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ac guns Flashcards

1
Q

M16A1 (GUN LOW)

A

4000 rpm

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2
Q

M16A1 (GUN HIGH)

A

6000 rpm

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3
Q

WHAT AMMUNITION DOES THE M16A1 USE?

A

20MM

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4
Q

primary parts of M16A1

A

barrels, housing assembly, and rotor assembly

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5
Q

Purpose of Muzzle Clamp Assembly (M16A1)

A

restrains individual barrel

movement during firing

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6
Q

how many barrels does the M16A1 have?

A

6 six rifled barrels

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7
Q

Firing Contact Assembly (M16A1)

A

provides path for current to reach breech-bolt assembly

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8
Q

Purpose of Clearing Solenoid Assembly (M16A1)

A

controls the movement of the clearing sector assembly.

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9
Q

Purpose of Guide Bar (M16A1)

A

guides the rounds into and out of the extractor lip

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10
Q

Purpose of Breech-Bolt Assembly (M16A1)

A

picks up a round as it enters the gun

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11
Q

what does the rotor assembly consists of?(M16A1)

A

rotor drive gear, bolt head lock, center track, removable track spacers, removable tracks, rotor gear

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12
Q

what is the rotor assembly driven by? (M16A1)

A

hyds

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13
Q

what does the Rear Housing Assembly provide? (M16A1)

A

provides the main cam path that controls the

movement of the breech-bolt assemblies

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14
Q

where is the Lubricator Assembly located? (M16A1)

A

externally to the gun housing assembly

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15
Q

what direction does the M16A1 barrels revolve?

A

counter clockwise

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16
Q

when does the clearing cycle start?

A

when the clearing solenoid is energized

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17
Q

The M61A1/A2 automatic gun is driven by what means?

A

hydraulically driven

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18
Q

The M61A1/A2 automatic gun is controlled by what means?

A

electrically controlled

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19
Q

At what prescribed rate of rounds per minute does the M61A1/A2 gun fire M50 series
ammunition?

A

4000- 6000 rpm

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20
Q

What components are the primary parts of an M61A1/A2 automatic gun?

A

Barrels, housing assembly, and rotor assembly

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21
Q

What means are used to secure the gun barrels to the stub rotor of an M61A1/A2 automatic
gun?

A

interrupted locking lugs

22
Q

On an M61A1/A2 gun, what component picks up a round as it enters the gun?

A

Breech-bolt assembly

23
Q

On an M61A1/A2 gun, a full firing cycle requires what prescribed number of actions?

A

Seven

24
Q

Which of the following two cycles describe the M61A1/A2 automatic gun operation?

A

Firing and clearing

25
Q

What component of an M61A1/A2 automatic gun ejects the empty case from the gun?

A

The extractor lip

26
Q

On an M61A1/A2 automatic gun, what sequence of actions is performed by the breech-bolt
assembly during one full firing cycle?

A

Feed, chamber, lock and fire, unlock, extract, and eject

27
Q

what are the major parts of the drum unit assembly of an M61A1/A2

A

drum unit, entrance cover, exit cover, and scoop disk

28
Q

The mechanical drive unit in an F/A-18 aircraft has what total number of output shafts?

A

one output shaft

29
Q

A gun gas purge system of an M61A1/A2 automatic gun is used for what purpose?

A

Cool the gun barrels and purge gas from the gun compartment

30
Q

The air required to operate the gun gas purge system in an F/A-18 aircraft is provided by what
air source?

A

Engine bleed air and the ram air scavenge door

31
Q

. In an F/A-18 aircraft, the M61A1/A2 automatic gun system can be operated in what computer
mode?

A

A/A (air to air) or A/G (air to ground)

32
Q

In an F/A-18 aircraft, what component is used to manually clear the M61A1/A2 automatic gun?

A

Clearing sector retainer

33
Q

An M61A1/A2 automatic gun must be sent to a depot-level maintenance activity under which of
the following conditions?

A

A. When major repair is required
B. When an alteration is authorized
C. When 120,000 rounds have been expended

34
Q

Which of the following gun maintenance procedures should be accomplished during scheduled
maintenance of an M61A1/A2 automatic gun?

A

A. Lubrication
B. Normal disassembly and parts replacement
C. A functional check of the components based on the round interval

35
Q

Scheduled maintenance for an M61A1/A2 automatic gun handling and drive system should be
performed after what maximum number of rounds has been fired?

A

30,000

36
Q

What is the rapid rate of fire in rounds per minute for the GAU-21?

A

950 to 1,100

37
Q

What is the maximum air-to-ground range, in meters, of the GAU-21?

A

6,500

38
Q

How is the GAU-16 cooled after firing?

A

air cooled

39
Q

What is the performance firing rate in rounds per minute of the GAU-16?

A

750 to 850

40
Q

What are the GAU-17 major gun assemblies?

A

barrels and barrel clamp assembly, housing assembly, rotor

assembly, and clutch assembly

41
Q

What is the sustained firing rate in rounds per minute of the M240D?

A

100 rpm

42
Q

What weapon can be removed easily from the helicopter and used for ground defense if
needed?

A

M240D

43
Q

gau-21 max range

A

6,500 meters

44
Q

gau-21 Maximum effective range

A

1,850 meters

45
Q

how many major assemblies does the GAU-21 have?

A

8

46
Q

list the major components of the GAU-21

A

barrel assembly,
receiver assembly, bolt assembly, barrel buffer assembly, feed cover assembly, back plate assembly,
auxiliary return spring assembly, and trigger assembly.

47
Q

what is the GAU-16?

A

automatic, recoil-operated, closed-bolt, beltfed, air-cooled machine gun

48
Q

WHAT ARE THE MAJOR COMPONENTS OF THE GAU-16?

A

barrel and barrel
extension assembly, rod assembly, breech bolt assembly, recoil buffer assembly, cover assembly,
retracting slide assembly, receiver assembly, barrel jacket assembly, back plate assembly, and front
sight assembly.

49
Q

how is the GAU-17 powered?

A

externally powered

50
Q

max range of the M240D?

A

3,725 meters

51
Q

MAX EFFECTIVE RANGE OF THE M240D?

A

1,200 meters

52
Q

M240D rate of fire?

A

650 to 950 rounds per minute

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