HYDRODYNAMIC EQUILIBRIUM CONDITIONS FOR AG (EH) MAIN STRUCT- POD-FOIL SYSTEM USING FLAP INCIDENCE CONTROL

The power requirements for hydrofoil craft control systems has been a subject of recent concern as the U.S. Navy considers larger and larger craft. Four hydrofoil configurations were investigated theoretically to determine power requirements to control a hydrofoil ship similar to the AG(EH) in a random sea, and a pivoted foil with leading-edge tab was found to consume the least power. To determine whether this configuration would actually consume the least power, a 1/12-scale model was examined for equilibrium flap/foil angle conditions ("stable flying situations") of the fully-wetted case. A passive control system comprised of mechanical linkages was used with the model to obtain steady-flow, fully-wetted conditions. The results of this experiment are discussed.

• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Ship Performance Department
  Bethesda, MD  United States  20084
• Authors:
  • Coder, D W
  • Wisler Jr, B B
• Publication Date: 1976-6

Media Info

• Pagination: 41 p.

Subject/Index Terms

• TRT Terms: Energy consumption; Hydrofoil boats; Performance; Struts
• Old TRIS Terms: Hydrofoil craft; Hydrofoil performance; Power prediction
• Subject Areas: Energy; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00142808
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: SPD-332-03
• Files: TRIS
• Created Date: Dec 15 1976 12:00AM