Skip Navigation

Close and don't show again.

Your browser is out of date.

You may not get the full experience here on National Journal.

Please upgrade your browser to any of the following supported browsers:

U.S. Conducts 'Successful' Analysis of Updated B-61 Bomb U.S. Conducts 'Successful' Analysis of Updated B-61 Bomb

This ad will end in seconds
Close X

Want access to this content? Learn More »

Forget Your Password?

Don't have an account? Register »

Reveal Navigation


U.S. Conducts 'Successful' Analysis of Updated B-61 Bomb


Patrons line up to view the inside of a U.S. Air Force B-52 bomber during the Australian International Airshow in Melbourne last March. A nuclear bomb carried by the aircraft is being updated and has undergone an initial performance assessment.(Paul Crock/AFP/Getty Images)

The United States on Tuesday said it "successfully" carried out an early performance analysis of a revamped nuclear gravity bomb.

The "full-system mechanical environment test" was the first in a line of assessments intended to verify how the B-61 bomb's new "Mod 12" variant would behave under routine conditions or accident scenarios, the National Nuclear Security Administration said in a statement. The review included use of an Air Force-developed "tail kit" intended to improve targeting accuracy for the updated bomb, which is to eventually stand in for several earlier versions.


The analysis by the Los Alamos and Sandia national laboratories "is a significant achievement and gives us confidence in our ability to move forward with our efforts to increase the safety and security of the bomb," Don Cook, NNSA deputy administrator for defense programs, said in provided comments.

Engineering preparations for the Mod 12 update are now in their second year. The life-extension project aims to keep B-61 bombs ready for potential use, to service various atomic and non-nuclear parts of the Cold War-era weapons, and to bolster their dependability and security, the NNSA says.

The initial test "provides data for analytical model correlation and validation, insight into component environments and evaluation of developmental hardware," the agency release states. "The mechanical environment test series will assist in qualifying the final B-61‐12 design against the full suite of environments."


Deployment of the Mod 12 weapon would enable the United States to mothball the larger and more powerful B-83 bomb "in the mid-to-late 2020s," the NNSA statement adds.

This article was published in Global Security Newswire, which is produced independently by National Journal Group under contract with the Nuclear Threat Initiative. NTI is a nonprofit, nonpartisan group working to reduce global threats from nuclear, biological, and chemical weapons.

comments powered by Disqus