WEAPONS DEVELOPMENT 4. A feasibility study was completed and a development program established for a nuclear projectile for the 155-millimeterx howitzer, 5. Designs of the following weapons have been released and the weapons placed in the production-engineering Phese: a. Fission warhead, XW-34, with an operational availability date of April 1958 for three applications: the small depth bomb, Lulu; the laydown bomb, Hotpoint A; and the submerged-submarine-launched torpedo, ASTOR, b, Class D thermonuclear bcmb and warhead, TX/XW-27, with cperational availability dates of January 1958 _ for the warhead and July 1958 for the bomb, (‘Jarhead applications are for the Regulus and Rascal missiles.) c, Class D thermonuclear bomb and warhead, TX/MW-28, with an operational availability date of January 1958. (Warhead applications are ‘for the Matador and Regulus missiles.) ‘ dad. Class C thermonuclear bomb and warhead with gas boosting of the primary, TX/XW¥-39-X1, with an operational availability date of January 1958, This weapon and the Class D weapons above will be the first gas-bcosted thermonuclear weapon to be produced, e. Class B thermonuclear bomb, reduced fallout version, TX-36Y2-X1 - operational availability date, April-October 1958, This will be the first "clean" bomb to be produced,. BAT ADIT Y Den a -* 6, The Department of Defense has cancelled its requests for the development of the XW-e7 and XW-39-X1l warhead epplications to the B-58 Pod (Hustler), and for a feasibility study of a warhead for the Triton missile, & 7. Anew feasibility study was initiated for 2 nigh-yield warhead in the megaton range for the Air Force surface-to-air missile, Bcmarc,

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