Mark 4 nuclear bomb
E854463
The Mark 4 nuclear bomb was an early U.S. post–World War II fission weapon derived from the Fat Man design and used during the early Cold War.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
fission bomb
ⓘ
gravity bomb ⓘ nuclear weapon ⓘ |
| alsoKnownAs | Mk 4 bomb NERFINISHED ⓘ |
| conflict | Cold War ⓘ |
| coreType | composite plutonium-uranium core ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| deliveryMethod | air-dropped ⓘ |
| deploymentPlatform |
B-29 Superfortress
NERFINISHED
ⓘ
B-36 Peacemaker NERFINISHED ⓘ B-47 Stratojet NERFINISHED ⓘ B-50 Superfortress NERFINISHED ⓘ P2V Neptune NERFINISHED ⓘ |
| derivedFrom | Fat Man nuclear bomb NERFINISHED ⓘ |
| designer | Los Alamos Laboratory NERFINISHED ⓘ |
| detonationMethod |
air burst
ⓘ
contact burst ⓘ |
| diameter |
1.52 meters
ⓘ
60 inches ⓘ |
| feature |
improved ease of assembly compared to Fat Man
ⓘ
interchangeable nuclear cores with different yields ⓘ modular design ⓘ |
| filling | high explosive lenses ⓘ |
| guidanceSystem | unguided ⓘ |
| hasVariant |
Mark 4 Mod 0
NERFINISHED
ⓘ
Mark 4 Mod 1 NERFINISHED ⓘ Mark 4 Mod 2 NERFINISHED ⓘ Mark 4 Mod 3 NERFINISHED ⓘ |
| length |
128 inches
ⓘ
3.25 meters ⓘ |
| natoDesignation | Mk 4 NERFINISHED ⓘ |
| operator |
United States Air Force
ⓘ
United States Navy ⓘ |
| precededBy | Fat Man nuclear bomb NERFINISHED ⓘ |
| producedUnits |
approximately 550
ⓘ
over 500 ⓘ |
| productionEnd | 1953 ⓘ |
| productionStart | 1949 ⓘ |
| replacedBy | Mark 6 nuclear bomb NERFINISHED ⓘ |
| retired | mid-1950s ⓘ |
| safetyFeature | removable nuclear core ⓘ |
| serviceEntry | 1949 ⓘ |
| technologyGeneration | second-generation U.S. nuclear weapon ⓘ |
| usedBy | Strategic Air Command NERFINISHED ⓘ |
| usedInPeriod | early Cold War ⓘ |
| warheadType | plutonium implosion ⓘ |
| weight |
approximately 10,000 pounds
ⓘ
approximately 4.5 tonnes ⓘ |
| yield | between 1 kiloton and 31 kilotons of TNT ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.