Expedient Explosives (Chapter 13) Flashcards
- What consist of Incendiary mix?
Incendiary mix may be thermite or mixture of 2 parts aluminum powder/magnesium powder to 3 parts of ferric oxide
- How much M112 is placed on a 81 mm?
1/3 block
- How to calculate stand off distance of expedient shape charge?
1.5 x diameter of cone
- What is N.E.W of 60 mm?
1lb
- How much M112 is placed on a 60 mm?
¼ block
For Crimper method time fuse, Top of tightening nut to top of jaw is how many seconds?
4 Sec
- What is most crucial component of platter charge?
Buffer material for plate (thick card board, or rubber)
- What is the formula for expedient shape charge?
Volume of Cylinder – Volume of Cone = Explosive volume
- What is the 3 and 5 rule of dust initiator charge?
It used step 5 of dust initiator formula
3 = enclosed 5= partially enclosed
- What is the consideration when use expedient shaped charge?
a) Consistent result are difficult to obtain due to variables such as explosive density, configuration, and cavity liner density
b) If no liner is present, it uses a hot air jet
- What is the formula for volume of cylinder?
3.14 x R^2 x Height of explosive (2 x height of the cone)
- Can you remove white phosphorus grenade?
No. Do not remove the fuse
- What is the minimum distance for emplace daisy chained claymores?
3-5 meters apart at a minimum
- What container can be used to construct an expedient shaped charge?
Almost any container will work (Cans, Jars, bottles, drinking glasses, wine and whisky bottles)
- What is expedient shaped charge?
Designed to produce a tubular or linear fracture/hole in a target
Use an explosively formed plasma jet to penetrate the target
- What is the optimum angle of cavity for expedient shape charge?
42 to 45 Degree
- What is Munroe effect?
An explosive arranged in a concave pattern have greater effect on a target.
- What is difference between the Munroe effect and Miznay cardin effect?
Munroe effect: shock waves reflect to each other which increasing speed of explosive, and forms a Jet
Miznay effect: large sheet of explosive with a sturdy metal backing plate. After initiation, the explosion turns the metal plate into a blunt nosed projectile
- In dust initiator charge, 1lb of explosive will effective up to what
Up to 40lbs of cover
- How much M112 is placed on a 4.2 IN?
½ block
- How much M-4 fuel thickening compound would you use for a 55 gallon fuel drum?
Use 3 ounces M-4 thickening compound per gallon
150 ounces M-4 and 50 gallons
- What is N.E.W of 4.2 IN?
9lbs
- What types of explosive used in expedient shaped charge?
Plastic explosive
- What is N.E.W of 81 mm?
2lbs
- What is the characteristics of dust initiator charge?
a) Most effective in closed spaces
b) Charge size is 1lb (half explosive / half incendiary mix)
- What is the formula for volume of cone?
3.14 x R^2 x 1/3 height of cone
- How much M112 is placed on a 105 mm?
½ block
- What types of fuel (oil) can be used for expedient flame fougasse?
Non ethanol gas
- What is the charge size of the dust initiator charge?
Charge size is 1lb (half explosive / half incendiary mix)
- What are the two ways to prime mortar rounds?
a) To prime from fuse-well
Remove carrying ring, or fuse, and pack fuse well with C4
b) To prime externally
Up to 240mm, detonate with 2lbs explosives in good contact with case, just forward of rotating band
- How much M112 is placed on a 120 mm?
1 block
- What is optimum characteristic of an expedient shape charge?
a) Cavity liner: Copper, zinc, glass, and tin
b) Cavity angle: 42-45 degree (will work 30-60 degree)
c) Explosive height: two times the cone height
d) Standoff height: 1 ½ the diameter of cone
e) Detonation point: exact top center of the charge
- For Crimper method time fuse, base of leg to top of jaw is how many seconds?
25 sec
- What is N.E.W of 120 mm?
10lbs
- What is the formula of dust initiator charge
(Cubic Volume divided by 1000) X 3 or 5 , then divide by 40
Round up to whole number
- All mortar and artillery have what?
All have COMP B filler with an RE Factor of 1.38
- For Crimper method time fuse, the nut itself is how many seconds?
1 Sec
- What is claymores made of?
1.5lbs C4 filler with RE factor of 1.34
- What must be done prior to prime mortar and artillery rounds?
Remove increments (cheese charges, powder bags) Tape and Prime C-4 to widest part of round
- What is the ratio of fertilizer to wax in AN Stachel Charge?
4 pounds of fertilizer to 1 pound of wax
- What is N.E.W of 105 mm?
10lbs
- How to calculate amount explosive of grapeshot?
¼ of the projectile weight = amount of explosive
- What the explosive weight of platter charge and how to prime?
Explosive weight = weight of the plate (2-6 lbs)
Prime rear center
