The Mark 26 nuclear bomb was related to the
Mark 21. Development of the Mk-26 started on September 1, 1954. At the end of July 1955, the design of the Mk-21 was released for production, while the design for the Mk-26 was not. The "Clean" Mk-21C which was tested in the
Redwing Navajo shot did not interest the
US Air Force
The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Sig ...
, or
AEC. As the decision not to pursue the "clean" Mk-21 closely coincided with the decision to terminate development of the Mk-26 in April 1957, it is possible that Mk-26 was the designation for the clean version of the Mk-21.
References
* Hansen, Chuck,
Swords of Armageddon U.S. Nuclear Weapons Development since 1945" (CD-ROM & download available). PDF-2.67 Mb. 2,600 pages, Sunnyvale, California, Chucklea Publications, 1995, 2007. (2nd Ed.)
Nuclear bombs of the United States
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