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RECREATIONAL HYDROFOIL CRAFT the NEWS LETTER

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RECREATIONAL HYDROFOIL CRAFT the NEWS LETTER The NEWS LETTER International Hydrofoil Society PO Box 51 - Cabin John MD 20818 - USA Editor: John Meyer Fourth Quarter 2013 Sailing Editor: Martin Grimm RECREATIONAL HYDROFOIL SUSTAINING MEMBERS CRAFT By Ray Vellinga, IHS Member Harry Larsen’s recreational Talaria IV represents the state of the art for ALL hydrofoil craft. Undoubtedly those are fighting words for battalions of retired Boeing, Lockheed and Grumman engineers. Of course, their computers had less power and memory than your smart phone, and on occasions they were forced to fabricate foils and struts from relatively heavy steel. Today’s Talaria has submerged forward and aft foils of carbon and glass fiber. Her stability and control system is way beyond the mili- tary and commercial behemoths of yesteryear. Harry’s custom-built solid state digital computer controls roll, pitch, height, and yaw rate. Only turning is manually controlled, by the steering wheel, and the HAVE YOU PAID YOUR computer balances the turn by rolling into it. Two splayed ultrasonic 2013 IHS DUES? IF NOT, height sensors at THEY ARE OVERDUE the bow provide See Full Announcement on input to the com- Page 12 puter to activate servo valves that are piped to hy- INSIDE THIS ISSUE draulic actuators. The hydraulic - President’s Column...... p.2 cylinders contin- - Welcome New Members. p. 2 uously adjust the flaps and the - IHS at HIPER 2013...... p.6 forward foil’s an- Talaria IV foilborne on Lake Washington gle of attack. In - TWIN VEE.............p.6 addition, through - IHS Needs Your Help.....p.7 this computer link, as flying speed increases the angle of attack of the main-foil flaps is reduced to maintain a constant hull pitch. - From the Board Room....p.8 See Recreational Hydrofoils, Page 3 - Sailor’s Page...........p.10 WELCOME NEW MEMBERS PRESIDENT’S COLUMN Ronald K. Kiss - Mr. Kiss is Presi- dent Emeritus of the American So- To all IHS Members website and questions can be sent ciety of Naval Engineers, and a to: [email protected]. I urge all member of the Society since 1969, As noted on the IHS website, we IHS members to forward informa- served two terms on Council have embarked on a wide range of tion on the prize to others who may (1979-80, and 1984-85) and was initiatives aimed at increasing be interested. Best of luck to all elected Vice President in 1998. A awareness of hydrofoil and hydro- those who compete! Planning con- life member, he has served on the foil related technology develop- tinued for the Navy Hydrofoil Re- Awards Committee for six years in- ments around the world. The Board union to be held in Key West on cluding a period as Chairman. Most has had lengthy discussions and 20-23 September 2013. The next recently he served as a member of concluded that it is critical to in- issue of the Newsletter will include the Joint Strategic Alliance Com- volve the membership to accom- a Reunion report. As noted on the mittee from 2005 to 2008. He has plish these objectives. There is website, IHS participated for a sec- presented several papers at ASNE simply too much work to be done to ond year at the Tacoma Maritime Day and been a banquet speaker at rely totally on the Board members. Fest on 24-25 August 2013. Fest in- ASNE symposia. Accordingly, I encourage and so- formation can be found at: licit your active involvement in the http://www.maritimefest.org Ray A graduate of Webb Institute, he work of the Society. Vellinga has provided a report and earned a Master’s degree in naval Many of these support activities can photos; see page 9. Thanks to Ray, architecture from the University of be done at home over the internet or we now have a new photo section California, Berkeley. After a nine- phone and can be at any level of en- on the website – just click on the teen-year career at the Maritime gagement that volunteers are will- “Photos New” button. Administration where he last served as Acting Associate administrator ing and able to provide, either On 13 June, the Board of Directors for Shipbuilding and Ship Opera- one-off or ongoing. I urge all of you held a regular meeting, at which tions, he joined NAVSEAas Assis- to consider where you might help in several initiatives were discussed, tant Deputy Commander for furthering these efforts. Please con- including plans for a permanent hy- Surface Ship Acquisition in 1982. tact me at: [email protected] if drofoil exhibit at the Washington He was serving as Deputy Assistant you’re interested. Navy Yard. This is covered in more Secretary for Ship Programs in detail by Joel Billingsley on page 8. Since the last issue of the Newslet- 