Helicopter gunships have door guns
And those are not meant to attack enemies with significant anti-air presence. Fuck, they get shot down by unguided rockets fine.
and other helos, such as the Cobra, have guns that can traverse to the left and right partly so you can do this maneuver, because it lets you avoid flying directly towards the target which is dangerous if the target is shooting back because you aren't moving relative to them,
Which is why you move relative to them, for fucks sake. A plane, or even better, a helicopter can still move sideways and up and down, throwing off the AA aim. Going literally in a straight line is not something anyone with a fucking brain will do.
which makes you an easy target when you're flying low and slow.
Not as much as going high and slow and in a circle.
A straight line is a vector with a constant direction, a circle can't exist without changing direction, and in order to make a complete circle you have to be changing direction the entire time (turning). If you're flying in a circle around your enemy he has to be tracking you the entire time which complicates shooting you. I guess what you're saying is, from the anti-air attacker's perspective the plane is flying in a straight line? That's what it looks like from far away but if you look at it from above it's a complex movement that's actually happening.
It doesn't fucking matter how it looks from above or from perspective of the pilots, it matters how it looks from the perspective of enemy gunners. The gunners can be inside the circle or outside it, but in any case a circling plane is maintaining a relatively constant speed and turn, which makes it extremly easy to track it and account for.
Nobody in his sane mind is going to go in a straight fucking line against an AA position. This example is just a simple roll, which isin't even the most optimal way of approaching this, but still. The plane is approaching fast and to a gun on the ground it's basically trying to hit a 2D target that moves around, except he has to predict where the target is going to be in few seconds or so, and if he fails he's gonna get fucking shredded once it gets close enough and speed at which he is capable of moving the turret is no longer sufficent. Shooting at a circling aicraft lets the gunner mantain approximately the same leading, so all he has to do is turn his gun with the enemy plane. You can argue that the cricling aircraft can also perform evasive maneuvers, but it really can't, since it's accuracy is DEPENDENT on the circling. Even if it just suddenly starts going straight, it's still going to fuck up the aim significantly.
You realize the accuracy of a gunship RELIES on the target being relatively inside the circle, at least without very advanced fire control systems which we don't have and I honestly doubt could achieve. I'm honestly tired of this argument because you clearly have no fucking idea about shooting an airplane out of the sky. Just go play a game where you can do that, at very least, so you realize how it works.
I don't think you understood what I was saying, I was saying that to someone on the ground who is being orbited by an AC-130 it's flying left to right (because the AC-130's guns are on the right side), which is an advantage compared to flying directly at the target to use forward facing guns, because you're moving more relative to them when orbiting, which makes you harder to hit because the target needs to make more adjustments.
It's really not.
So, Kot, flying straight at the enemy does not give you chances to dodge.
You absolutely do not need to stay still until you start firing the guns or w/e. Just do a fucking barrel roll, and you're already fucking up enemy aim way more than you'd be by circling him.
It gives you chances to die, though,
Well, yes, because it's dangerous, but it's still not batshit retarded.
Dive-bombing was very, very hard if the enemy was on his game, because you're basically sitting still in the air above them, as far as the gunner(s) is(are) concerned.
You have absolutely no fucking idea how to dive bomb then. Setting aside the period during which the plane is on the approach, during which it should be doing evasive maneuvers anyway, during the dive the plane is essentially fucking with any non-advanced AA system because it requires VERY fucking advanced maneuvers (he has to point his gun directly upwards, rotate the gun 180 degrees, start aiming down, but by that time the bomb is loose and he's dead) from the gunner, and most of them won't be able to do that, and even guided AA such as Shilka is limited by rotation speed.