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Newletters 2006

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Newletters 2006 The NEWSLETTER International Hydrofoil Society P. O. Box 51, Cabin John MD 20818 USA Editor: John R. Meyer Spring 2006 SEABUS-HYDAER: WING SUSTAINING MEMBERS ASSISTED HYDROFOIL oday there is a general need to transport passengers, cars and cargo Tby sea using methods that are safe, fast and cost-effective. European research is developing new types of ship to fulfill this demand. AEu- ropean project, SEABUS-HYDAER, is developing a completely new concept in marine transport: a hybrid between a plane and a ship. Al- though Seabus never leaves the water, most of its lift power is provided by its wings. This gives it the capacity to travel very fast. Ferries cur- rently in use have top speed of about 40 knots; Seabus beats this with a ______________________________ projected speed of about 120 knots (220 km/h) while using 20% less fuel. 2006 DUES ARE DUE Shown here are several renderings of the HYDAER concept. IHS Membership is still only US$20 per calendar year (US$10 for stu- dents). For payment of regular member- ship dues by credit card using PAYPAL., please go to the IHS membership page at <http://www.foils.org/member.htm> and follow the instructions. INSIDE THIS ISSUE - President’s Column -----------p. 2 - Welcome New Members -----p. 2 - Capt. Peterson Honored----- p. 4 - Foilmasters -------------------- p. 4 Rendering of the Seabus-Hydaer Concept - Foil Kayak ----------------------p. 6 The aim of the European project Seabus-Hydaer is the development of a new generation of Fast Ferries (>100 knots). Supramar is providing the - ASNE Day 2006 --------------- p. 9 help through the investigation of specific hydrofoils for stabilisation and - Sailor’s Page ------------------ p. 10 See Seabus-Hydaer, Page 3 PRESIDENT’S COLUMN WELCOME NEW MEMBERS William H. Buckley – Bill gradu- ated in 1948 from MIT with a BS in To All IHS Members These, together with many wall Aeronautical Engineering and a BS mounted pictures, and several hand- in Business Administration. For 20 I am encouraged to report the Soci- outs about the Society and hydrofoil ety’s continued growth with a total of years Bell Aerospace Co. employed questions and answers could consti- him as a structural engineer where 8 new members added to the IHS tute an attractive booth display. How- Membership roles during the first he was responsible for design loads ever, due to the short time available, of a VTOL research airplane and for three months of 2006. By the way, the Board is not certain it can do a you can view the Membership List by the US Navy’s first large air cushion credible job of assembling all the ma- vehicles and Surface Effect Ships. logging onto the IHS website and put terial and equipment. We are there- in the proper password. All IHS In 1971 he joined the David Taylor fore seriously considering partici- Research Center where he held po- members have been informed of this pation in ASNE Day in 2007. password. If you have been missed, sitions related to various advanced please contact the webmaster Those of us in the Washington D.C. marine vehicles including hydro- ([email protected]). It is advis- area were fortunate to be able to at- foils. He specialized in loads re- able for all to check the information tend a Joint Meeting of the IHS and search incorporating analyses of on the List. If it is incorrect, please the SNAME SD-5 Panel in March. casualties, statistics of non-linear send changes to: Steve Chorney: The subject was: Unmanned Sea Sur- waves, extreme waves and spectra [email protected] face Vessel Program-A Congressio- for long-term design loadings. In nally Initiated Program. The ONR 1982 he received a Masters degree Arecent report of fast ferry deliveries Unmanned Sea Surface Vessel in Ocean and Marine Engineering and orders indicates that the total (USSV) team has designed and built from the George Washington Uni- number for 2005 was 97. Catamarans two vessels, one of which is a versity. He is also a member of led the list with 76, five of which were semi-planing boat and the other a hy- SNAME and Sigma Xi. foil-assisted designs. This was fol- drofoil. The presentation reviewed lowed by monohulls at 9; and hydro- James Chafe – James is a Principal the program development work under Engineer and Vice President of foils at 8. See page 4 for an update on the auspices of the Maritime Technol- Ustica Lines and their Foilmasters. Maritime Applied Physics Corpora- ogy Alliance, summarized the design tion, Baltimore MD. He has special- The remaining 4 were hovercraft (2) and construction of the semi-planing, trimarans (1) and wavepiercers (1). ized in the fields of Thermodyna high-tow-force boat, and provided an -mics, Cryogenics, Naval Power IHS Board member and Publicity