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2w0 CDCs > Set B Vol 2 UREs > Flashcards

Set B Vol 2 UREs Flashcards

1
Q

A requirement for military explosives is that raw materials must be

A

cheap

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2
Q

Volatility is the tendency of a substance to produce

A

vapors.

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3
Q

What property of an explosive do we refer to by the word “hygroscopicity?”

A

Moisture-absorbing property.

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4
Q

Upon what factor does the rate of detonation depend?

A

Degree of confinement and loading density

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5
Q

What are the basic components of an explosive train?

A

Detonator, booster, and a bursting charge.

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6
Q

What does an explosive train booster do?

A

Detonates the main charge

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7
Q

How can you achieve an airburst with a general-purpose bomb?

A

Use a time action high-explosive (HE) train

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8
Q

What effect does more damage than the fragmentation effect of a specific bomb?

A

Blast

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9
Q

The penetrating action of a shaped charge is the result of the

A

shock wave and a jet of dense gas

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10
Q

The four factors that control the visibility of pyrotechnics are candlepower, color, weather, and

A

light.

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11
Q

What are the classifications of pyrotechnics?

A

Illuminants, signals, combinations of signals and illuminants, and simulators.

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12
Q

When considering pyrotechnics, two types of effects for signals are

A

light and smoke.

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13
Q

What do the colored bands, letters, or patches on signal munitions indicate?

A

Color of the signal produced.

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14
Q

What pyrotechnic effect is produced by the AN–MK13 signal?

A

Smoke and flare.

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15
Q

When and where is the MK124 Mod 0 signal used?

A

Day or night, land or sea use.

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16
Q

How much light does the M127A1 signal produce?

A

50,000 candlepower.

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17
Q

What is the largest caliber ammunition that we classify as “small arms”?

A

Caliber .50.

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18
Q

What shotgun round is the exception to the gauging principle?

A

.410.

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19
Q

What hazard is involved in using blank ammunition?

A

The wad can cause injury.

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20
Q

What are the components of a typical small-arms cartridge?

A

Cartridge case, primer, bullet, and propellant

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21
Q

What substance is the explosive filler for the M30 practice grenade?

A

Black powder.

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22
Q

How far in front of an M18A1 mine do we consider inside the danger zone?

A

250 meters

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23
Q

How far behind an M18A1 mine should personnel take cover before they fire it?

A

100 meters.

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24
Q

What mortar has a short range and a small explosive charge?

A

Light

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25
Q

What device(s) do we use to detonate high explosives (HE)?

A

Blasting caps.

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26
Q

What device is used to initiate time fuse?

A

M60 igniter.

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27
Q

The M112 demo block is made of what substance?

A

Composition C–4.

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28
Q

The difference between commercial dynamite and military dynamite is that military dynamite does not contain

A

nitroglycerin

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29
Q

In what length is fire wire issued?

A

500 feet.

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30
Q

How do we classify bomb fuzes?

A

Position, action, and method of arming.

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31
Q

The main types of fuze actions are impact, time, and

A

proximity

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32
Q

Where is a proximity fuze placed on the bomb?

A

Nose.

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33
Q

In an electronically-timed fuze, what component replaces the arming vanes used in mechanically timed fuzes?

A

Electric charging assembly.

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34
Q

The design of which safety feature is to prevent movement of the arming heads, arming stems, and strikers while the fuze is being handled?

A

Cotter pins.

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35
Q

What action must you take to set the “SECONDS TO ARM” setting below six seconds on an M904 fuze?

A

Remove the stop screw from the fuze body.

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36
Q

What adapter booster is used with the M904 fuze?

A

T45.

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37
Q

In a bomb body, where is the M905 fuze installed?

A

The tail fuze well.

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38
Q

The FMU–54 series tail fuzes are used in

A

MK80 series general-purpose bombs with an air inflatable retarder.

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39
Q

With electrical fuzes, which device is used in place of arming wire?

A

Battery-firing device.

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40
Q

How many FZU–2/B boosters are used with the FMU–81/B fuze when installed in the nose fuze well and the tail fuze well, respectively?

A

Four; one.

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41
Q

What component provides the electrical power needed to operate the FMU–139A/B fuze?

A

FZU–48/B initiator.

42
Q

The FMU–143 series fuze was designed for use in

A

penetration bombs.

43
Q

What provides the electrical power needed to operate the FMU–143 series fuze?

A

FZU–32 series fuze initiator.

44
Q

What hazard is associated with the DSU–33 proximity sensor?

A

Thermal battery.

45
Q

Which sensor is a radio frequency (RF) radar ranging system used with the suspension utility unit (SUU)–64/B, SUU–65/B, and SUU–66/B dispensers?

A

FZU–39/B.

46
Q

What does HOF stand for on the FZU–39/B proximity sensor?

A

Height of function.

47
Q

What component is used to adapt a nose fuze for an M series bomb?

A

Adapter booster.

48
Q

Which fin provides a high-drag, low-altitude bombing capability for the M117 bomb?

A

BSU–93/B

49
Q

Which air inflatable retarder (AIR) fin is used on the MK82 bomb?

A

BSU–49/B.

50
Q

What air inflatable retarder (AIR) fin is used on the MK84 bomb?

A

BSU–50/B.

51
Q

Which bomb is used as the warhead in the GBU–28A/B?

A

BLU–113.

52
Q

Which bomb is filled with a thermobaric explosive?

A

BLU–118.

53
Q

Externally, the M129 leaflet bomb is similar to the

A

M117, 750-pound bomb.

