Novi brodovi - potreba za brzinom

1

Novi brodovi - potreba za brzinom

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  • Pridružio: 02 Avg 2008
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Citat:BATH, Maine – The Navy's need for speed is being answered by a pair of warships that have reached freeway speeds during testing at sea.

Independence, a 418-foot warship built in Alabama, boasts a top speed in excess of 45 knots, or about 52 mph, and sustained 44 knots for four hours during builder trials that wrapped up this month off the Gulf Coast. The 378-foot Freedom, a ship built in Wisconsin by a competing defense contractor, has put up similar numbers.

Both versions of the Littoral Combat Ship use powerful diesel engines, as well as gas turbines for extra speed. They use steerable waterjets instead of propellers and rudders and have shallower drafts than conventional warships, letting them zoom close to shore.

The ships, better able to chase down pirates, have been fast-tracked because the Navy wants vessels that can operate in coastal, or littoral, waters. Freedom is due to be deployed next year, two years ahead of schedule.

Independence is an aluminum, tri-hulled warship built by Austal USA in Mobile, Ala. The lead contractor is Maine's Bath Iron Works, a subsidiary of General Dynamics.

Lockheed Martin Corp. is leading the team that built Freedom in Marinette, Wis. It looks more like a conventional warship, with a single hull made of steel.

The stakes are high for both teams. The Navy plans to select Lockheed Martin or General Dynamics, but not both, as the builder. The Navy has ordered one more ship from each of the teams before it chooses the final design. Eventually, the Navy wants to build up to 55 of them.

Speed has long been relished by Navy skippers. Capt. John Paul Jones, sometimes described as father of the U.S. Navy, summed it up this way in 1778: "I wish to have no connection with any ship that does not sail fast; for I intend to go in harm's way."

Eric Wertheim, author and editor of the U.S. Naval Institute's "Guide to Combat Fleets of the World," said speed is a good thing, but it comes at a cost.

"This is really something revolutionary," Wertheim said. "The question is how important and how expensive is this burst of speed?"

Early cost estimates for Littoral Combat Ships were about $220 million apiece, but costs spiraled because of the Navy's requirements and its desire to expedite construction. The cost of the ships is capped at $460 million apiece, starting in the new fiscal year.

Both ships are built to accommodate helicopters and mission "modules" for either anti-submarine missions, mine removal or traditional surface warfare. The goal is for the modules to be swapped out in 24 hours, and no later than 96 hours, allowing the ships to adapt quickly to new missions, said Cmdr. Victor Chen, a Navy spokesman.

While they're fast, they aren't necessarily the fastest military ships afloat. The Navy used to have missile-equipped hydrofoils and the Marines' air-cushioned landing craft is capable of similar speeds, Wertheim said. And smaller ships are capable of higher speeds.

Nonetheless, the speed is impressive, especially considering that other large naval vessels have been cruising along at a relatively pokey 30 to 35 knots for decades.

Loren Thompson, a defense analyst at the Lexington Institute, noted that Independence sustained 44 knots despite a 30-knot headwind and 6- to 8-foot seas in Alabama's Mobile Bay. "For a ship of this size, it's simply unheard of to sustain that rate of speed for four hours," he said.


http://news.yahoo.com/s/ap/us_speedy_warship





Potrudicu se da prevedem cim budem imao vremena.

Nego, vredi li ovo nesto, i cime bi uopste bio naoruzan?



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  • član biblioteke
  • Pridružio: 18 Jul 2007
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Odokativno: napred ima top 5" i dva bloka vertikalnih lansera.



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  • Pridružio: 30 Maj 2007
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Na ovoj adresi više o celom programu i konceptu LCS brodova klase "Freedom" http://www.gdlcs.com/lcs-program

Ko više voli viki http://en.wikipedia.org/wiki/USS_Independence_%28LCS-2%29

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  • marat 
  • Zaslužni građanin
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aramis s ::Odokativno: napred ima top 5" i dva bloka vertikalnih lansera.
napred je 57mm bofors

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Citat:Early cost estimates for Littoral Combat Ships were about $220 million apiece, but costs spiraled because of the Navy's requirements and its desire to expedite construction. The cost of the ships is capped at $460 million apiece, starting in the new fiscal year.

