|Used by||United States|
|Produced||July 1952 to February 1963|
|No. built||3,050 to 3,150 weapons produced in all variants.|
|Mass||1,600 pounds (730 kg)|
|Length||15 feet 2 inches (4.62 m)|
|Diameter||30 inches (76 cm)|
|Blast yield||8, 19, 22, 30, 31, and 61 kt by using different weapon pits.|
Mark 7 "
The Mark 7 was a variable yield fission weapon using a levitated pit and an implosion design using 92 high explosive lenses. The weapon had multiple yields of 8, 19, 22, 30, 31, and 61 kt by using different weapon
The Mark 7 nuclear weapon weighed approximately 1,600 pounds (730 kg). It was fitted with one vertical retractable stabilizer fin that allowed it to fit better in or under some planes. This was unique, and made it one of the first nuclear weapons to be streamlined enough to be carried on smaller planes. The bomb’s diameter is a total of 30 inches (760 mm).
There were 10 different models of this warhead produced for several different delivery systems. Beside the Mark 7 bomb, this included the
Configured as a Mark 7 gravity bomb and as the BOAR, the weapon was carried by the F-84 Thunderjet, F-100 Super Sabre and F-101 Voodoo fighter-bombers, and the B-57 Canberra bomber.
During Operation Teapot MET on 15 April 1955 a test was conducted using a Mk7 warhead using an experimental composite plutonium/uranium-233 pit, producing a 22kt yield, 33% lower than expected. As Shot MET was a military effects test the lower yield ruined many of the experiments being conducted by the DoD during the test. The DoD had not been informed of the substitution by Los Alamos.
T2 Atomic Demolition Munition
An Atomic Demolition Munition (ADM) called the T2 was considered starting in February 1953. Some work on the project was completed but the device was cancelled before production. The system was to have both command and timer detonation options.
- Length: 15.2 feet (4.6 m)
- Diameter: 2.5 feet (0.76 m)
- Weight: 1,680 pounds (762 kg)
- Fuzing: airburst or contact
- Yield: Yield could be varied between 8 and 61 kilotonnes of TNT (33 and 255 TJ) by using different weapon pits (cores).
- Implosion nuclear weapon
- English Electric Canberra (Royal Air Force)
- Douglas F3D-2B Skyknight
- Douglas A-1 Skyraider
- Douglas A-3 Skywarrior
- Douglas A-4 Skyhawk
- Martin B-57 Canberra
- McDonnell F2H Banshee
- McDonnell F3H Demon
- McDonnell F-101 Voodoo
- North American FJ Fury
- North American B-45 Tornado
- North American F-100 Super Sabre
- Republic F-84 Thunderjet
- USAF Museum: Mk 7 nuclear bomb Archived 2007-10-28 at the Wayback Machine
- Canberra B.6 & B.(I)6. Pilot's Notes, 1958
- Complete List of All U.S. Nuclear Weapons
- FISSION WEAPONS Archived 2011-09-05 at the Wayback Machine from Department of Energy (DOE) OpenNet documents
- "New Postwar Explosives" (PDF). Archived (PDF) from the original on 2015-10-05. Retrieved 2015-04-24.
- "Nuclear Weapons". Archived from the original on 2020-04-04. Retrieved 2015-04-24.
- "Operation Teapot". Nuclear Weapon Archive. October 15, 1997. Retrieved 30 November 2018. "The predicted yield was 33 kt. The actual 22 kt was 33% below this, seriously compromising the data collected." cf. "Nuclear Test Film - Operation Teapot" (linked below) ~17:30 "While the expected yield was 28 kilotons, radiochemical analysis indicated a yield closer to 22 kilotons."
- "Operation Buster-Jangle". Nuclear Weapon Archive. October 15, 1997. Retrieved 30 November 2018.
- History of the Mark 7 Warhead (Report). Sandia. April 1967. p. 44. SC-M-67-548. Archived from the original on 2022-03-18.