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U.S. Air Force Drops Upgraded Nuclear Bomb

July 12, 2015 Air Force Successfully Tests B61-12 Gravity Bomb
Scott Wolff No Comments Technology

Earlier this month, the United States Air Force–in conjunction with the National Nuclear Security Agency–dropped an inert B61-12 nuclear bomb over the Tonopah Test Range as part of an ongoing Life Extension Program (LEP).

Designed and fielded in the 1960s as a tactical nuclear weapon, the B61 measures 11 ft 8 inches long, has a diameter of 13 inches, and weighs approximately 700 pounds. The casing of the bomb is streamlined, optimized for exterior carriage aboard aircraft capable of supersonic flight.

For nuclear weapons, an LEP basically consists of efforts made to repair and upgrade components to make sure they retain their ability to meet designated requirements. Short form? Even though the triggers, warheads, and circuitry sit idle for decades, they still need to retain the ability to create a mushroom cloud and scorched earth when employed.

b61accuracy

Such a program allows old warheads to be stored and maintained safely, providing a credible nuclear deterrent without necessitating new detonation tests or producing all new weapons. The scope of the B61 LEP will improve the overall accuracy and reliability of the bomb with its upgraded design and reconditioned interior components.

For the B61-12 unit being tested, the newly-designed bomb casing is mated to a tail-kit assembly designed by Boeing–much like those in use in the JDAM family of precision guided munitions (PGMs). This test is the first of three development flight tests, with two additional drops scheduled for later this year.

The test demonstrated delivery in a realistic environment, courtesy of a Boeing F-15E Strike Eagle from the 422 TES at Nellis Air Force Base.

(Photo courtesy of NNSA/U.S. Air Force)

About the Author

Scott Wolff is an accomplished writer and renowned aviation photojournalist. He has held the position of Managing Editor for a print flying lifestyle magazine, and is the Host and Editor for FighterSweep. Scott's area of expertise is military flight operations, drawing on ten years of experience working extensively with all branches of the armed forces. He holds an FAA pilot certificate, the culmination of a life-long passion for flying airplanes. Scott has received military altitude chamber training, emergency egress training, and has logged time in a variety of civilian and military aircraft. He is also a member of the International Society of Aviation Photographers and Nikon Professional Services.

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