Ukratko, kosta duplo vise od planiranog i jos prostije: preskupo.

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Već nekolko godina experementišu i sa ovim tipom brzog transprtera.




HSV-2 “SWIFT”

Brod je izgrađen u australijskom brodogradilištu Incat u Horbaru na Tasmaniji.To je brod rađen potpuno od aluminijuma za komercijalne potrebe ali je militarizovan za potrebe američke vojske i koncepcije modernog rata.Bazira u mornaričko amfibijksom centu Little Creek u Virdziniji.

Taktičko - tehničke karakteristike:

Istisnina : 1,668 tona pun kapacitet,
940 tona standard
Dužina: 321.5 ft (98.0 m)
Širina: 88.6 ft (27.0 m)
Ispod vodene linije: 11.15 ft (3.40 m)
Pogon: Caterpillar 3618 brodski dizel motori
Brzina : Max: 53+ mph (85+ km/h or 45+ knots)
Krstareća brzina: 34+ mph (55+ km/h or 30+ knots)
Raijus: 4,000+ milja (6,500 kilometara/3,500+ nautičkih milja)
Capacitet: Oko 605 tona (615 metric tons); oko 28,740 sq ft. (2,670 kvadratnih metara) Kargo prostor.
Naoružanje: MK 96 w 25mm/40mm Stabilized Gun; MK 45 Snake Eyes sa MK 19 Lanser granata

Piskarao sam malo o njemu ovdje :

http://www.brodovi.net/?p=750

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  • gloyer  Male
  • Legendarni građanin
  • Pridružio: 23 Feb 2007
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  • Gde živiš: Banat

Vidim imaju heliodrome, pa me zainteresovalo, da li brod mora da stane da bi helikopter sleteo, ili ima neki način sinhronizacije brzine?

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  • Pridružio: 26 Maj 2009
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USS Mobile Bay Completes Extensive Modernization Upgrades

Arrow http://www.defencetalk.com/uss-mobile-bay-complete.....des-25914/

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  • Pridružio: 27 Dec 2007
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Ovakva brzina kod katamarana možda još ide ali kod klasične forme barem za brod takve veličine je bez potrebe. Za to su potrebni jaki motori, koji troše puno goriva a u 99% upotrebe ovakva brzina nije ni potrebna.

Sličan promašaj ovakvo snažnog pogona su kod nas uradili na klasi Končar. Bog jakih vibracija na kraju je bila brzina ograničena na 40 čvorova, ma da bi brod išao čak mnogo brže. Zbog dometa raketa ovakva brzina nije bila potrebna.

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  • djboj  Male
  • Super građanin
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Napisano: 15 Apr 2013 21:53

Новейший боевой корабль ВМФ США Coronado загорелся на полном ходу

Во время испытаний в открытом море загорелся новейший боевой корабль прибрежной зоны ВМС США, сообщают в понедельник зарубежные СМИ.
Пожар на борту боевого корабля Coronado возник в прошлую пятницу на второй день ходовых испытаний в Мексиканском заливе, подтвердил официальный представитель ВМС США.
«По предварительным данным, ЧП не повлечет за собой длительную задержку для морских испытаний судна»
«Никто в аварии не пострадал, и, по предварительным данным, ущерб был незначительным», – приводит слова чиновника DefenseNews.

http://www.eurasian-defence.ru/content/%D0%BD%D0%B.....0%B4%D1%83

Dopuna: 15 Apr 2013 21:55

WASHINGTON — Fire broke out aboard the littoral combat ship Coronado late Friday morning while the vessel was on its second day of sea trials in the Gulf of Mexico, a U.S. Navy official confirmed Saturday.

No one was injured in the accident, and early indications are that the damage was minor, the official said.

The incident happened as the ship was conducting a full-power demonstration and running at high speed. Insulation on the starboard diesel exhaust first smoldered, then ignited but, according to the official, the flames were “extinguished immediately.”

http://www.defensenews.com/article/20130414/DEFREG.....inor-8217-

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