A VALIDATION STUDY OF THE MIXED FOIL CONCEPT FOR HIGH SPEED HYDROFOILS

A hydrodynamic validation study of the concept of the mixed foil has been carried out. A mixed foil is a streamlined hydrofoil equipped with a flap or other device which, above a certain speed, can be activated so as to change the flow around the foil into a supercavitating flow. At takeoff and at moderate speeds, a mixed foil is operated as a subcavitating foil; at high speeds, it is operated as a supercavitating foil. During high speed operations, a reduction in the wetted planform area of a mixed foil is proposed. Two hydrofoils which have as their sections plano-convex foils of thickness to chord ratios of 5% and 6% are used for the study.

• Corporate Authors:

  Pennsylvania State University, University Park

  Applied Research Laboratory
  University Park, PA  United States  16802
• Authors:
  • Wang, D P
  • Shen, Y T
• Publication Date: 1975-6-18

Media Info

• Pagination: 51 p.

Subject/Index Terms

• TRT Terms: Hydrofoils; Loads; Performance; Supercavitating hydrofoils
• Old TRIS Terms: Cavitating hydrofoils; Flapped hydrofoils; Hydrofoil loading; Hydrofoil performance
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00128976
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TM-75-171 Tech Memo
• Contract Numbers: N00017-73-C-1418
• Files: TRIS
• Created Date: Jan 21 1976 12:00AM