Primer, Percussion

Percussion Primers, Design Requirements , Report MDC-AG614, McDonnell Aircraft Co, St Louis, Mo (30 June 1970) 3) Anon, Eng-... [Pg.406]

Another suggested application for the diazido nitrato compd is that of a combustible percussion primer for caseless ammo Ref L.P. Kuhn A.C. Duckworth, The Preparation of Some New Polyfunctional Organic Azides , BRL Rept 1607(1972)... [Pg.606]

Primer and Caps in Vol 3, C577 and Anvil of a Percussion Primer in Vol 1, A473-L)... [Pg.651]

Percussion Primer. See under Primer, Percussion in this Vol... [Pg.651]

MECHANICAL initiators PERCUSSION PRIMERS, STAB DETONATORS, AND FRICTION PRIMERS... [Pg.850]

Although it is evident that initiators represent a broad spectrum of items and designs, both percussion and electric, the contents of this treatise will deal only with three selected types of percussion items ie, percussion primers, stab primers and/or detonators, and friction primers... [Pg.850]

There are four different types of percussion primers and these are recognized by name as rBoxer, Berdan, Bloehm, and Battery Cup. These centerfire primers and the rimfire type are shown in Fig 2... [Pg.850]

Here are brief descriptions of these percussion primers. The Boxer primer consists of a metallic cup and anvil (both made from brass alloy ... [Pg.850]

A review of the vast amt of work performed in the field of percussion primers reveals what is essentially an empirical approach to the development of both primer designs and priming mixts. It is recognized that a percussion primer must perform two vital functions (1) it must fire , ignite , or otherwise function when provided with the proper mechanical stimulus — a firing pin (with optimum contour to its striking end) and (2) it must perform its other function by which the flame , fire , or output will ignite the proplnt properly so as to provide the projectile with the specified velocity and within... [Pg.852]

In order to fire reliably in a gun or other weapon device, a percussion primer must possess impact sensitivity which is in consonance with the mechanical energy delivered by the firing pin. In all cases, a factor of safety is built into the system in such a manner that the firing pin energy usually exceeds the max energy requirement of the primer by approx 20%... [Pg.852]

When a percussion primer is used to drive a firing pin to cause a series of events to occur, an important aspect of primer output is the moment-... [Pg.853]

Since the quantity of small arms ammo manufd and expended is extremely high, greater emphasis has been placed on an explanation of the primers used in these rounds. However, this in no way is intended to diminish the importance of additional types of percussion primers which find wide use in artillery ammo (Table 3)... [Pg.857]

In mechanical fuses, where percussion primers are required, it seems fairly obvious that space requirements impose limits on the size of spring mechanisms or other physical modes of causing firing pins to move. The result is that, for fuses and other applications of this type, it becomes necessary to use primers of greatly increased sensitivity (Refs 6 8). This condition is illustrated with the M29A1 primer which is required to fire with an applied energy of 16 inch-ounces. This increased sensitivity is achieved by the use of thinner primer cup metal of softer alloy. Sensitivity can be further enhanced by the use of more sensitive priming mixt (Refs 2,6 20)... [Pg.857]

Table 4 shows the approved and standardized priming mixts which possess greater sensitivity than FA70, FA90, or FA956, previously listed (Refs 8,12,13,17 20) High-Temperature-Resistant Percussion Primers... [Pg.857]

Since stab detonators contain no restraining anvil as do percussion primers, the resistance to penetration of the firing pin becomes quite im-. portant. This is the role of compression or density of the mixt. With higher density, the kinetic energy of the firing pin is dissipated over... [Pg.859]

The selection of a stab detonator for a specific application requires a consideration of both input and output (Ref 7). The situation exactly duplicates the problems encountered in the selection of a percussion primer. However, as previously discussed, the end purpose of a detonator is different the input energies are significantly lower, and the output is intended to initiate a high expl. In addition to the main criteria, consideration must also be given to size, weight, cost, and reliability... [Pg.859]

What has been described so far constitutes only one half of the friction primer, ie, the main charge, contained in a cylindrical cup. Centrally located in the K chlorate mixt was a loop of braided wire, coated with red P (90%) and dried shellac (10%). Any mixt of red P with K. chlorate was, and still is, very sensitive, hazardous, and unpredictable. There is ample reason to understand why friction primers were abandoned and replaced with spring-actuated firing pins to fire percussion primers and carry the sequence thru a suitable expl train... [Pg.863]

Temperature Percussion Primers , Propellant-Actuated Devices Symposium, FrankfordArs (June 1961) 10) Anon, Detonator Output... [Pg.864]

Kenney, O.M. Stamm T,B. Johnson, Development of High Temperature Percussion Primer , Remington Arms Co Kept No AB-69-6... [Pg.864]

Percussion Primer Property Chart after Lake (Ref 311... [Pg.993]

Lake, Percussion Primers, Design Requirements McDonnell Douglas Aircraft Company, Report MDC A0514 (1970) 32) F.J. Valenta, Ef-... [Pg.999]

Primers are used for the ignition of propellants and pyrotechnics. They are categorized as percussion primers, used mainly for the ignition of propellants, and stab primers, used in explosive trains of fuses and electric primers. [Pg.50]

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