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USAF B-2 Bomber

Issue: 06-2025Photo(s): By US Air Force

Under orders from US President Donald J. Trump, dubbed “Operation Midnight Hammer,” seven B-2 Spirit stealth bombers dropped GBU-57 Massive Ordnance Penetrator (MOP) “bunker buster” bombs on nuclear sites in Iran.

Following the initial strike on the nuclear site in Fordow, Iran, the B-2s went on to deploy their ordnance on other sites, eventually totalling 14 MOPs hitting the targeted areas. This was the first operational use of the GBU-57.

Only B-2 Spirit stealth bombers are programmed to carry the GBU-57s. Each B-2 can hold two of the bombs. The GBU-57 series is a 30,000 pound (13,607 kg) class, 20.5-footlong (6.2 m) precision-guided munition. It is a guided, penetrating weapon with the ability to reach and destroy targets in deeply buried and hardened bunkers and tunnels.

The mission was specifically focused on preventing Iran from developing a nuclear weapon.

B-2 SPIRIT GENERAL CHARACTERISTICS

The B-2 Spirit is a multi-role bomber capable of delivering both conventional and nuclear munitions. A dramatic leap forward in technology, the bomber represents a major milestone in the US bomber modernisation programme.

Primary functionmulti-role heavy bomber
ContractorNorthrop Grumman with Boeing Military, Hughes Radar Systems, General Electric Aircraft Engine and Vought Aircraft Industries.
Power plantfour General Electric
F118-GE-100 engines
Thrust17,300 pounds each engine
Wingspan172 feet (52.12 meters)
Length69 feet (20.9 meters)
Height17 feet (5.1 meters)
Weight160,000 pounds
(72,575 kilograms)
Maximum take-off weight336,500 pounds
(152,634 kilograms)

Source: whiteman.af.mil

 
Fuel capacity167,000 pounds
(75750 kilograms)
Payload40,000 pounds
(18,144 kilograms)
Speedhigh subsonic
Rangeintercontinental
Ceiling50,000 feet (15,240 meters)
Armamentconventional or nuclear weapons
Crewtwo pilots
Unit costApproximately $1.157 billion
(fiscal 1998 constant dollars)
Initial operating capabilityApril 1997
Inventoryactive force: 20 (1 test);
ANG: 0; Reserve: 0