HYCAT: HYBRID HYDROFOIL CATAMARAN CONCEPT

A hybrid marine vehicle concept has been developed which utilises a combination of static and dynamic support. This concept, termed HYCAT <HYdrofoil CATamaran>, combines a planing catamaran hull with two fully submerged hydrofoils mounted in tandem fore and aft. The hullform is developed by adding a high length/beam ratio, high deadrise sidehull along the keel of each catamaran demihull. The sidehull, which is the only portion immersed when operating foilborne provides buoyancy support. Spray strips provide discontinuities which separate the flow and provide dynamic lift in addition to the hydrofoils. Stability in the heave, pitch and roll degrees of freedom is achieved through the displacement dependent sidehull buoyancy and the rate and displacement dependent lift developed by the spray strips and hydrofoils. A comprehensive series of model tests has been conducted to characterize the smooth and rough water performance.

• Supplemental Notes:
  • Ocean Engineering, 11 <1984>, p.1 <No.1> (21 pp., 10 ref., 5 tab., 11 graphs, 2 diag., 7 phot.)
• Authors:
  • Calkins, D E
• Publication Date: 1984

Language

• English

Subject/Index Terms

• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00686253
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM