Figure 1-7.—Adapter-booster M148/E1 (series).

Q4. Q5. What device is used to thermally protect the Mk 82 Mod 2 bomb? How can you tell if first stage arming of the Mk 346 fuze occurs? ADAPTER BOOSTERS An adapter booster is needed to install mechanical fuzes in the Mk 80 (series) general-purpose bombs. The adapter boosters currently in use are the M148/T45E, M148E1 (nose), and the M150/T46 (tail). M148/M148E1/T45 (Series) Adapter Booster The M148/M148E1/T45 (series) adapter booster (fig. 1-7) permits the use of mechanical nose fuzes in the Mk 80 (series) bombs. The adapter booster is externally threaded for installation in the bomb fuze well and internally threaded for installation of the fuze. The casing contains the booster charge and is threaded onto the base of the adapter. The M148E1 adapter booster is similar in external appearance to the earlier M148/T45 (series). Differences are the nomenclature marking on the face of the adapter booster collar, the words THERMALLY PROTECTED in bold black letters, and a yellow band around the adapter booster casing, which indicates that it is loaded with explosives. The M148E1 was developed for use with thermally protected bombs. Figure 1-7.—Adapter-booster M148/E1 (series). 1-13