UGM-73 Poseidon

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UGM-73 Poseidon UGM-73 Poseidon The UGM-73 Poseidon missile was the second US Navy nuclear-armed submarine- UGM-73A Poseidon C3 launched ballistic missile (SLBM) system, powered by a two-stage solid-fuel rocket. It succeeded the UGM-27 Polaris beginning in 1972, bringing major advances in warheads and accuracy. It was followed by Trident I in 1979, and Trident II in 1990. Contents Development Operators See also References Development A development study for a longer range version of the Polaris missile achieved by enlarging it to the maximum possible size allowed by existing launch tubes started in 1963. Tests had already shown that Polaris missiles could be operated without A Poseidon missile lifts off after problems in launch tubes that had theirfiber glass liners and locating rings removed. being launched from the submerged USS Ulysses S. Grant (SSBN-631) The project was given the title Polaris B3 in November, but the missile was in May 1979 eventually named Poseidon C3 to emphasize the technical advances over its predecessor. The C3 was the only version of the missile produced, and it was also Type Strategic SLBM given the designation UGM-73A.[2] Place of origin United States Service history Slightly longer and considerably wider and heavier than Polaris A3, Poseidon had the same 4,600 kilometres (2,500 nmi) range, greater payload capacity, improved In service 31 March 1971 to accuracy, and multiple independently targetable reentry vehicle (MIRV) capability. September 1992 MIRV capacity has been given as up to either ten[3] or fourteen W68 thermonuclear (Trident I phased warheads[1] contained in Mark 3 reentry vehicles to multiple targets. in from October 1979) As with Polaris, starting a rocket motor when the missile was still in the submarine Used by United States was considered very dangerous. Therefore, the missile was ejected from its launch Navy tube using high pressure steam produced by a solid-fueled boiler. The main rocket motor ignited automatically when the missile had risen approximately 10 metres Production history (33 ft) above the submarine. Manufacturer Lockheed Missiles Division The first test launch took place on 16 August 1968, the first successful at-sea launch Specifications was from a surface ship, theUSNS Observation Island (from July 1 to December 16, 1969), earning the ship theMeritorious Unit Commendation, and the first test launch Weight 64,400 pounds from a submarine took place on the USS James Madison on 3 August 1970. The (29,200 kg) weapon officially entered service on 31 March 1971. It eventually equipped 31 Length 34.1 feet (10.4 m) Lafayette-, James Madison-, and Benjamin Franklin-class submarines. Diameter 74 inches (1.9 m) Warhead 10 or 14 W68 warheads in Mark The Royal Navy also considered adopting Poseidon in the 1970s as an upgrade to its 3 RVs; approx. 40 Polaris A3T boats, and like the US this would have kept the existing hulls. Although kt yield each. the Navy's favoured option, the British government instead adoptedChevaline , a two warhead MRV system with decoys, on the existing Polaris airframes and later moved Engine Two-stage solid- to the Trident D5 in new boats. fuel rocket, each single nozzle with Beginning in 1979, 12 Poseidon-equipped SSBNs were refitted with Trident I. By thrust vectoring 1992, the Soviet Union had collapsed, 12 Ohio-class submarines had been commissioned, and the START I treaty had gone into effect, so the 31 older Operational With 14 RVs: range Poseidon- and Trident I-armed SSBNs were disarmed, withdrawing Poseidon from 2,500 nautical service. miles (4,600 km), with 10 RVs: Operators 3,200 nautical miles (5,900 km) United States Speed 8,000 mph United States Navy (13,000 km/h) (terminal phase) Guidance Inertial See also system List of missiles References 1. Poseidon C3 at MissileThreat.com (http://www.missilethreat.com/missilesoftheworld/id.92/missile_detail.asp) Archived (https://web.archive.org/web/20070929090614/http://www.missilethreat.com/missilesoftheworld/id.92/missil e_detail.asp) 2007-09-29 at the Wayback Machine. 2. Poseidon C3 at Spaceline.com (http://www.spaceline.org/rocketsum/poseidon-c3.html) Archived (https://web.archive. org/web/20060917002133/http://www.spaceline.org/rocketsum/poseidon-c3.html) 2006-09-17 at the Wayback Machine. 3. "W-68" (http://nuclearweaponarchive.org/Usa/Weapons/Allbombs.html). Retrieved from "https://en.wikipedia.org/w/index.php?title=UGM-73_Poseidon&oldid=858304444" This page was last edited on 6 September 2018, at 07:19 (UTC). Text is available under theCreative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of theWikimedia Foundation, Inc., a non-profit organization..
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