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W74 (nuclear warhead)

W74 AFAP (top)

The W74 warhead, also known as XM517,[1] was an American nuclear artillery shell that was cancelled before production.

Responding to a 1969 United States Army request for a replacement for the W48 155 mm artillery shell, the Los Alamos National Laboratory started development of the W74. However, by mid 1973 the program was discontinued without producing a weapon for general production. The primary reasons for the cancellation of the W74 were the obsolete technology used and high cost. The weapon only employed fission, had no improvements in accuracy, and had no capability to be further developed as an "enhanced radiation" (neutron) device; the result was a weapon that did not provide new capabilities, all with a per shell cost of $425,000 (1973).[2]

W75

The W75 warhead, also known as the XM673,[3] was the 8-inch (200 mm) equivalent of the W74. It was viewed by many as being an obsolete system, expensive to deploy and not worth pursuing. Development was started in 1973 at the Livermore Lab and terminated two years later.

References

  1. ^ Betty L Perkins (2003-11-03). Tracing the Origins of the W76: 1966-Spring 1973 (PDF) (Report). Los Alamos National Labs. p. V-41. LA-14066-H. Retrieved 18 November 2022.
  2. ^ Schwartz, Stephen I. Atomic audit: the costs and consequences of U.S. nuclear weapons since 1940. Brookings Institution Press, 1998. p 93.
  3. ^ Department 1210 (1975-10-01). Military Liaison Department (1210) Activities-- FY 1975. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Retrieved 2024-06-10.{{cite conference}}: CS1 maint: numeric names: authors list (link)
  • 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. ISBN 978-0-9791915-0-3 (2nd Ed.)


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