Hovering Craft & Hydrofoil Magazine August 1966 Volume 5 Number 11
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HOVERING CRAFT \ &HYDROFOIL THE INTERNATIONAL REVIEW OF AIR CUSHION VEHICLES AND HYDROFOILS # 3. :. If- Me- * /&,%d!.'Y ' --A- :+- ?.- .. -- --- . - r . --2-- Volume 5 Nqmnea I I KALERGHI PLIBLICATICINS I AUGUST 1966 d The SR.N5, the wo~ld'sfirst military hovercraft, is revolutionising logistics, carrying 15 fully-equipped troops or 2 tons of stores at cruising speeds up to 62 knots. In use with the U.S. Navy, and during operational trials with the British Forces in Borneo, it has proved to be unaffected by tide I state, underwater defences, shallows and the many obstacles which previously meant inaccessibility. Its work rate is many times that of conventional landing craft of comparable size and its amphibious capability gives maximum freedom of choice of operating routes and landing points. Patrols, trooping, supply, casualty evacuation, amphibious assault, search . .. and rescue, anti-submarine warfare, will all be transformed by British hovercraft. In addition to their operations with the British Forces in Borneo, SR.N5 hovercraft are in service with the U.S. Navy. Both the 7-ton SR.N5 and the %ton SR.N6 with its much larger capacity are now available from the world's first hovercraft production line. Modern fighting forces have a : .-.-- - completely new weapon. d 19 6 6 1*c ,.1 A*&" / ,n,,- .,. , .,, ,,,5,,.,3 A....AC. ,,",.,O british hovercraft corporation limited I.L.ac,.~ nrll ,> I I* YEOVIL ENGLAND HOVERING CRAFT & HYDROFOIL FOUNDED OCTOBER 1961 J~t!ion Rice, (left), Frrirbrr~zks attortacy, and Larry Lwdry, At~~:irorcrgeb~r.ritze.vs man, displuy a modal of the 18 posscnger 1tovo.cralr their new organisariot~ Skimmers Iltc. il ill bring lo First Hovering Craft & Hydrofoil Monthly in the V'orld Ancltoragc this month. See be101 for jro/ltc,r rletrtils F any further evidence was needed of the vxhe of the June The result is a 30-day experinlent at Cook Inlet jointly I Hovershow, it is provided by a news report from far-off carricd out by Skimmers, Inc., a firm established by Rice and Alaska. There, an 18-passenger hovercraft has just started an Landry for the purpose, and Bell Aerosystems, the American operation unique in American transport history. The two men licensees of Westland. behind the experiment found their inspiration in Britain and Two hovercraft have been taking part in the experiment. particularly at the Hovershow. Each can carry 18 passengers or 5 tons of freight. This is the Their names are Julian Rice and Larry Landry. They had first hovercraft commercial charter operation in the Western for some time been considering how best a transport business Hemisphere. 1 h could function in the difficult conditions to be found at the "We believe the introduction OF hovercraft in Alaska will port of Anchorage, Alaska. Oil Installations in Cook Inlet revolutionize the transportation industry particularly in those needed a reliable transport service of passengers and freight areas previously inaccessible by conventional modes of trans- which could operate on winter ice as well as choppy summer portation," says Mr. Landry. waters. Rice and Landry knew of the hovercraft service between "The two craft are equipped Lo operate under 'zero-zero' Oakland and San Francisco, the only such service in the conditions. Weather, for all practical purposes, will be no United States. ,But in California there are no ice hazards and obstacle in our operation," he said. the craft in use there are for passengers only. To find if there The port commission at Anchorage has welcomed the was a suitable hovercraft for Alaskan conditions they decided project. It promises to improve transport in the area and to to come to Britain to consult the hovercraft pioneers. They assist in (he exploration and exploitation of natural resources visited Westland Aircralt Ltd., and other firms. They were and the development of isolated territories across the inlet. impressed. But no final decision was taken. They returned to Such is [he hope. It is too early yet to speak of fulfilrnenl. Anchorage, looked at their problem again, and then returned to But this is a pioneering enterprise that can at once be Britain for the Hovershow. There, the superb demonstrations commended and should hearten all those who made the first they saw helped to make up their minds. Hovershow possible. IN THIS ISSUE ~ August 1966 Vol 5, NO 1 l 1 People and Projects 4 Editor ; The Wave Resistance of a JUANITA KALERGHI Compartmented Cushion 6 HOVERING CRAFT AND HYDROFOIL is produced by Kale~ghi Prrblicntiorrr, .SO-(.! lllrrrrdlo,d Srr-ccr, Lo,rrlo,r. Seaspeed Spearheads LVI Tcleplione WELbeck 8678, l'rirrteil in Grew Urirairr British Rail Potential 10 IIY Vrllrers Publicatiorrs. Lorrdoii, NW.5. A~irrr,alsrtl~sorp- [ion: Five Girineas UK and equivnlerrr overseas. USA Letters to the Editor 11 and Canada $15. There ore twelve issrres arrnrmlly. The History of Hydrofoils 14 Contents of this issue are rhe copyrifiht of KnleryItr Publicafions. Permission ro rcprodrrce pictrrres and texr The Small Hydrofoil Prototype car1 be granted orrly under \vrirtr.n ogreetnent. Extracrs to the Stryela 16 or conrrr~ents rnay be made with dire rrckt~o~vledgenrer~r to Hoverins CroJl and Hydrofoil. The Hovercraft and Problems of ADVERTISING REPRESENTATlVES Port Development 18 GREAT BRlTAIN & EUROPE: Iritcrrrorionol Graphic Press Lld, 2 Dyers Buildings, Lo~rdorr. ECI; JAPAN: 1 Across the Channel by Hovercraft 21 Japan Trade Service Lld, Masami Brrilding. 