Quantcast Figure 1-6. Rocket motor, forward view.

 

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Figure 1-5. Rocket motor, rear view.
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TM-9-1375-213-12-1 Demolition Materials Demolition Kit Cratering: M180 NSN 1375-00-148-7159 and Training: M270 (Inert) NSN
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Figure 1-7. Demolition circuit.
TM 9-1375-213-12-1
Figure 1-6. Rocket motor, forward view.
(a) A lo-foot (300 centimeter) length of No.
1. The continuity plugs are removed from
18, two-conductor wire with an electrical connec-
all interkit connectors except from the kit far-
tor on one end and a M6 electric blasting cap at
thest from the blasting machine.
the other end.
2. All the firing lead plugs are removed
(6) A 9-foot (270 centimeter) length of det-
from all firing cable connectors except from the
onating cord with a priming adapter M1A4 and
kit nearest the blasting machine.
a M7 nonelectrical blasting cap at one end.
3. Starting with the kit farthest from the
(c) The M6 cap is connected to the free end
blasting machine each firing cable connector is
of the detonating cord by a plastic sleeve to assure
connected, in turn, to the interkit connector of the
close contact between the detonating cord and the
next kit in line. All the kits are connected in this
blasting cap for good propagation of the detona-
manner, to complete the series circuit.
tion.
NOTE
(3) These components form a continuous fir-
The designations of "farthest kit" and
ing train connecting the firing device to the
"nearest kit", as used hereafter, refer to
shaped charge.
the position of the kits in relation to the
(4) For multi-kit hookups, the demolition cir-
blasting machine.
cuit detonating cords are taped together at the
plastic sleeve area to form an explosive junction,
h. Demolition Circuit.
to assure simultaneous functioning of the shaped
(1) The demolition circuit (fig. 17) is shipped
charges.
in a plastic bag which is enclosed in a wooden box.
i. Tripod. The tripod (fig. 1-3) consists of three
The box top is secured by two nylon straps.
two-section tubular legs, permanently joined at
(2) The demolition circuit consists of several
the top by a metal fixture. Approximately 12
electrical and nonelectrical components.
1-8

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