TNPSC Thervupettagam

GBU-57 bunker busters

July 14 , 2025 16 hrs 0 min 34 0
  • The U.S. military has carried out precision strikes on three key Iranian nuclear facilities, mainly Fordow, Natanz and Isfahan.
  • The key part of these strikes was conducted by the B-2 Spirit stealth bombers which dropped GBU-57 bunker busters.
  • The strikes carried out under ‘Operation Midnight Hammer’.
  • The B-2 Spirit stealth bombers dropped 30,000 lb GBU-57 Massive Ordnance Penetrator (MOP) ‘bunker buster’ bombs at the Fordow site.
  • This was the first operational use of the GBU-57 MOP.
  • The U.S. submarine launched more than two dozen Tomahawk land attack cruise missiles.
  • B-2 is a dual-capable multi-role heavy bomber, powered by four engines.
  • The B-2’s low observability is derived from a combination of reduced infrared, acoustic, electromagnetic, visual and radar signatures.
  • It is more powerful than its predecessor, the BLU-109 and the GBU-28.
  • The B-2 Spirit is the only aircraft in the USAF capable of employing the 20.5 ft, 30,000 lb MOP.
  • The GBU-57 has a penetration capability of up to 200 feet underground before exploding.
  • A next generation bomber, the B-21 Raider, a dual-capable penetrating-strike stealth bomber, is currently under development.
  • The B-21 is similar to the B-2, but slightly smaller, with a distinctive beak domed centre.

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