Army Fuze Primer, New No

No single explosive has been used by itself in percussion primers because none has been found that meets both the input and output requirements. As can be seen from compns listed above, the usual ingredients are a primary expl, an oxidizer, a fuel, and, in some cases, an abrasive. Some mixts ate made of nonexplosive components, such as a fuel and oxidizer with or w/o abrasive 

The primer cup, or body, is constructed of a metal having a specified thickness and hardness such that when the bottom, or dome, of the primer is struck with a nonsharp firing pin, the primer will be initiated without rupture or blow-back at the point of detonation. 

The components of Navy percussion fuze primers contg MF usually consist of a Cu (or cartridge brass) primer cup, a tin (or Cu) sealing cup or disk, and a tin-plated brass anvil. Cartridge brass and gilding-metal is used by the Army for primer cups contg MF 

More detailed descriptions of construction and properties of fuze percussion-primers are given in Ref 23, pp 3-13 to 3-22 

Accdg to definition given in Ref 23, p 3-22 (slightly reworded) It is an initiating explosive - train component fired by an electrical impulse supplied by the energy either stored within the fuze before release of the missile, or generated within the fuze system just prior to or at impact of the fuze. An electric primer serves to initiate the next component of the train which can be either a detonator or delay element 

---