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Some Plane Pr0n for Dusty.

An A-10C Thunderbolt II from the Arkansas Air National Guard's 188th Fighter Wing fires its seven-barrel Gatling gun at a ground target Oct. 14, 2010, during the 2010 Hawgsmoke competition in Boise, Idaho. (U.S. Air Force photo/Tech. Sgt. John Orrell)



Hog-Trivia: You can see from this picture the gun gasses going towards the engine intakes.  It is significant enough that when the pilot pulls the trigger, besides sending a signal to fire the gun, it sends a signal to the engine fuel controls to enrich the fuel/air balance in the combustion chamber to avoid the gun gasses causing a flame-out.
Actually, what it does is trigger the ignitor plugs in the engines' combustion chambers to fire continuously while the gun is firing. As soon as you pull the trigger to the first detent, the gun camera rolls, the LASTE system starts tweaking the flight controls to give a better firing platform, and the ignition kicks in. Don't know about a fuel/air mix change...never read that in the Dash One but I could have missed it.
good friend of mine is a maint tech in that unit
Dusty, as you know, I'm a bomb loader.  I was quoting how an engine troop tried to explain it to me.  Now, you made me admit that I don't know everything!  I would never do that to a pilot... :)
BTW, didn't know the AKANG went ugly early. Ft Wayne just gave up its F-16s for Hogs. I could hear the screaming all the way down here near Kokomo. Haven't told 'em yet, but they can feel free to use my house as a LATN point...
Been Hawg wild in Arkansas for as long as I can recall 9which isn't THAT long. Only lived in the area since '03) 

Wasn't a big shock given the Univ of Ark Razorbacks etc.

The unit is actually dubbed the Flying Razorbacks.

I must confess while 'm not a big UofA fan that their hawg does seem fitting on a A-10

 So, "Dusty" wasn't a spur-of-the-moment choice?

Is it true that the gat is aimed down to decrease the angle of attack?
Plus, where do the empty shells go?
Skip - don't remember about the the angle of the gun, but the empties just cycle right back into the ammunition drum in the aircraft.  Good thing, too, as often as they used to do strafing runs overhead back in the day of the "Noon Cease Fire" at Graf so Dusty and his pals could roll in on the impact area.
The gun is in fact angled slightly downward (a couple of degrees). This is to compensate for level flight angle of attack, not to decrease angle of attack during strafing. That's why if the gun went off while the airplane was sitting on the ground, the bullet would impact about 150 feet in front of the jet thanks to that downward tilt. Look at it this way: when an airplane is flying straight and level, the longitudinal axis (line from nose to tail) is angled slightly upward to give the wings a positive angle of attack in relation to the relative wind to provide sufficient lift for level flight. (There are exceptions, like the B-52, but that's unusual.) A straight, on-axis mount would make the gun point upward slightly in level flight so it's mounted with a slightly downward tilt to compensate. Of course, all HUD aiming reference solutions for strafe and air-to-air start from that common data baseline.

On some airplanes, the tilt is quite pronounced in the opposite direction due to the nature of the mission. The F-15's gun has quite an upward angle because using the gun is very much a close-in engagement scenario weapon and these usually (but not always) involve extreme maneuvers at high angles of attack. At some point, you can't pull enough on the pole without stalling the jet as you're trying to get the gun on the bandit so a little extra "up angle," so to speak, helps get the barrels pointed in the right direction at the maximum maneuvering envelope. Once you've solved for gravity drop, trajectory shift, crossing angle, rate of turn, the rate at which your target is crossing your field of view, etc., etc., that little extra advantage makes for a higher probability of kill.

As for the casings after firing, the bullets are carried via their bases in a helix inside the ammo drum behind the gun. It's a continuous loop from the forward part of the drum where the live rounds spiral towards the firing assembly, into the feed chute, enter the breech assembly, into the barrel, fired, extracted and the shells shuttled all the way back to the rear of the drum where they re-enter the helix. Most people think we don't eject the shells to avoid dumping them on people's heads but it's more for maintaining an in-flight center of gravity (CG) to prevent unstable aerodynamic flight characteristics. 
Did Attila just intentionally insult B-52s?  He ought to understand that many-motors monkeys DO NOT take kindly to disparagement.  And as I said before, with their weapons load, close is good enough for EITHER mission.  Even without the D models with their external weapons carriage capbilities...
No, Mark - he just noted that the B-52's normal flight attitude is nose-down, which is a simple fact.
 No, I think he did say a nasty thing about the B52, aside from being a silly drink name. He did forget to mention their 100% success rate at hitting the ground.

Well, BUFF drivers DO tend to look down their noses at everyone else.  Who tend proceed to do the same in return...
I remember collective training at Ft. Polk in '92-93 there was an A-10 unit that used to play on our ranges-saw one of them do a run around part of our site-the guy kept his wingtip INSIDE the tree-line on about a five acre patch.

Damn planes are just friggin' AWESOME manueverable.  It impressed the hell out of me...