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SPECIAL SAFETY FEATURES - 14024_12
IDENTIFICATION OF ARMED FUZES

Aviation Ordinanceman 1 - Aviation theories and other practices
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MECHANICAL FUZES M904E2/E3/E4 MECHANICAL IMPACT NOSE FUZE LEARNING OBJECTIVE: Identify the various types of mechanical fuzes to include their physical description and functional operation. There are many fuzes in use by the Navy today. Some of the commonly used fuzes are discussed in this TRAMAN. To keep up with current fuzes, you should refer to Aircraft Bombs, Fuzes, and Associated Components, NAVAIR 11-5A-17, and Airborne Bomb and Rocket Fuze Manual, NAVAIR 11-1F-2. The M904 (series) fuze (fig. 1-1) is a mechanical impact nose fuze used in the Mk 80 (series) low-drag general-purpose (LDGP) bombs. The M904 (series) fuze is installed in the nose fuze well of the bomb and requires the use of an adapter booster. The fuze is detonator-safe, and it contains two observation windows through which you can determine the safe/arm condition of the fuze. There is no special locking feature designed into the fuze for shear safety if the bomb is accidentally dropped. However, detonation is unlikely if the collar (forward end of the fuze) is sheared off by the accidental drop before arming is complete. Figure 1-1—Mechanical impact nose fuze M904 (series). 1-3







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