POWERING PREDICTION FOR SURFACE EFFECT SHIPS BASED ON MODEL RESULTS

A method employing the laws of dynamic similarity to scale experimental model data is presented for predicting the powering performance of large surface effect ships. The data are reduced to individual components, including cushion wavemaking drag, sidewall and appendage frictional and form drags, aerodynamic drag, and seal drag. These components are appropriately scaled by either Froude or Reynolds scaling laws. Water channel and model dimension effects on wavemaking drag are discussed and a technique for calculating sidewall wetted area is presented. An experimentally derived algorithm characterizing seal-induced and frictional drag is explained. Drag predictions are compared with experimental trials data.

• Corporate Authors:

  American Institute of Aeronautics and Astronautics

  1290 Avenue of the Americas
  New York, NY  United States  10019
• Authors:
  • Wilson, R A
  • Wells, S M
  • Heber, C E
• Publication Date: 1979-10

Media Info

• Features: References;
• Pagination: p. 113-119
• Serial:
  • Journal of Hydronautics
  • Volume: 13
  • Issue Number: 4
  • Publisher: American Institute of Aeronautics and Astronautics

Subject/Index Terms

• TRT Terms: Aerodynamic force; Aerodynamics; Drag; Drag forces; Energy consumption; Ground effect; Skin resistance; Surface effect ships; Vehicles; Wall effect; Wave drag
• Uncontrolled Terms: Scale effect; Scaling laws
• Old TRIS Terms: Model testing; Power prediction
• Subject Areas: Design; Energy; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00316291
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Oct 8 1980 12:00AM