W67 (nuclear warhead)

The W67 was an American thermonuclear warhead developed from June 1966 but then cancelled prior to any production or service use approximately 18 months later.[1]

Developed by Los Alamos,[2] the warhead was in the megaton range[3] and was to have a yield comparable to that of the W56.[4] It was housed in the Mark 17 reentry vehicle and one of the warhead's design goals was the highest maximum output temperature possible. Only one partial yield test of the warhead was performed before the warhead was cancelled in January 1968.[5] Hansen identifies this test as Crosstie Zara.[6]

The Mark 17 RV had a difficult development. The planned total RV and warhead weight was 900 pounds (410 kg), but by November 1966 it weighed 938 pounds (425 kg) due to the higher than anticipated levels of hostile weapons effects protection needed. The actual warhead weight was 675 pounds (306 kg).[7]

After its cancellation, the W68 warhead was developed for Poseidon and the W62 warhead for Minuteman III.[8]

See also

References
  1. Hansen, Chuck (2008). Swords of Armageddon Volume VI. pp. 459–460. ISBN 978-0-9791915-6-5.
  2. Josserand, Terry Michael (2017-03-01). R&A for UUR_Weapon_History_Phases_20170206 (Report). Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). OSTI 1429158. Archived from the original on 2021-08-30. Retrieved 2021-07-24.
  3. Spinardi, Graham (1990). "Why the U.S. Navy went for Hard-Target Counterforce in Trident II: (And Why it Didn't Get There Sooner)". International Security. 15 (2): 147–190. doi:10.2307/2538868. ISSN 0162-2889. JSTOR 2538868. S2CID 153754053. Archived from the original on 2022-11-16. Retrieved 2022-08-26.
  4. MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles (PDF) (Report). Lawrence Livermore National Laboratory. 1976. p. 22. Archived (PDF) from the original on 2022-07-02. Retrieved 2022-08-12.
  5. MIRV: A Brief History of Minuteman and Multiple Reentry Vehicles, p. 62.
  6. Swords of Armageddon Volume VI, p. 459-450.
  7. Bernard C Nalty (1969). USAF Ballistic Missile Programs 1967-1969 (PDF) (Report). p. 43. Archived (PDF) from the original on 2021-09-26. Retrieved 2022-08-12.
  8. Swords of Armageddon Volume VI, p. 343-345,460-465.

F A Ross (May 1967). Preliminary Test Proposal on QEST for XW67 (Report). Sandia National Lab. ALSNLDE98057263.


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