W49

The W49 was an American thermonuclear warhead, used on the Thor

PGM-17 Thor

Thor was the first operational ballistic missile of the U.S. Air Force . Named after the Norse god of thunder, it was deployed in the United Kingdom between 1959 and September 1963 as an intermediate range ballistic missile with thermonuclear warheads. Thor was in height and in diameter. It was...

, Atlas

Atlas (missile)

The SM-65 Atlas was the first intercontinental ballistic missile developed and deployed by the United States. It was built for the U.S. Air Force by Convair Division of General Dynamics at the Kearny Mesa assembly plant north of San Diego, California...

, Jupiter

Jupiter (missile)

The PGM-19 Jupiter was the first medium-range ballistic missile of the United States Air Force . It was a liquid-fueled rocket using RP-1 fuel and LOX oxidizer, with a single Rocketdyne LR70-NA rocket engine producing 667 kN of thrust...

, and Titan I

Titan I

The Martin Marietta SM-68A/HGM-25A Titan I was the United States' first multistage ICBM . Incorporating the latest design technology when designed and manufactured, the Titan I provided an additional nuclear deterrent to complement the U.S. Air Force's SM-65 Atlas missile...

 ballistic missile systems. W49 warheads were manufactured starting in 1958 and were in service until 1963, with a few warheads being retained until 1975.

The W49 has been described as a design derivative of the B28 nuclear bomb

B28 nuclear bomb

The B28, originally Mark 28, was a thermonuclear bomb carried by U.S. tactical fighter bombers and bomber aircraft. From 1962 to 1972 under the NATO nuclear weapons sharing program, American B28s also equipped six Europe-based Canadian CF-104 squadrons known as the RCAF Nuclear Strike Force...

 nuclear warhead design. It was 20 inches in diameter and 54 to 58 inches long depending on model, weighing 1,640 to 1,680 pounds, and had a design yield of 1.44 megatons

TNT equivalent

TNT equivalent is a method of quantifying the energy released in explosions. The ton of TNT is a unit of energy equal to 4.184 gigajoules, which is approximately the amount of energy released in the detonation of one ton of TNT...

.

See also

• PGM-17 Thor
  PGM-17 Thor
  Thor was the first operational ballistic missile of the U.S. Air Force . Named after the Norse god of thunder, it was deployed in the United Kingdom between 1959 and September 1963 as an intermediate range ballistic missile with thermonuclear warheads. Thor was in height and in diameter. It was...
  
  
• Atlas (missile)
  Atlas (missile)
  The SM-65 Atlas was the first intercontinental ballistic missile developed and deployed by the United States. It was built for the U.S. Air Force by Convair Division of General Dynamics at the Kearny Mesa assembly plant north of San Diego, California...
  
  
• PGM-19 Jupiter
  Jupiter (missile)
  The PGM-19 Jupiter was the first medium-range ballistic missile of the United States Air Force . It was a liquid-fueled rocket using RP-1 fuel and LOX oxidizer, with a single Rocketdyne LR70-NA rocket engine producing 667 kN of thrust...
  
  
• Titan I
  Titan I
  The Martin Marietta SM-68A/HGM-25A Titan I was the United States' first multistage ICBM . Incorporating the latest design technology when designed and manufactured, the Titan I provided an additional nuclear deterrent to complement the U.S. Air Force's SM-65 Atlas missile...
  
  
• List of nuclear weapons

External links

• Allbombs.html list of all US nuclear weapons at nuclearweaponarchive.org