The W47 was an American thermonuclear warhead used on the Polaris A-1 sub-launched ballistic missile system. Various models were in service from 1960 through the end of 1974. The warhead was developed by the Lawrence Radiation Laboratory between 1957 and 1960.[1]
The W47 was 18 in (460 mm) in diameter and 47 in (1,200 mm) long, and weighed 720 lb (330 kg) in the Y1 model and 733 lb (332 kg) in the Y2 model. The Y1 model had design yield of 600 kilotons and the Y2 model had a doubled design yield of 1.2 megatons.
[2] The W47 was the first warhead with a new, miniaturized pit.[3] The aerodynamic flare[clarification needed] at the base provided stability of orientation during descent. Two small rocket motors were used to spin the warhead for better stability and symmetry during reentry.
^"LLNL Overviews By Decade - The Fifties" (PDF). National Nuclear Security Administration. Archived from the original (PDF) on 2008-10-15. Work continued at the Livermore and Sandia laboratories, and through the efforts of weapons designers and engineers, computer specialists, and other experts, the W47 Polaris warhead was created.
^"List of all US Nuclear Bombs". Nuclear Weapons Archive.
^John Pike. "W47". globalsecurity.org. Archived from the original on 2014-11-29. Retrieved 2014-12-14.
The W47 was an American thermonuclear warhead used on the Polaris A-1 sub-launched ballistic missile system. Various models were in service from 1960...
tested specimens. The Canadian Welding Bureau, through CSA Standards W47.1, W47.2 and W186, specifies both a WPS and a Welding Procedure Data Sheet (WPDS)...
for PGM-11 Redstone SRBM and SM-62 Snark cruise missile (cancelled 1958) W47 for UGM-27 Polaris A-1 and A-2 SLBMs (1960–1974) W49 for PGM-19 Jupiter MRBM...
place United Kingdom Media type Print (Hardcover) Pages 480 ISBN 0-241-13997-X OCLC 43501880 Dewey Decimal 823/.914 21 LC Class PR6069.M59 W47 2000b...
Welding Bureau. The CWB Group was formed in 1947 to administer the then, new W47.1 welding standard for structural steel. The CWB has today expanded its scope...
W33 in leap years W08 with W12 and W47 in common years and with W34 in leap years W10 and W45 W11 and W46 W12 and W47 W15 and W28 W16 and W29 W37 and W50...
States Media type Print (Hardback & Paperback) Pages 446 pp ISBN 0-316-28526-9 OCLC 40460011 Dewey Decimal 813/.54 21 LC Class PS3556.I8155 W47 1999...
Though derived from the W47, Sandia believed that as the non-nuclear components of the weapon would be lighter than those in the W47, with the gross warhead...
between those extremes.[citation needed] Of particular concern was Livermore's W47, which generated unacceptably high yields in one-point testing. To prevent...
Standards to which welders may be qualified: CSA W47.1 for steels (including stainless steels), CSA W47.2 for aluminum, and CSA W186 for reinforcing bars...
ballistic missiles and submarine-launched ballistic missiles. By 1960, with the W47 warhead deployed on Polaris ballistic missile submarines, megaton-class warheads...
Share". statcounter.com. Retrieved 22 March 2017. "Comparison from W34 to W47 2016". StatCounter Global Stats. "StatCounter Global Stats - Browser, OS...
(paperback edition) OCLC 57750790 Dewey Decimal 823.92 22 LC Class PR6101.H47 W47 2005 Preceded by PS, I Love You Followed by If You Could See Me Now ...
The warhead used the Kinglet primary, which it shared with the W55 and W47 warheads. The W58 design entered service in 1964 and the last models were...
and paperback) Pages 258 pp ISBN 0-670-81352-4 OCLC 15790818 Dewey Decimal 813/.54 19 LC Class PS3552.U75 W47 1987 Preceded by The Place of Dead Roads ...
Frigate Bird: on May 6, 1962, a UGM-27 Polaris A-2 missile with a live 600 kt W47 warhead was launched from the USS Ethan Allen; it flew 1,800 km (1,100 mi)...
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