The International Hydrofoil Society "The Hydrofoil Resource Site"

Sustaining Members of the International Hydrofoil Society

Joining with other hydrofoilers to support the IHS...

Island Engineering, formed in 1999, is dedicated to design and engineering support of high performance marine vehicles- primarily for the development of advanced ride control systems. These systems are analogous to an aircraft flight control system. Unlike traditional fin roll stabilization systems, a ride control system often reduces dynamic variations in pitch, roll, yaw and/or heave motions simultaneously- while concurrently maintaining list, trim, heading or height above the surface at user-defined values.  Proper design and implementation of the entire integrated system, from the effectors and their servo dynamics to the main control algorithm software, is essential in achieving the highest possible performance.

Island Engineering personnel employ 3D CAD/CAM, Algor FEMPRO FEA with MES, plus various vortex lattice and panel based CFD analysis tools to optimize the effectors for these systems. Sea-keeping simulations, model tests, a vast experience base and scientifically performed sea trials are also used to refine system parameters.

The most advanced IEI motion stabilization system, fielded jointly with Quantum Marine Engineering of Florida, is currently installed on the U.S. Navy’s LSC(X) ‘Sea Fighter’. The system consists of two actively controlled titanium ‘T’ foils mounted near the bow, two active transom interceptors, and two actively controlled flapped skegs for yaw control. System components are linked via an EMI resistant fiber optic LAN. 

‘Spectrum’ systems can be provided for vessels of all types in the 50-300’ range. IEI recently installed yacht trim tab systems on a 56 Ft monohull, as well as a 65 Ft catamaran built by Multihull Technologies in Florida.

Click Here to contact: Bmcfann@IslandEngineering.com

Maritime Applied Physics Corporation (MAPC) provides a mix of scientists, engineers, naval architects and technicians who are motivated to move ideas from concept through design and prototype. This work is performed for U. S. Government sponsors as well as commercial organizations. In most instances, MAPC works in the pre-competitive stage of development where the sponsor can use MAPC design materials and prototype hardware to obtain low cost production at low risk. MAPC maintains staff and facilities to prototype complex mechanical, electrical, thermal and electronic systems.

Capabilities:
Advanced technology systems design and prototyping including naval architecture, marine, mechanical, aeronautical, electrical and automotive engineering.
Conventional and advanced marine vessel design and fabrication
Seakeeping and hydrodynamic performance prediction
Vessel motion control system design, fabrication, installation and testing
Electrical system design and fabrication
Welding, fabrication and machining of all materials
3D solid modeling and animations
Tow tank model design and construction
Composite structure and cast urethane fabrication

Click Here to contact Mark Rice: mrice@mapcorp.com

HYDROSAIL Sailing Hydrofoils HYDROSAIL Ltd Liability Corporation (LLC) has over 50 years of experience designing, engineering, fabricating, and sailing hydrofoil boats and hydrofoil control systems. After designing a hydrofoil system that set world sailing speed records in 1979, the team at HydroSail moved forward to design hydrofoil systems which are practical for everyday sailors and racers! Whether coastal racing at over 30 knots, or just tacking out of a crowded harbor, these hydrofoils are a dream to sail.
HydroSail has the expertise to design boats of nearly any size which can fly fast. Designs for production boats, or custom racers from 16' to 60' can be built to meet one's needs.

Dr. Sam Bradfield's passion is sailing fast. He spent eight years teaching and researching at the University of Minnesota in aeronautical engineering before moving back to private industry and eventually to Florida. His expertise in fluid dynamics and advanced wind-powered watercraft eventually led from aircraft to sailpowered hydrofoils. He designed NF2, "Neither Fish Nor Fowl". NF2 captured and held the Class C world speed sailing record between 1978 and 1982.

Sam and his associates at Hydro- Sail, LLC, Mike McGarry and Tom Haman, set their sights on developing practical applications which could bring hydrofoil sailing and racing to regular folks. They developed foils for wind surfers and retrofits for existing multihulls. According to Mike, one of the problems with retrofits is that the original boats were not designed to handle the additional loads required to sail flat with hydrofoils. "It's much easier to design the boat right from scratch". Action photographs of 10 HydroSail, LLC prototype vehicles developed between 1973 and 2007 are shown on the website: http://members.aol.com/HYDROSAIL/
Current HydroSail design efforts are concerned with developing the electronic aspects of the sailing vehicle flight control system. The ultimate goals of the project are stabilization and comfort control of the vehicle.

 

Click Here to contact HydroSail LLC: hydrosail@aol.com