| B90 Nuclear Depth Strike Bomb (NDSB) | |
| Type: | Nuclear weapon |
| Is Explosive: | yes |
| Service: | Cancelled September 1991 |
| Used By: | United States. |
| Weight: | 780lb |
| Length: | 118inches |
| Width: | 13.3inches |
| Detonation: | Contact, airburst, depth |
| Yield: | low kt to 200ktonTNT |
The B90 Nuclear Depth Strike Bomb (NDSB)[1] was an American thermonuclear bomb designed at Lawrence Livermore National Labs in the mid-to-late 1980s and cancelled prior to introduction into military service due to the end of the Cold War.[2] [3]
The B90 design was intended for use as a naval aircraft weapon, for use as a nuclear depth bomb and as a land attack strike bomb. It was intended to replace the B57 nuclear bomb used by the Navy. The B90 bomb design entered Phase 3 development engineering and was assigned its numerical designation in June 1988.[4]
The B90 was 13.3inches in diameter and 118inches long, and weighed 780lb. The B90's yield has been described at both 200ktonTNT and "low kt". This may indicate a variable yield weapon.[2] [3]
The B90 was cancelled in September 1991 along with the W89 and W91 nuclear warheads and AGM-131 SRAM II and SRAM-T missile models. No B90 production models were built, though test units may have been; US nuclear weapon testing continued until 1992.[2]