ  United States  07030
• Authors:
  • DeSaix, P
• Publication Date: 1966-6

Media Info

• Features: Figures; Photos; References;
• Pagination: 13 p.

Subject/Index Terms

• TRT Terms: Fluid resistance; Hulls; Lubrication; Ship motion; Ships
• Old TRIS Terms: Air lubrication; Hull lines
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00026964
• Record Type: Publication
• Source Agency: Maritime Administration
• Report/Paper Numbers: 1150 Letter Rpt
• Contract Numbers: MA-2701
• Files: TRIS, USDOT
• Created Date: Feb 14 1973 12:00AM