INFLUENCE OF FENCES ON SURFACE PIERCING STRUTS AND FOILS

This paper describes the mechanisms by which ventilation of surface piercing struts occurs, and explains why fences on the strut inhibit ventilation. It was found experimentally that, providing the fence around the leading edge of a strut is above a minimum size, the type of surface rupture known as nose ventilation was prevented. At the other end of the scale, very wide fences enhanced the probability of tail ventilation. After consideration of force changes an optimum nose fence size is suggested. Parameters controlling this sealing action are discussed. Lift and drag forces associated with specific fences are presented and a recommendation made.

• Supplemental Notes:
  • Symposium on Naval Hydrodynamics, 10th, Proceedings, Pap and Discuss, Cambridge, Mass., June 24-28, 1974.
• Corporate Authors:

  Office of Naval Research

  Department of the Navy, 800 North Quincy Street
  Arlington, VA  United States  22217
• Authors:
  • McGregor, R C
  • Foster, J L
  • Rothblum, R S
  • Swales, P D
• Conference:
  • Symposium on Naval Hydrodynamics, 10th, Proceedings, Pap and Discuss, Cambridge, Mass., June 24-28, 1974.
• Publication Date: 1976

Media Info

• Features: References;
• Pagination: p. 779-792

Subject/Index Terms

• TRT Terms: Hydrofoil boats; Hydrofoils; Struts; Ventilation systems
• Old TRIS Terms: Hydrofoil craft; Surface piercing hydrofoils; Ventilated hydrofoils
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00148559
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Feb 23 1977 12:00AM