1-30 Ka~rrlrr Jimboclto, Chiyoda-ku, Tokyo, Japan; HOLLAND: Norway's Hovercraft Legislation 22 G. Arnold Tcesirrg, Amsterdam-2, Krrber7ssrranr 68, Holland A Revolution in Transport 26 COVER PICTIJRE: An rrrrist's impression of /lie protolype hydrofoil gunboar desigrred urid co~rsrructc,d by Crrtmrnotz Aircrufr for tl?c US Nuvy. The cruft is 22 rn 86 long, with o 6 rn 70 beum und rr 57 ton displtrcernertr. The foilborrr:, l>roprrlsior~system ~11ill be mcritrlrrincd by o 3,600 Irp rnorinr vcwion of the Rolls-Royce "Tynr," gus trrrbine erzgitic. A drtr~l.ingof the cltginc, rrppctrrs 011 pogc 5. Mr Htrrold Wilsotr, rlrc Brirish Prinie Minisrcr, l)t.escri/ed Mr Kosy~ir~.R~tssiior Prerrrier, ~c.irlr u modcl of n Wcs~lund hoi~er- c.r-crff ~.lretrIro visilcd tlrc Rritisli lrrdrrs~rirrl Exlrihiriotr in Mosco11. on ~lrc17/11 Jrrlv, 1966 People and Projects The noei~tgContpany, Seattle. Washington. are constl-ucting The ,folloil.itt~ i.s hnserl or1 (1 sltor-I trrriclc by 111.o Sovicv a hydrofoil gunboat for the US Na\y. Designated PGH?, the ctigitrcers, N. Zulslov,ski~urld .T. Mnl'cliik, it1 rlrc Jrrtie ti~tt7ih~r craft has a length of 71 ft (21.64 m), a beam of 25 ft (7.62 m) of Ryechnoy Transport, monrhly orgurz of rlrc, Millistry of rlrc and a displacement ol' about 60 tons. The propulsion system River Flee/ oJ /he Urtssinrr Fcdrruriorr of .Soriali.st Kepublics: takes the form of water jets. Water is drawn through rear struts One of the psoblcrns facing the operators ol' hydrofoil pa,;- into a centrifugal pump and is ejected rhrough nozzles near the senger services on the Volga and other ercat rivers of the USSR stern. One of the major advantages claimed for this systeni is (especially during thc summer season, whcn they work to capa- its simplicity in operation and maintenance. A water jet does city) is that of keeping the cntire fleer in scrviccable condition no( require a complicated power transmission system and there- without withdrawing units from servicc. This involvcs frequent fore eliminates any nssociatcd lubrication problems. The engine docking of units during thc night. when the services are. for the is directly connected lo the pumps and forms an easily acces- most part at any rate, suspended, and in the normal way tlierc sible, compact uni~. have been occasions \\.hex damage has bcen done to the The water jet will be used for propulsion \\hen the cral't is vcsscls' hulls, more particularly in thz blu(l of the bow. using its conventional hull and when using the I'oils. In the In order to eliminate the risk of such damage. the Volgograd former condition a Buehler centrifugal pump will be driven by (formerly Stalingrad) Section of the Gor'ki C'cntral Design a 150 hp diesel engine. and in thc latter casc a Byron Jac!;son Bureau has introduced the use of a floating crane with a lift punip will be powcrcd by a gas turbine. ol' 42 tons for lifting tlic hydrofoil vessel out of the water and Three fully submerged foils will support the craft at high placing it on keel-blocks in a lighter alongside, and replacing speeds and are fully retractable for slow-speed operation. Their if in the water aftcr cxamin:~tion and, if neccss;irp, repair. stability will be controlled by an automatic electronic system. The floating crane used for this purpose is one of an exist- With the exception ol the foils and struts, which are stainless ing type known as !he "Staryy Burlak", reinl'orced with longi- steel, the hydrofoil is of aluminium construction. Armament tudinal beams and with supporting pillars undcr thc winches. will comprise a 40 mrn gun forward, an 8 1 mm mortar aft, and Such a crane can lift vessels of the 12nketu and Meteor types, twin 50 calibre machine-guns on each side of the bridge. carrying 66 and 150 passengers respectivcly. which are at * * * present in use on the rivers of the USSR. Hard ballast weighing During its first year of operations. Hovertravel, which 30 Ions is provided ;IS counterbalance for the vesscl lil'ted, and operates services across the Solent. has carried 302,640 pas- by this means the change of trim when lifting a vcssel of the J sengers on 15,000 trips involving 61,000 miles between Ryde, larger Meteor type is kept to 0.12 m (4) in).