Terminology Flashcards
PI
Ratio of a circles circumference to its diameter
Circumference
Perimeter of a circle
Diameter
Length of a straight line through the center of an object
Radius
Half the distance of a diameter
Breaching radius
Used in conventional breaching. The total distance needed to breach through an object (after rounding rules)
One dimensional
Lacking depth, a line
Two dimensional
Area with no depth, only surface
Three dimensional
Area plus depth
Area
Surface set in 2 dimensions L x W
Volume
Amount of space occupied by 3 dimensional objects L x W x H
Square
Rectangle with equal 4 sides, no depth
Cube
Object with 6 sides, has depth
Cylinder
A circle with depth
Cone
A cylinder with a triangular top
Square root
A factor of a number where the root is itself times itself
Cube root
Factor of the root is the number times itself times itself
Fraction
A numerical representation indicating a quotient of two numbers; a portion, a fragment
Numerator
Part of fraction above the line, signifies number to be divided by denominator
Denominator
Below the line, divisor of the numerator
Decimal
Fragment of a whole number expressed in numbers by percentage
Whole number
Entity not a fragment
Deflagrate
Rapid burn
Detonate
Instantaneous or rapid change from solid to gas
M183 satchel charge
Consists of 16 blocks M112 c-4 PKG. Wt 20lbs
Block/Package/Stick
Single entity of explosive
Fuse igniter
M60 used for time fuse only.
M81 used for shock tube and time fuse.
MDI
Modern demolition initiators
Non-electric firing system
Consist of an initiator (usually m-60), time fuse (usually m700), and a non-electric blasting cap (usually m-7)
Electric firing system
Consist of power source (usually CD-450), firing wire, and an electric cap (usually M-6)
Ring main
Det cord tied onto itself to form a circle from which branch lines are tied into to set off multiple charges. Creates redundancy in the explosive train.
Line main
Det cord line that is used to set off multiple charges. Less time to set up vs. a ring main but with no redundancy.
Branch line
Length of det cord used to prime an explosive charge and to tie the charge into a line/ring main
Priming knot
A det cord knot used to take the place of a blasting cap to prime a charge. Ex: uli, spiral, double overhand, four wrap, eight wrap, wiseman, det cord lace
Square knot
Used to connect det cord together and tie in firing systems to a ring main
Work quickly
Quickest method of constructing charges and attacking a target. Most amount of explosives, conventional charge, external charge
Work efficiently/effectively
Most effective method of constructing a charge and attacking a target. Least amount of explosives, advanced charge, internal charge
Nonel
Shock tube in the civilian world, short for non explosive
ECT
Explosive cutting tape. Brand name for Low Hazard Flexible Linear Shape Charge. Utilizes munroe effect to cut steel. Also utilized for door and wall breaching.
