GENERAL RESISTANCE TEST OF A STEPPED PLANNING HULL WITH APPLICATION TO A HYDROFOIL CONFIGURATION

General resistance tests of TMB model 4776, a transverse stepped planing hull, were conducted. The hull is the third model tested to determine suitability for use as a hydrofoil hull. Resistance, trimming moment, and wetted lengths were measured for several load, trim, and speed conditions. All data are presented in nondimensional form for use in comparing hull forms. The tests indicated that the model at high speed coefficients has low moment and resistance characteristics which would be advantageous to a hydrofoil configuration. Although instabilities due to spray and inadequate step ventilation were found, the trim conditions at which these instabilities occur can be avoided during the normal takeoff operation. ( Author )

• Corporate Authors:

  Naval Ship Research and Development Center

  Washington, DC  United States 
• Authors:
  • Benen, Lawrence
• Publication Date: 1967-5

Media Info

• Pagination: 45 p.

Subject/Index Terms

• TRT Terms: Fluid resistance; Hulls; Hydrofoil boats; Hydroplanes
• Uncontrolled Terms: Hull resistance
• Old TRIS Terms: Hull forms; Hydrofoil craft
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00001884
• Record Type: Publication
• Source Agency: Defense Documentation Center
• Report/Paper Numbers: R & D Rpt.
• Files: TRIS
• Created Date: Oct 30 1972 12:00AM