Set B Vol 2 UREs

Question 1

A requirement for military explosives is that raw materials must be

Answer 1

cheap

Question 2

Volatility is the tendency of a substance to produce

Answer 2

vapors.

Question 3

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

Answer 3

Moisture-absorbing property.

Question 4

Upon what factor does the rate of detonation depend?

Answer 4

Degree of confinement and loading density

Question 5

What are the basic components of an explosive train?

Answer 5

Detonator, booster, and a bursting charge.

Question 6

What does an explosive train booster do?

Answer 6

Detonates the main charge

Question 7

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

Answer 7

Use a time action high-explosive (HE) train

Question 8

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

Answer 8

Blast

Question 9

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

Answer 9

shock wave and a jet of dense gas

Question 10

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

Answer 10

light.

Question 11

What are the classifications of pyrotechnics?

Answer 11

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

Question 12

When considering pyrotechnics, two types of effects for signals are

Answer 12

light and smoke.

Question 13

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

Answer 13

Color of the signal produced.

Question 14

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

Answer 14

Smoke and flare.

Question 15

When and where is the MK124 Mod 0 signal used?

Answer 15

Day or night, land or sea use.

Question 16

How much light does the M127A1 signal produce?

Answer 16

50,000 candlepower.

Question 17

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

Answer 17

Caliber .50.

Question 18

What shotgun round is the exception to the gauging principle?

Answer 18

.410.

Question 19

What hazard is involved in using blank ammunition?

Answer 19

The wad can cause injury.

Question 20

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

Answer 20

Cartridge case, primer, bullet, and propellant

Question 21

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

Answer 21

Black powder.

Question 22

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

Answer 22

250 meters

Question 23

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

Answer 23

100 meters.

Question 24

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

Answer 24

Light

Question 25

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

Answer 25

Blasting caps.

Question 26

What device is used to initiate time fuse?

Answer 26

M60 igniter.

Question 27

The M112 demo block is made of what substance?

Answer 27

Composition C–4.

Question 28

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

Answer 28

nitroglycerin

Question 29

In what length is fire wire issued?

Answer 29

500 feet.

Question 30

How do we classify bomb fuzes?

Answer 30

Position, action, and method of arming.

Question 31

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

Answer 31

proximity

Question 32

Where is a proximity fuze placed on the bomb?

Answer 32

Nose.

Question 33

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

Answer 33

Electric charging assembly.

Question 34

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

Answer 34

Cotter pins.

Question 35

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

Answer 35

Remove the stop screw from the fuze body.

Question 36

What adapter booster is used with the M904 fuze?

Answer 36

T45.

Question 37

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

Answer 37

The tail fuze well.

Question 38

The FMU–54 series tail fuzes are used in

Answer 38

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

Question 39

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

Answer 39

Battery-firing device.

Question 40

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?

Answer 40

Four; one.

Question 41

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

Answer 41

FZU–48/B initiator.

Question 42

The FMU–143 series fuze was designed for use in

Answer 42

penetration bombs.

Question 43

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

Answer 43

FZU–32 series fuze initiator.

Question 44

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

Answer 44

Thermal battery.

Question 45

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?

Answer 45

FZU–39/B.

Question 46

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

Answer 46

Height of function.

Question 47

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

Answer 47

Adapter booster.

Question 48

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

Answer 48

BSU–93/B

Question 49

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

Answer 49

BSU–49/B.

Question 50

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

Answer 50

BSU–50/B.

Question 51

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

Answer 51

BLU–113.

Question 52

Which bomb is filled with a thermobaric explosive?

Answer 52

BLU–118.

Question 53

Externally, the M129 leaflet bomb is similar to the

Answer 53

M117, 750-pound bomb.

Question 54

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

Answer 54

SUU–76C/B.

Question 55

The BLU–126/B bomb is identical to the

Answer 55

MK82, 500-pound bomb.

Question 56

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

Answer 56

27 pounds

Question 57

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

Answer 57

25 pounds

Question 58

The BDU–48/B resembles the ballistics of the

Answer 58

MK82 high-drag munition

Question 59

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

Answer 59

SUU–65.

Question 60

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

Answer 60

BLU–97 bomblets

Question 61

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

Answer 61

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

Question 62

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

Answer 62

2

Question 63

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

Answer 63

4

Question 64

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

Answer 64

Airbag ejection system

Question 65

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

Answer 65

operational flight program

Question 66

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

Answer 66

Control actuation assembly

Question 67

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

Answer 67

Dummy

Question 68

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

Answer 68

Fuze is bore safe.

Question 69

What is the arming delay distance for the M505 fuze?

Answer 69

10–35 feet.

Question 70

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

Answer 70

projectile.

Question 71

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

Answer 71

200–250.

Question 72

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

Answer 72

GAU–12

Question 73

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

Answer 73

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

Question 74

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

Answer 74

80 or 100.

Question 75

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

Answer 75

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

Question 76

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

Answer 76

Lock ring

Question 77

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

Answer 77

Depleted uranium penetrator

Question 78

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

Answer 78

As familiarization training and mechanical cycling of the gun system

Question 79

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

Answer 79

12 seconds.

Question 80

Name the components of a 40 millimeter (mm) round

Answer 80

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

Question 81

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

Answer 81

16.

Question 82

What aircraft fires 105 millimeter (mm) ammunition?

Answer 82

AC–130.

Question 83

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

Answer 83

Comp B

Question 84

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

Answer 84

13,000.

Question 85

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

Answer 85

15 feet.

Question 86

The 105 millimeter (mm) clearing cartridge was designed to

Answer 86

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

Question 87

What are countermeasure flares designed to do?

Answer 87

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

Question 88

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

Answer 88

BBU–36/B.

Question 89

The SD–206 infrared flare (Smokey Devil) provides

Answer 89

smoke to simulate a flare for training purposes

Question 90

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

Answer 90

BBU–35/B

Question 91

The LUU–2 series aircraft flare produces

Answer 91

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

Question 92

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

Answer 92

Green light.

Question 93

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

Answer 93

Light in the near-infrared region.

Question 94

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

Answer 94

Rearward.

Question 95

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

Answer 95

ARD 863–1.

Question 96

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

Answer 96

65 (fps).

Question 97

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

Answer 97

Supply gas pressure to operate other CADs

Question 98

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

Answer 98

Eject aircraft canopy.

Question 99

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

Answer 99

Explosive and nonexplosive.

Question 100

What must you do before you handle any impulse cartridge?

Answer 100

Ground yourself.