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AO2 Study Material > Navedtra 14313A, AO, chapter 2,9 > Flashcards

Navedtra 14313A, AO, chapter 2,9 Flashcards

0
Q

A misfire that later fires from delayed ignition

A

Hang fire

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1
Q

Initiating device that ignites the propellant grain.

A

Igniter

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2
Q

The result when a rocket does not fire when the firing circuit is energized

A

Misfire

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3
Q

The propulsive component of a rocket . It consists of the propellant , the igniter and the nozzle

A

Motor

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4
Q

The solid fuel used in a rocket motor , which upon burning , generates a volume of hot gases , that stream from the nozzle and propel the rocket

A

Propellant grain

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5
Q

A weapon propelled by the sustained reaction of a discharging jet of gas against the container of gas

A

Rocket

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6
Q

The term applied when internal parts react to the acceleration of the rocket

A

Setback

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7
Q

The force exerted by the gases produced by the burning of the rocket motor propellant

A

Thrust

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8
Q

The Venturi-type nozzle does what

A

Decrease the turbulence of escaping gases and increases the thrust

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9
Q

Gas pressure provides about ____ percent of the force , and the escaping gases provide about ____ percent of the force necessary to move the container forward

A

Gas pressure (70%) and escaping gas (30%)

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10
Q

What are the three major components of a rocket

A

The motor , warhead , fuze

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11
Q

What rocket motor is used with the 2.75” and 5.0” rockets

A

2.75” -MK 66 and 5.0” -MK 71

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12
Q

What is an internal burning , star perforation , double base solid propellant

A

The propellant grain

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13
Q

What restricts or controls burning of the propellant surface

A

Inhibitor

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14
Q

What component is salt coated to prevent unstable burning of the propellant

A

Stabilizing rod

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15
Q

What hears the propellant grain to ignition temperature

A

Igniter (contains black powder and magnesium)

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16
Q

What is ALWAYS required to cover the ignition contact band until the rocket is actually loaded into the launcher

A

Metal shielding band

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17
Q

What prevents fins from closing on rockets

A

The cross head

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18
Q

What causes the rocket to spin during free flight

A

Flutes

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19
Q

What permits rockets from being launched from high speed aircraft

A

Flutes that cause the rocket to spin

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20
Q

When not installed in the launcher , what holds the fins in place

A

Fin retainer band (not interchangeable with shielding band)

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21
Q

For specific component information on rockets , you should refer to what publication

A

Aircraft Rocket System 2.75” and 5.0” , NAVAIR 11-75A-92

22
Q

High explosive warheads contain what high explosive material

A

Comp-B

23
Q

Base fuzes are installed at the factory and should be removed when

A

NEVER

24
Q

What type of warhead is used against personnel and light material targets such as trucks and parked aircraft

A

High explosive fragmentation (HE-FRAG) warheads

25
Q

What warhead combines the effectiveness of the HE-FRAG and high explosive antitank (HEAT) warhead

A

Antitank/antitank warhead

26
Q

What warhead is a compromise between the armor piercing and the fragmentation designs

A

General purpose(GP) warhead (max penetration is obtained by using solid nose plug)

27
Q

What is the only GP warhead currently in use

A

The MK 24 Mods 0 and 1

28
Q

What warhead contains a large number of small arrow shaped projectiles

A

Flechette warhead , WDU-4A/A

29
Q

Rocket fuzes are classified

A

There location in the warhead . (They are further classified by mode of operation , such as impact-firing; mechanical-time; acceleration and deceleration; or proximity

30
Q

What is the only Mechanical time rocket fuze in use

A

MK 193 Mod 0

31
Q

What is the only acceleration -deceleration fuze currently in use by the navy p

A

The Model 113A

32
Q

Some rocket fuzes designed for use with the 2.75” warheads can be used with the 5.0” warhead what adapter

A

BDU-15/B adapter booster

33
Q

The Wrap-Around Folding Fin Aircraft Rocket(WAFFAR) is fired in large numbers to produce a shotgun pattern and are carried and launched from what launch packages

A

7 or 19 round tube launcher packages

34
Q

How many shots does the 2.75@ LAU 68 fire

A

7 shot

35
Q

How many shots does the 2.75” LAU 61 fire

A

19 shots

36
Q

How many shots does the 5.0” LAU 10 fire

A

4 shot

37
Q

What is the suspension of the 2.74” and 5.0” rocket launchers

A

2.75”=14” suspension only / 5.0”=14-30” suspension

38
Q

What is a multipurpose arrangement that consists of a shockpan assembly , a shockpan cover assembly and or locking ring assembly

A

Shipping ends

39
Q

What are the rocket launchers made of and are they reusable

A

Made of aluminum and they are resusable

40
Q

What save arm device prevents loaded rockets from firing

A

The breaker switch

41
Q

If the mode selector switch is in the RIPPLE fire position , the intervalometer converts the firing pulse into a ripple purse and successively fire all rockets at what intervals

A

95-milliseconds interval

42
Q

The intervalometer should NOT be manually rotated through the numbered positions except when

A

When checking empty pod

43
Q

What is the weight of the LAU-19 rocket launcher

A

500-550 lbs

44
Q

What adapter is used to test rockets

A

W2 adapter

45
Q

The rockets are retained in the 5’0” launcher tubes during shipping , handling and flight by engagement of what

A

Spring loaded detent pawl in the rocket detent groove

46
Q

What rocket launcher tester is currently in use

A

MK III rocket launcher tester

47
Q

Rockets produce what type of hazard

A

Fire hazard

48
Q

Rocket motors should be stowed in the same manner as what

A

Smokeless powder

49
Q

If rocket motor is dropped at any distance what must be done

A

It should not be used , notify EOD if needed

50
Q

What can happen if the rocket motor is dropped

A

Cracks or breaks in the grain increase the carefully calculated burning are and will cause excessive internal pressure buildup , which can cause the motor to blow up after ignition

51
Q

Smoking is not permitted in the loading area within how many feet of rockets

A

200 feet

52
Q

Fuzes and warheads dropped more than how many feet must not be used

A

If dropped more than 5 feet don’t use

53
Q

To prevent possible explosion , airborne rockets or loaded launchers should NOT be exposed to the exhaust from jet engine started pods or gas turbine compressors within how many feet

A

10 feet

AO2 Study Material (34 decks)

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