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.

• Corporate Authors:

  Lockheed Missiles and Space Company Incorporated

  111 Lockheed Way
  Sunnyvale, CA  United States  94088
• Authors:
  • Waid, R L
  • Kramer, R L
• Publication Date: 1970-11

Media Info

• Pagination: 81 p.

Subject/Index Terms

• 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;

Filing Info

• 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