Downloaded from https://www.everyspec.com AMCP 706-210 delay fuzes for bombs and underwater mines 1.5.5 COMBINATION FUZES may have delay times after impact (emplace- ment) of from minutes to days. These fuzes usu- These are fuzes combining more than one of ally contain antiremoval devices to discourage the above types with one as the Principal (P) defuzing by the enemy. action and other(s], as Secondary action(s).
1-5.2 TIME FUZES 1-5.6 OTHER FUZES These are fuzes in which action is created within the fuze at the end of an elapsed time These are fuzes that cannot be included in the after arming, impact, etc., as measured by above types Where this occurs the item should mechanical, electical, pyrotechnic, chemical, be identified, the action defined, and differences radiological, or other means. Time fuzes are from other actions should be listed.
used to initiate the munition at some desired time after launch, drop, or emplacement These 1-5.7 SELF-DESTRUCTION fuzes are generally settable at the time of use and the timiing function is performed by the use Self-destruction (SD) is an auxiliary feature of such devices as ciockwork, analog or digital provided in the fuzes of certain munitions, electronic circuitry, and chemical and pyrotech- primarily ground-to-air or air-to-air to explode nic reactions. Time fuzes are used for projectiles or "clean up" the munition in case of target primarily of the illuminating, beehive, and special miss or failure of primary fuze mode.
It may be purpose .ategories, as well as for mines, bombs, accomplished by various timing mechanisms and grenades. They also have some limited uses such as discussed earlier or in the case of more in HE projectiles. Time fuzes range from those sophisticated munitions by command through having set times as low as fractions of a second a radio or radar link. The purpose of SD is of to as high as several hours or days. Typically a course to minimize damage to friendly areas. projectile fuze gives times up to 200 seconds in current designs. 1-5.8 NONEXPLOSIVE FUZES 1-5.3 PROXIMITY FUZES Nonexplosive fuzes have specialized uses.
A dummy fuze is ra completely inert and more or less accurate replica of a service fuze. For ballis. These are fuzes in which action is created tic purposes it may duplicate the weight, center within the fuze from characteristics other than of gravity, Lnd contour of the service fuze. A actual contact or elapsed time characteristics, practice or training fuse is a service fuze, modi- Proximity fuzes (alternatively referred to as in- fled primarily for use in training exercises. It fluence fuzes) initiate the munition when they may be completely inert (a dummy fuze), may sense that they are in the proximity of the tar- have its booster charge replaced by a spotting get.
This action is particularly effective in uses charge, or may differ in other significant ways against personnel, light ground targets, aircraft, from a service fuze. and superstructures of ships. These fuzes are the subject of separate Engineering Design Hand- 1.5.9 MODEL DESIGNATION booksp ' t Army service fuzes are assigned the letter "M" 1-5.4 COMMAND FUZES followed by a number (such as M100). Modifi. cations of "M" fuzes are given suffix numbers These are fuzes in which action is created ex- starting with "A" (such as M100A1).
ternal to the fuze and its associated munition, Experimental Army fuzes have the letters and deliberately communicated by the fuze by "XM" preceding a numerical designation (such electrical, mechanical, optical, or other means as XM200). When standardized, the "X" is then involving control from a remote point. dropped. In a previous system, experimental 14