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).
Naval Ship Research and Development CenterBethesda, MD USA 20034
- Nelka, J J
- Publication Date: 1974-11
- Pagination: 60 p.
- 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;
- 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