EFFECTS OF MID-CHORD FLAPS ON THE VENTILATION AND FORCE CHARACTERISTICS OF A SURFACE-PIERCING HYDROFOIL STRUT

Ventilation and side force characteristics of a NACA 16-012 strut with span-wise mid-chord flaps attached from 0.5 to 0.7 chord were determined. This strut configuration represented a strut system with retractable mid-chord flaps in the extended mode. Experimental results showed that such a strut system exhibits the advantage of a streamline strut at preventilation speeds (low drag) and the advantage of a blunt-based strut at ventilation/post-ventilation speeds (no side force reversal).

• Corporate Authors:

  Naval Ship Research and Development Center

  Bethesda, MD  United States  20034
• Authors:
  • Nelka, J J
• Publication Date: 1974-11

Media Info

• Pagination: 60 p.

Subject/Index Terms

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

Filing Info

• Accession Number: 00097561
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NSRDC-4508
• Files: TRIS
• Created Date: Jul 24 1975 12:00AM