AN EXPERIMENTAL STUDY OF THE VENTILATION OF BLUNT-BASED SURFACE-PIERCING STRUTS

An experimental program was conducted in the Lockheed Underwater Missile Facility to investigate the ventilation characteristics for surface-piercing blunt-based struts in calm water and in waves. Struts with two leading-edge configurations, one sharp and one blunt, were tested, and the ventilation characteristics are compared with those previously obtained for struts with streamlined trailing edges to determine the effects of the blunt base. The experiments were performed at low ambient pressures to obtain ventilation inception under simultaneous Froude and cavitation number scaled conditions. Performance comparisons are made at strut yaw angles of six and eight degrees on the bases of resistance to ventilation and of the effects on hydrodynamic forces when ventilation occurs. (Author Modified Abstract)

• Corporate Authors:

  Lockheed Missiles and Space Company Incorporated

  111 Lockheed Way
  Sunnyvale, CA  United States  94088
• Authors:
  • Kramer, R L
• Publication Date: 1972-11

Media Info

• Pagination: 60 p.

Subject/Index Terms

• TRT Terms: Cavitation (Mechanics); Fluid dynamics; Hydrofoils; Leading edges; Struts; Ventilation systems; Water waves
• Uncontrolled Terms: Model tests
• Old TRIS Terms: Blunt bodies; Hydrofoil models; Surface piercing hydrofoils; Ventilated hydrofoils
• Subject Areas: Design; Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00047623
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: LMSC-TM05774-72-19 Final Rpt
• Contract Numbers: N00014-72-C-0091
• Files: TRIS
• Created Date: Oct 18 1974 12:00AM