sea spire nautical hydrofoil boat - rdc aqualines · hydrofoil. the boat creates a new niche of...
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AeromarineTransportConsortium
603002,Russia,NizhnyNovgorod,Sovetskayast.12;t/f.:(831)277-62-28,277-62-29;www.rdc-aqualines.ru
SEASPIRE
NAUTICALHYDROFOILBOAT
Maincharacteristics:Lengthoverall,m8.0LengthaccordingtoKVL,m8.0Overallwidth,m2.5WidthaccordingtoKVL,m1.75Staticdraft,m1.8Draftonthemove,m0.48÷0.75(dependingonthespeed)Sideheight,m1.16Displacement,t2.0Crew+passengers,people1+5Maximumspeed,knots(km/h)40(74)Seaworthiness(waveheight),m1.5Range,km120Enginepower,(diesel/petrol),hp200/250
Purposeofthevessel
Nautical taxi. Maintenance of sea passenger lines with a length of 20 ÷ 120 km. Thevesselwillcompetewithferriesduetotriplethespeedoftrafficandamoreflexiblescheduleofflights.Themostprofitableareflightswiththeextentof80÷100km,whenbusinessvisitsbyferrydonotfitintooneworkingday.
Also,theboatmaybeofinteresttofansofactivewaterrecreationasaclosedhydrocyclehydrofoil.
Theboatcreatesanewnicheofwatertransport,characterizedby:
-Highmobility,thankstosmalldimensions(auto-size);
-theabilitytotransportpassengersona1.5meterwaveataspeedof45km/hwithlivingconditions higher than classic gliding boatswith "deep V" or any otherwater vehicles atcomparablespeed;
-higheconomicindicatorsincomparisonwithallsimilarinspeedtypesofvessels;
- commercial attractiveness: the overall length of 8 m significantly reduces the cost ofparkingandmaintenanceinmostmarinasintheEuropeanUnionandinothercountries
Engine
Therearetwovariantsofengines:-dieselOXEbrandCIMCOMarineAB(Sweden)Type:TurboDieselIntercoolerWorkingvolume:2.0litersNumberofCylinders:4Thetwistingmoment:370NanometersCapacityof200hpat4300rpmWeight:300kgLengthofdeadwood:30"(762mm)-gasolineE250DPZbrandEvinrude(Canada)Type:gasoline,atmospheric,injector,V-shaped¬¬Workingvolume:3.3litersNumberofCylinders:6Power:250hpMaximumoperatingrange:4500-5800rpmWeight:240kgLengthofdeadwood:30"(762mm)
EXPECTEDPERFORMANCEOVERVIEW
RefertotheissueofcalculationoftheexpectedoperationalcostsforRDCSeaSpireseafoilboat,thefollowingfiguresemerged.
• Theexpectedfuelconsumptionperonepassenger/kilometeris0,06litersofdiesel;• ThecurrentcostofdieselinRussiais1,5USDforoneliter;• Thus,thefuelcostfor1kilometeroftravelwillbeapproximately0,01USDperonepassenger;• World statistics of the storage andmaintenance annual cost for speedboats show that thisparameterusually isabout10%oftheboatvalueperoneyearofoperation.Consequently, forSeaSpireitwillbenothigherthan$12’000peryear.Refertothecomparisonoftheperformanceofstandardspeedboat(glidinghull)andtheRDCSeaSpireseafoilboat,thefollowingfiguresemerged.
Withthesamedisplacement(2tons),andthesamelengthoftheboat(8meters),theSeaSpireboatwillneed150h.p.engine(currently,the200h.p.ischosentoprovidetheabilityforcruisingonthe1,5metershighwaves).Initsturn,theglidingspeedboatofthesamedimensionswillneed250h.p.
Thecomparativedataofperformanceispresentedinthechartbelow:
Comparedcharacteristics SEASPIRE GLIDINGSPEEDBOAT
Displacement 2tons 2tons
Lenghtoftheboat 8meters 8meters
Minimumrequiredenginepower 150h.p. 250h.p.
Levelofoverload
whilecruisingonthewaveh3%=1meter,
withthespeedv=45kmh
1,5g 9g
Fuelconsumption 25liters/hour 40liters/hour
Herewith, while cruising on the 1 meter high wave, the expected level of the overloadonboard of the Sea Spire boat (which apparentlymeans the level of passengers comfort) will beabout1,3g–1,5gwiththespeedlevelof45kmh.
For the gliding speedboat cruising on the 1meter highwave, level of the overloadwill reach 9g,whichiscomparableforthepassengertotheshakingontheextremeamusementride.
Todecreasethelevelofoverloadto1,5gtheglidingspeedboatwillhavetoreducethespeeddownto10-15kmh.Withoutreductionofspeedthesamelevelofonboardcomfortmaybeprovided
bytheglidingspeedboatwiththedisplacementof18tons,length20meters,withthehullofahighdeadrise.Suchavesselwouldrequiretheengineof2000h.p.withthefuelsconsumption250litersperhour.
For the practical analysis of expectedperformanceofthesetwotypesofboatsintermsof fast marine transport services, the existingoperational route line may be taken as theexample(Tallinn–Helsinki,BalticSea(80km).
For the analysis the sea conditions of the waveh3%=1meterarepresumed,sotheboatswillhavetomovewith the different speed to provided theappropriatepassengercomfort.
This routewill be takenbySeaSpire almost fivetimes faster than by the standard glidingspeedboat which provides additional competitiveadvantageonthemarinetransportservicemarket.
Thecomparativedataofperformanceispresentedinthechartbelow:
Comparedcharacteristics SEASPIRE GLIDINGSPEEDBOAT
Cruisingspeedontheroute
withthewaveh3%=1meter45kmh 15kmh
Timetodestination 1hour47minutes 5hours18minutes
SUMMARY:
Thus, it is evidently justified that RDC Sea Spire boat have the following expectedperformanceadvantagesinrelationtothestandardglidingspeedboat:
1. Lowerfuelconsumption;2. Highercruisingspeed;3. Higherpassengercomfortinthetoughseaconditions(uptowaveh3%=1,5meter).
Theseoperationaladvantagesallowtoclaimthatthistypeofboatmaybesuccessfullyappliedforthe various transport tasks that require high speed marine vessels: passenger and cargotransportation;searchandrescueonwater;controlandpatrollingofwaterareas.