1996 when he retired. After serving On the subject of new members, we ter, we had a Joint Dinner Meeting as Vice President for systems devel- urge all of you to recruit colleagues on 30 May 2013 with SNAME opment at Syntek, he returned to and others to increase our numbers Panel SD-5 at the Army-Navy Webb Institute in 1998 as Executive and bring new talent into the Soci- Country Club. The technical pre- Vice President. He became presi- ety. Our goal is to exceed last year’s sentation given by Philip Wasinger dent in 1999 and served in that role numbers by a reasonable amount. of MAN Diesel North America was for six years and is now President, As always, please consider your on “LNG Fuel for Advanced Emeritus. Ships”. The meeting was well at- Newsletter Editor’s plea for volun- tended and the complete presenta- teers to provide articles of interest Since retirement from Webb, he has tion is posted at: www.foils.org. to our members and readers. Please been engaged in consulting and pro e-mail material to John Meyer at bono activities such as serving on We have continued to publicize the [email protected]. John will be the Marine Board of the National Mandles Prize for Hydrofoil Excel- pleased to hear from you. Academy of Science (NAS), serv- lence. Background for the Mandles ing on or Chairing NAS study com- Prize and Rules for the competition Best regards, can be downloaded from our Mark Bebar, IHS President Continued on Page 12 Page 2 IHS Fourth Quarter 2013 RECREATIONAL HYDROFOILS This flying machine was at the cut- (Continued From Page 1) ting edge of personal watercraft de- velopment. In fact, the product was To summarize briefly the history of successful with over 500 units sold recreational hydrofoils up to today, at prices up to $3,500 before pro- here is an excerpt, including extra duction ended in August 1980. photos, from Chapter 1 of Hydrofoils: Design, Build, Fly (available at Ama- zon.com): The first personal fun hy- Hifybe, High Flying Banana recently. Meacham Boat DynaFoil in action The Hi-Foil, shown below, was mar- drofoil was probably created by the keted about 1970 by Anglican Devel- A prototype sailboat called the Avo- Meacham Brothers, Chicago, be- opment Ltd on the Isle of Wight. This cet was the product of a joint effort tween 1895 and 1916. British personal hydrofoil seats 2, has between Greg Ketterman, an Ameri- motorcycle steering, and is powered Personal hydrofoils. concurrent with can entrepreneur, and Yamaha Mo- by a 25 hp long shaft outboard motor. the Navy’s program, private industry tors’sR&DCenter led by Kotaro and individuals developed various Horiuchi. The Avocet evolved into small personal hydrofoils, including the TriFoiler and Ketterman’s com- several prototypes created by the au- pany, thor. Hi-Foil 30 Early (failed) attempt by the Shortly thereafter, in Orange County, author to create a flying California, David Cline was creating motorcycle. the Dyna-foil. The Avocet Trifoiler Hobie Cat, Co. manufactured them in the 1990s. Both trimarans have two mainsails, one on each outrigger. In 1993 the Avocet boat set a class A re- cord of 43.55 knots over a 500 meter course in Tarrifa, Spain. In 1998, Dr. Sam Bradford (recently deceased) designed the Rave Hydro- 1969 photo of SabreFoil, author, Dynafoil configuration and his intrepid father-in-law Continued on Next Page IHS Fourth Quarter 2013 Page 3 RECREATIONAL HYDROFOILS These boats feature carbon-fiber hulls ered hydrofoils, like the two shown (Continued From Previous Page) and foils. Each boat has two inverted being launched. In Australia the “T” foils, one mounted in the center- Moth class sailboat is evolving into foil trimaran for production by board slot and the other in place of the an exciting racing machine. The Windrider LLC. Two years ago on rudder. Under sail-power, their maxi- French Hydroptère and the British Mission bay in San Diego I was in- mum speed is about 30 knots. Vestas SailRocket are sailing at re- vited to co-pilot a Rave. With two cord speeds. My Hifybe, and Harry people it took about 8 knots of wind to About the same time as the Avocet’s Larsen’s Talaria IV,are two examples become foil borne. My host reported record runs, human powered hydro- of the motor-powered hydrofoil evo- that his boat sails at 1.5 to 2 times the foil boats were pushing the limits. In lution. wind speed. The boat was a real thrill 1991, a team from MIT led by Mark to fly. Dr. Bradfield is also credited Drela, PhD. created the Decavitator with designing the NF2, Neither Fish which set the present record of 18.5 Nor Fowl. This hydrofoil sailboat knots over a 100-meter course and held the Class C world speed sailing won the DuPont prize for the fastest record between 1978 and 1982.
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