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25 Cards in this Set

  • Front
  • Back

How is an M61A1/A2 automatic gun is (1) driven and (2) controlled?

(1) Hydraulically (2) Electrically

At what prescribed rate can an M61A1/A2 gun fire M50 series ammunition?

4,000 to 7,200 rpm

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

Barrels, rotor assembly, and housing assembly

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

Interupted locking lugs

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

Breech bolt assembly

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

Seven

What are the two distinct cycles of an M61A1/A2 automatic gun operation?

Firing and clearing

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

The extractor lip

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

Feed


Chamber


Lock


Fire


Unlock


Extract


Eject

A drum unit assembly consists of the drum unit and what other major parts?

Entrance cover


Scoop disk


Exit cover

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

One

A gun gas purge system is used for what purpose?

Cool the gun barrels and purge gas from the gun compartment

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

Engine bleed air and the ram air scavenge door

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

A/A, A/G, or CCIP

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

Clearing section clamp

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

When major repair is required


When an alteration is authorized


When 120,000 rounds have been expended

Which of the following gun maintenance procedures should be accomplished during scheduled maintenance?

Lubrication


Normal dissassembly and parts replacement


A functional check of the components based on the round interval

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

30,000 rounds

What is the rapid rate of fire for the GAU-21?

950 to 1100 rounds per minute

What is the maximum ari to ground range of the GAU-21?

6,500 meters

How is the GaU-16 cooled after firing?

By air

What is the performance firing rate of the GAU-16?

750 to 850 rounds per minute

The GAU-17 major gun assemblies include the barrels and barrel clamp, housing, rotor, and what assembly?

Clutch

What is the sustained firing rate of the M240D?

100 rounds per minute

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

M240D