MOTIONS AND DRAG OF AN AIR CUSHION VEHICLE WITH A DEEP SKIRT IN CALM WATER AND RANDOM WAVES

A model of an air cushion vehicle (ACV) with a deep pericell-type skirt and high cushion loading has undergone experiments in calm water and head random waves. The main goal of the investigation was to obtain drag and motion data which can be used to guide the design of a prototype. The results will also be used to validate computer predictions. Plots of mean drag are presented in this report, as are tables containing standard deviation values of motions and accelerations. The effect of model weight and volume air flow on drag and motions is discussed. It is also shown that this heavily loaded ACV has higher hump and post-hump drag than a similiarly configured ACV with smaller payload and shorter skirt. In addition, the heavier, deep-skirted vehicle pitches less and heaves about the same as the other craft. (Author)

• Supplemental Notes:
  • Available in microfiche only.
• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Ship Performance Department
  Bethesda, MD  United States  20084
• Authors:
  • Gersten, A
• Publication Date: 1977-1

Media Info

• Pagination: 79 p.

Subject/Index Terms

• TRT Terms: Air cushion vehicles; Drag forces; Hydrodynamics; Pitch (Dynamics); Ship motion; Vehicle design
• Uncontrolled Terms: Ship design
• Old TRIS Terms: Skirt design; Wave force analysis
• Subject Areas: Design; Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 00158241
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SPD-748-01
• Files: TRIS
• Created Date: Aug 31 1977 12:00AM