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Charlie > Calc Place > Flashcards

Calc Place Flashcards

1
Q

Method of tamping

A

External charges are tamped. Internal charges are stemmed

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2
Q

Components of explosive train

A

Primary. Secondary. Main charge

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3
Q

Time blasting fuse two types

A

Safety fuse. M700 time fuse

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4
Q

How long should you wait for non electric misfire

A

60 minutes

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5
Q

Pre mature firing of electrical caps caused by

A

Radio transmissions, operating generators, lightning, power lines, static electricity

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6
Q

Keep 155 meters from energized power lines

A

Blasting caps

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7
Q

Mdi shock tube

A

89.5% hmx 10.5% AL powder

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8
Q

External charges use flat charge with a thickness to width ratio 1:3

A

5lb less-1 inch thick
5-40lb- 2 in thick
40-300lb- 4in thick
300lb+ - 8in thick

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9
Q

Ring charges

A

Diameter 15” or less-1/2in

1in thick up to 30” D

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10
Q

Detectable destructive effects

A

Deformation. Spalling. Radial cracking

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11
Q

Transportation of explosives require

A

Reflective placards both ends and sides. 2 fire extinguishers b/c. Speeds less than 35

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12
Q

Storage of explosives require how much airspace on the top and bottom of explosives

A

3” bottom 18” top

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13
Q

Rules for explosives stored in the open

A

Weigh no more than 500 pounds per pile

Placed more than 140 ft apart

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14
Q

SADD acronym

A

Safe Accessibility Dryness Drainage

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15
Q

When destroying explosives in a pile

A

Piles no more than 2000 lbs. 2 lbs per 100lbs of packed explosives. 1 lb per 100 lbs of unpacked explosives

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16
Q

M32
M34
CD-450

A

10 caps
50 caps
70 caps

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17
Q

M51

A

Blasting cap test set

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18
Q

Ammonium nitrate

A

.42 re

Requires booster

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19
Q

Burning rate m700

A

30-45sec per foot

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20
Q

M6

A

Electric blasting cap. .5 amps 3 volts

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21
Q

M151

A

Low fiber set cord 5-7.5 grains petn per foot

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22
Q

M152

A

RAMS (remote activation munition system) comes with m6 m16 m26

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23
Q

Range of the m152

A

Low power 2-5km

High power 5-8 km

24
Q

3 detectable destructive effects

A

Deformation, radial cracking and spalling

25
Q

Negative pressure from a blast lasts___ times longer than positive pressure

A

3

26
Q

Tamping should be at least _____ to the breaching radius

A

Equal

27
Q

External timber formula

A

P=D2/40

Rectangular charge 1-2 in thick

28
Q

Abatis formula

Diameter of trees needed for enemy vehicles

A

P=D2/50

Wheeled 18”

Track 24”

Charge placed 5’ above ground

29
Q

Internal charge formula (timber)

A

P=D2/250

30
Q

M11

A

30 ft shock tube. Cap is nonelectric

31
Q

Ring charge (timber) how thick for trees diameter 15” less and 15-30”

A

1/2 thick

1” thick

32
Q

4 types of steel

A

Structural, Nickel Molybdenum, high carbon alloy, and cast iron

33
Q

Conventional steel cutting formula

A

P= A .375

P= D

P=D2

34
Q

Railroad tracks

A

Tracks less than 5” 1/2 pound tnt

More than 5” 1 lb tnt

Switches/crossovers 1lb

Frogs 2 lbs

35
Q

Advanced steel ribbon charge

A

Non circular steel up to 3” thick

Charge is 1/2 thickness of target

36
Q

Advanced steel formula

A

P= volume of target/ volume of explosives

VC=B2

Saddle for mild steel (cross fracture)Diamond(stress wave)for high carbon up to 8”

37
Q

Breaching charges should be placed so that there is _______ surface on the other side to facilitate spalling

A

Free reflective

38
Q

Breaching charge formula

A

P=R3KC
External charge round radius up to nearest 1/2foot
Internal charge round up to nearest 1/4foot
N=W/2R Less than 1.25 use 1 1.25-2.5 use2 2.5 and higher round off

39
Q

Opposed(counter force) charge

A

P= thickness x 1.5
P is pound of plastics

Works on concrete columns, pillars less than 4’ thick

40
Q

Expedient breaching of hard surface (side walk)

A

1lb of explosives per 2” of pavement Tamp twice the breaching radius

41
Q

Cratering charge formula

A

Hasty L-16/5+1 50lb
Deliberate 7-80 5-40

Relief face L-10/7+1=Fr En=Fr-1
Fr-40 En-30

42
Q

Hasty, deliberate and relief faced craters are what shape

A

V shaped

Trapezoidal

43
Q

Relieved face craters have friendly and enemy row that are primed _____ to allow for a ________ delay between rows

A

Separately

1/2- 1 1/2 seconds

44
Q

Stumping

A

Dead stumps=1lb per foot

Live stumps=2lb per foot

Increase 50% for standing timber

45
Q

Boulder removal charge methods

A

Snake hole, Block hole and Muddcapping

46
Q

Monroe effect

Miznay-Chardin effect

A

Produces linear tubular fractures

Produces powerful blunt nose projectile

47
Q

Expedient charges angle of cavity? And what is optimum?

A

30-60 degrees

42 is optimum

48
Q

Expedient platter charge

A

Plate weighs 2-6 lbs

Weight of explosives= weight of plate. Max eff range is 25 meters

49
Q

Expedient grape shot

A

1lb of explosives = 4lb of shrapnel

50
Q

Dust initiator charge

A

Charge is 1lb 1 part explosive 1 part incendiary

51
Q

Fougasse

Use ____ of m4 thickener per______ of fuel

A

3 ounces

1 gallon

52
Q 
How much c4 is used for mortars 
60mm
81mm
4.2 inch
120mm
A

1/4 block
1/3 block
1/2 block
1 block

53
Q

Daisy chained claymore a should be placed how far apart

A

3-5 meters minimum

54
Q

M303

A

SOF demo kit

55
Q

Penetration of a small efp vs medium efp

A

1” of armor 2.5” of armor

56
Q

3 types of breaching

A

Mechanical, ballistic, explosive

57
Q

Where are water impulse charges placed on metal doors and wood

A

Center for metal and locks for wood

Charlie (10 decks)

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