EXPERIMENTAL STUDY OF MODEL SIZE EFFECTS ON CAVITATION AND VENTILATION OF SURFACE-PIERCING STRUTS
An experimental program was conducted in the Lockheed Underwater Missile Facility to determine the effect of model size on the cavitation and ventilation of vertically, surface-piercing struts. The struts tested had chord lengths of 0.5, 1.0, and 2.0 ft., were manufactured to the same section profile, and were tested at a nominal submergence of one chord length. Tests were conducted at speeds from 17 to 32 fps for yaw angles ranging from 4 to 8 degrees. The sideforce and drag were measured and are presented for cavitating conditions preceeding ventilation inception and for fully-ventilated conditions. Motion pictures of the flow were used to determine quantitative features of the cavitation, spray sheet, and the mechanism of ventilation inception.
Lockheed Missiles and Space Company Incorporated111 Lockheed Way
Sunnyvale, CA USA 94088
- Waid, R L
- Kramer, R L
- Publication Date: 1970-11
- Pagination: 81 p.
- TRT Terms: Hydrofoil boats; Hydrofoils; Struts
- Uncontrolled Terms: Scale effect
- Old TRIS Terms: Cavitating hydrofoils; Hydrofoil craft; Surface piercing hydrofoils
- Subject Areas: Marine Transportation; Vehicles and Equipment;
- Accession Number: 00098230
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: LMSC-D026656 Final Rpt.
- Contract Numbers: N00014-69-C-0182
- Files: TRIS
- Created Date: Jul 29 1975 12:00AM