Military Explosives (Chapter 1) Flashcards
- What is R.E factor?
R.E stands for Relative Effectiveness which represents a measurement of an explosive’s power compared to TNT
- What are the four common types of Block demolition charge?
TNT, M112, M1 DYNAMITE, AND 40lb Cratering charge
- What is block demolition charge?
Prepackaged HE (high explosive) Charges that are used for general purpose task (cutting, breaching, and cratering)
- Describe TNT
Trinitrotulene (TNT), is the baseline to rate all military explosives using the R.E Factor
Most often composite form of H6, Comp B, Comp B4
- How is TNT packaged?
¼, ½, and 1 lb blocks
- What are the advantage of TNT?
Effective for all types of demolition work except steel cutting
Insensitive to shock or friction
Convenient size and shape for charge construction
- What is the disadvantage of TNT?
Cannot be molded and is difficult to use on irregular shaped targets
- What are the composition explosive?
Composition A
Composition B
Composition H6
Composition C4
- What is effective temperatures of C4?
Between -70 F and 170 F
- What happens to C4 in colder temperatures?
Loses its plasticity
- What are the components of C4?
90% RDX
9% NON-EXPLOSIVE PLASTICIZER
1% Taggant (odorizer)
- What is M112 Block demolition charge?
Primary block demolition charge in U.S. Army. Ideally suited for irregularly shaped targets.It can be “CUT” and “MOLDED”. Primarily used for cutting and breaching because of high RE.
- What does M112 consist of?
1 ¼ lb of composition C4
- What is R.E factor of Dynamite?
0.92
- Is there any difference between commercial dynamite and military dynamite?
The strength of military dynamite is 60% strength of commercial dynamite.
Commercial is made of nitroglycerin, military is 75% RDX, 15% TNT, 10% Desensitizers and plasticizers
- What does M1 dynamite consist of?
75% RDX
15% TNT
10% Desensitizers and plasticizers
- How M1 dynamite issued?
Issued in ½ lb cylindrical cartridges measuring 1 ¼” x 8”
- What is primary used of M1?
Stump removal, military construction, quarrying, ditching, and service demolition work
- What is and advantage of M1?
Reliable underwater for up to 24 hours
- What is disadvantage of M1?
Not effective as cutting or breaching charge
- What is R.E factor of composition H6?
1.33
- What is composition H6 used for? What is it made of?
Used in cratering charges, general purpose bombs, MOAB (Massive Ordnance air blast), Naval torpedoes, and Land mines
44% RDX 29.5% TNT 21% AL 5% wax 0.5% Calcium Chloride