The last subject discussed by Mri Henderson was the thermonuclear TwoStage Weapons weapon program, The TX~l4, TX-16, and TX-17 constittte our emergency thermonuclear capability. TX-14 and TX-16 are to be retired, There is a program to develop a parachute for the TX-17 for a smaller time of : fall than the presentze Automatic nuclear insertion is being worked on. . Contact fuzing, desired for surface burst applications is being worked on, but presents difficult problems, available for at least two yearss It will not be Sy i The TX-15 is the weapon considered to fill the ‘class-C IN TX-15 requirement. dandia has assumed responsibility for the detailed internal engineering of this weapon, and has thus become, for the first time, involved in nuclear design, subject to control by Los Alamos, is scheduled for April 30, 1955. The particular program is The first delivery to the stockpile The bombis engineered for storage as a completely assembled unit, except for the tail fins, It is equipped with barometric and proximity fuzes; some consider contact fuzing a "must", | The 17,400 1b TX-21 is in its infancy. Mr, Henderson said that a lightened version might eventually take the place of the TX-15 in filling the class C requirement. The TX-21 appears to be compatible with the B-58 aircraft (Hustler). An effort will be made to standardize the fuzing in the differert thermonuclear weapons. _ Consact Fuze Dirficulties _ There were some questions and discussions by the group, mainly on fuzing for surface burst applications. ~ ee There seems to be a divergence . , eS sy