54
Q

Which suspension utility unit (SUU) does the PDU–5/B utilize?

A

SUU–76C/B.

55
Q

The BLU–126/B bomb is identical to the

A

MK82, 500-pound bomb.

56
Q

What is the net explosive weight (NEW) of the BLU–126/B?

A

27 pounds

57
Q

What is the weight of the BDU–33 series practice bomb?

A

25 pounds

58
Q

The BDU–48/B resembles the ballistics of the

A

MK82 high-drag munition

59
Q

Which suspension utility unit (SUU) dispenser does the CBU–87 cluster bomb use?

A

SUU–65.

60
Q

Which submunitions are loaded into a CBU–87 cluster bomb?

A

BLU–97 bomblets

61
Q

What is the only difference between the CBU–87/B and the CBU–87A/B cluster bombs?

A

The A/B has the live FZU–39/B sensor installed

62
Q

How many different types of bomblets are loaded into a single CBU–89/B cluster bomb at one time?

A

2

63
Q

How many projectiles are contained in each BLU–108/B submunition?

A

4

64
Q

What ejects the BLU–108 series submunition into the airstream?

A

Airbag ejection system

65
Q

The components of a wind corrected munitions dispenser consist of a fin guidance system, a variable position umbilical connector, and

A

operational flight program

66
Q

Which wind-corrected munitions dispenser component cants the fins to spin the dispenser during flight?

A

Control actuation assembly

67
Q

What 20 millimeter (mm) round is used for drill or testing feeder assemblies?

A

Dummy

68
Q

What M505 series fuze safety feature prevents accidental arming during handling?

A

Fuze is bore safe.

69
Q

What is the arming delay distance for the M505 fuze?

A

10–35 feet.

70
Q

The identifying information on a 20 millimeter (mm) round of ammunition is marked on the

A

projectile.

71
Q

When 20 millimeter (mm) ammunition is bulk-packed, how many rounds may you expect to find in an M548 container?

A

200–250.

72
Q

What aircraft cannon fires the 25 millimeter (mm) round?

A

GAU–12

73
Q

How can you tell a 25 millimeter (mm) dummy cartridge from other 25 mm rounds?

A

Dummy cartridge projectile is nonseparable and the total cartridge is gold in color.

74
Q

When 25 millimeter (mm) ammunition is bulk-packed, how many rounds you expect to find in a CNU–405 container?

A

80 or 100.

75
Q

How is ignition from the primer carried to the propellant in a 30 millimeter (mm) target practice round?

A

The primer ignites black power in a flash tube, which ignites the propellant.

76
Q

What device holds the ball rotor of the 30 millimeter (mm) M505A3 impact fuze in an unarmed position until it is fired?

A

Lock ring

77
Q

Which component allows the 30 millimeter (mm) armor-piercing round to achieve target penetration?

A

Depleted uranium penetrator

78
Q

What is the purpose of the 30 millimeter (mm) dummy ammunition?

A

As familiarization training and mechanical cycling of the gun system

79
Q

How long does the red tracer composition burn in the 40 millimeter (mm) AAA, target practice tracer (M91) round?

A

12 seconds.

80
Q

Name the components of a 40 millimeter (mm) round

A

Primer, cartridge case, propellant charge, projectile, and fuze.

81
Q

What is the total number of rounds can the MK1 ammunition box hold?

A

16.

82
Q

What aircraft fires 105 millimeter (mm) ammunition?

A

AC–130.

83
Q

What type of explosive is loaded in the projectile of the 105 millimeter (mm) high-explosive (HE) round?

A

Comp B

84
Q

Approximately how many fragments will the high fragmentation (HF) PGU–45/B projectile produce?

A

13,000.

85
Q

What is the factory set height of burst (HOB) for the FMU–160/B fuze to optimize lethality?

A

15 feet.

86
Q

The 105 millimeter (mm) clearing cartridge was designed to

A

clear a projectile lodged in the bore of a 105 mm cannon.

87
Q

What are countermeasure flares designed to do?

A

Divert enemy aircraft infrared/heat-seeking missiles from friendly aircraft

88
Q

Which impulse cartridge initiates the MJU–7/B flare?

A

BBU–36/B.

89
Q

The SD–206 infrared flare (Smokey Devil) provides

A

smoke to simulate a flare for training purposes

90
Q

Which impulse cartridge does the RR–170 chaff cartridge use?

A

BBU–35/B

91
Q

The LUU–2 series aircraft flare produces

A

two million candlepower for an average burn time of five minutes.

92
Q

What output does the LUU–5/B target marker produce?

A

Green light.

93
Q

What output does the LUU–19 series illumination flare produce?

A

Light in the near-infrared region.

94
Q

In which direction are flares launched from the SUU–25E/A flare dispenser?

A

Rearward.

95
Q

What impulse cartridge supplies the gas pressure to launch the flares from the SUU–25E/A dispenser?

A

ARD 863–1.

96
Q

The gas pressure produced by the impulse in an SUU–25 ejects the flare at a speed of approximately

A

65 (fps).

97
Q

What are initiators, found in cartridge-actuated devices (CAD), designed to do?

A

Supply gas pressure to operate other CADs

98
Q

What are removers, found in cartridge-actuated devices (CAD), designed to do?

A

Eject aircraft canopy.

99
Q

What are the two types of impulse cartridges found in propellant-actuated devices (PADS)?

A

Explosive and nonexplosive.

100
Q

What must you do before you handle any impulse cartridge?

A

Ground yourself.

2w0 CDCs (13 decks)

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