Relay Detonator

When there is more than one lead as in Fig 6-1, each successive lead should be of a larger diameter so that the intensity or 

---

Relay Detonator. See Ref 23, pp 5-30 to 5-33 and also in this Volume, Section 4,... 

FIRING PIN PERCUSSION DELAY PRIMER RELAY DETONATOR BOOSTER BURSTING charge... 

This starts the action of other elements of explosive train which consists of a Tetryl "lead", a relay detonator, and a booster charge. The stab detonator consists of a cup, which is made of A1 or A1 base alloys if LA is one of the expl ingredients, whereas Cu or Cu base alloys are used for detonators contg MF. The cup might have any one of several designs of its sensitive end closures, such as two disk-closed ends one disk-closed end one coined end one coined end one open end and one disk-closed end one open end... 

DELAY PELLET ACCELERATING CAVITY RELAY DETONATOR... 

The term "relay" is defined at the beginning of this Section. To this definition may be added the following description of a relay detonator, which is taken from Ref 23, pp 5-30 to 5-33 and slightly reworded and abbreviated ... 

In Fig 5-27 taken from Ref 23, p 5-31 (See our Fig 1-64), is shown a relay detonator which has given satisfactory results in 7 and 7.7-sec vented delay elements in the temperature range of -65 °F to 160 °F. The lightly pressed BkPdr chge at the terminal end of the vented delay column is provided to produce sufficient heat and pressure to assure reliable initiation of the LA chge. 

The relay detonated the uppe r chge and its action was intensified by the lower chge which, in turn, would detonate the booster(see below)... 

An explosive train component normally consisting of a primer, a delay column, and a relay detonator or transfer charge assembled in that order in a single housing to provide a controlled time interval. 

Detonating relays Detonator assemblies, non-electric, for blasting, I.IB, 1.4B, 1.4S... 

Section 1 lists those subjects from "Abel s Equation of State to "Detonating Relays which were either already described in Vols 1,... 

Relay. A component of a high-explosive train that provides the required energy to reliably initiate the next element in the train. Specifically applied to small charges that are initiated by a delay element and, in turn cause the functioning of a detonator (Ref 40a, p 120)(See slso in this Volume, Section 4, Part F (Compare with Lead)... 

This type of detonator is designed to deliver a detonating impulse when acted upon by a heat impulse or a detonating impulse generated by a previous element. In the latter case it serves for boostering the detonating impulse. Heat impulses may result from the flash of a delay element in delay type fuzes or the flash from a primer in instantaneous type fuzes. When initiation results from the functioning of a previous detonator, the flash type detonator usually serves in the capacity of a relay where the gap over which the detonation must be transmitted is too... 

Delays, Relays, Leads and Their Uses in Fuze Detonators, Fuze Primers and Some Pyrotechnic Items a) Definition of Terms... 

In case of impact the SQ firing pin (D) and detonator (E) function but the effect is prevented from being transmitted to booster (U). On the other hand, when the firing pin (N) strikes the primer (P), the shock is transmitted thru the delay (Q) and relay (T) to booster (U) and then to the main chge of projectile... 

Note If the fuze is set for superquick action (as shipped), detonator M50 initiates relay M7 upon impact... 

If the fuze has been set for "delay action" (usually 0.1 sec), the detonator is aligned with the delay expl components. Impact fires the delay primer. The flash from the primer sets off the BkPdr delay element which burns thru and sets off, respectively, the relay, the detonator, the booster lead-in, the booster and the main charge of the bomb. More detailed description of the AN-M103A1 fuze, especially of its arming mechanism is given in Ref 51a, pp 4-1 to 4-6... 

The fuze body assembly consists of metallic body which contains index lock pin, stop screw, index stop, striker assembly, rotor release assembly, delay lock pin, and rotor assembly. The explosive train consists of delay element M9, relay XM9 (2.31 grains of LA), detonator M35 (in rotor assembly) and a booster cup assembly. 

When the primer is struck by the firing pin, it flashes and sets off the delay element. After burning thru, the delay element sets off the relay which fires the detonator and the bomb (Ref 51a, pp 4-36 to 4-38)... 

The firing pins cause the primers to ignite and the resulting flash sets off the delay elements, which are followed by relay elements, detonators, auxiliary booster lead-ins, booster leads, booster and main charge of the bomb (Ref 51a, pp 4-44 to 4-47)... 

Detonation. The firing pin sets off the primer which relays the explosion to the detonator. The detonator explodes the booster which, in turn fires the bomb... 

---