Originally Posted by Melbourne View Post
??? A chain gun is a gun that is run off a chain, connected to a motor. Or it’s a brand name of a particular chain gun. A gun that is not a chain gun is powered by energy from expanding gasses. I’m not saying, I’m asking – I don’t know anything about this. ???
That is correct. An electric motor drives the firing/feeding mechanism using a chain. Hence, chain gun.
Above is the original question and my reply. Please note that neither Melbourne nor I were referring to the A-10 in our posts. I’m well aware that the A-10 has a gatling gun multiple barrel weapon - the GAU-8.
The chain drive in the Apache and Bradley (and some C-130 gunships) moves a lot more than just the bolt; the feed system is more complex than the simple Wiki descriptions.
I’ve had 36+ years dealing with ammo and explosives including hundreds of hours with the A-10 DU armor piercing rounds and the later HEI. Nearly as many hours with the Bradley and Apache chaingun ammo to include malfunctions of the weapons on multiple occasions. The chain drive DOES NOT reduce the likelihood of jams. Failure modes include multiple rounds in barrel resulting in catastrophic failure of barrel and damage to the aircraft :eek:; tearing up the cartridges cases and scattering the propellant throughout the mechanism. Don’t believe the “double ram prevention” blurb in the Wiki entry for the Apache. Jamming has been a recurring problem with the Apache 30mm weapon.