overview of the design, fabrication Applications, System Design, Pro- Chairman, Joel Billingsley, has been and initial testing of the hydrofoil. ject and Corporate Management. In in contact with the American Society As your President and Newsletter Ed- 1988 he joined Naval Surface War- of Marine Engineers in connection itor, I continue my plea for volunteers fare Center as a member of the Elec- with ASNE Day (see page 9) to be to provide articles that may be of in- trical Machinery Technology held in June in the Washington D.C. terest to our members and readers. Branch where he worked on a num- area. As a result, the IHS has been of- Please send material to me ber of advanced technology pro- fered a booth at no cost so we can set ([email protected]), Bill Hock- grams. In 1998 he co-founded up a display to make attendees aware berger (w.hockberger @verizon.net) Chesapeake Cryogenics to develop of the Society and publicize hydro- and Ken Spaulding (kbs3131 and market small cryogenic refrig- foils. The Board of Directors has been @erols.com). We will be pleased to eration systems. In 1999 he joined thinking about this possibility and all hear from you. MAPC and shortly after was ap- that it entails. The Society has several pointed to the position of Vice- DVDs containing videos of US Navy John R. Meyer hydrofoils and others of interest. President Continued on Page 12 Page 2 IHS Spring 2006 Seabus-Hydaer To improve the mixing layer be- distance of 850 kms. The project (Continued From Page 1) tween air, vapor and water, a modi- was led by Intermarine, a shipbuild- fied geometry of the NACA control ing yard in Italy. The concept fea- aerodynamic wings, using surface foil has been tested. A significant tures hydrodynamic control by effect, for lifting purposes and drag improvement has been obtained by hydrofoils rather than aerodynamic reduction. enlarging the injection slot. This im- control. These control hydrofoils provement, which has been reached are connected to the wing by verti- The main objective of the present at low velocities, should be more cal water surface piercing struts. Supramar technical support work is pronounced for full-scale condi- Separate V-shaped hydrofoils are the validation of the stabilising ca- tions. Furthermore, the relationship used to generate hydrodynamic lift pabilities of Air-fed foil profiles between flow-rates of injected air forces to assist in take-off to get the through an experimental investiga- and the lift coefficient was found hull out of the water before the air tion of a set of hydrofoils at reduced similar to the results already re- speed is reached for the wing to scale. Two control foils, a strut and ported in 1998 with the original ge- fully carry the weight of the vehicle. take-oft foils have been tested. Air ometry. As one of the eleven partners in the injection is provided on the suction project, NLR was responsible for and pressure sides as well as in the [Editor’sNote: leading and trailing edges. Tests are Investigations carried out in the LMH high-speed of air-fed sta- cavitation tunnel. bilization by Four different control and take-off Supramar goes Airfed profiles have been success- back many fully tested in the LMH high-speed years with only cavitation tunnel of the Swiss Fed- limited appli- eral Institute of Technology. Lift cation at that and drag coefficients as well as flow time, but has visualisations have been carried out now risen to to study the effect of injected air on the surface again.] hydrodynamic and cavitation per- Rendering of a Very Large Seabus-Hydaer Transport formance of these hydrofoils. In “Aerodynamic the aerodynamic analysis and the general, for air and/or vapor cavities Investigation of a Wing in Ground verification by wind tunnel tests. extending beyond the trailing edge, Effect” a technical report NLR also participated in the overall injecting air in the suction side leads (NLR-TP-2002-506) published by design activities as member of the to a decrease of the lift coefficient NLR (the National Aerospace Lab- Design Review Board that was while air injection in the pressure oratory of the Nether- lands) in 2002 formed during the project. The re- side is responsible of an increase of and was written by W. B. de Wolf. port describes the aerodynamic evo- the lift coefficient. This report highlights the activities lution starting with the initial design of NLR in the Seabus-Hydaer pro- Flow analysis, using experimental provided by Intermarine, some re- gram, performed under a contract and computation results, shows that sults of the aerodynamic calcula- awarded by the European Commis- air injection causes a change in the tions, the wind tunnel test and the sion. pressure field over both pressure main results obtained for take-off and suction sides.
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