AA combat formula

[alexman]

The SAM battery works like this:

• For each bomber, there is a chance equal to the interception chance for the SAM to fire (50% against conventional, 5% against stealth)
• If the SAM doesn't fire, the bomber continues as if the SAM were not present. This includes the chance of getting shot down by AA fire.
• If the SAM fires, it has a A/(A+D) probability to shoot down the plane (A=8 for the SAM, D=2 for the Bomber). If the plane is not shot down, the Bomber survives, but it loses its chance to do any damage as well.

[player1]

By the way, does this mean that in PtW SAM batteries were better against Stealth unit, since they had no defenses?

EDIT:
Slightly better since there is still high 95% chance to not shoot at all.

[alexman]

I didn't test PTW, but I imagine so, yes.

[player1]

Hmm...


[thinking loudly]
Some sort of balance problem (Mobile SAM better then SAM Battery when fighting stealth).
[/thinking loudly]

[Panag]

Originally posted by player1
Hmm...


[thinking loudly]
Some sort of balance problem (Mobile SAM better then SAM Battery when fighting stealth).
[/thinking loudly]

hi ,


yes and no , .... it depends , ......


well maybe the think of mobile as more modern SAM'S , ....

have a nice day

[player1]

And both gained with same tech?

[planetfall]

What about both? If have both mobile SAMS and SAM battery, do we get 2 opportunities: 1 with mobile SAMS and 1 with SAM battery, or are all aggregated and we only get one SAM defensive opportunity?

PF

[alexman]

As I posted above, if the SAM doesn't fire, the bomber continues as if the SAM were not present. This includes the chance of getting shot down by AA fire. If the SAM fires and the plane is not shot down, the Bomber survives, but the mission is aborted so it loses its chance to do any damage as well.

[planetfall]

Interesting, so I can use both SAMs and AA for towns that are being hit hard.

[player1]

Single Flak chance to take out Stl. Bomber:
0.2/(5+0.2)=3,8%

SAM Battery chance to take out Stl. Bomber:
8/(8+5)*0.05=3,1%


Compared to:
Single Flak chance to take out Bomber:
0.2/(2+0.2)=9,1%

SAM Battery chance to take out Bomber:
8/(8+2)*0.5=40%


A drastic shift in usefulness of land AA units compared to SAM sites.

Of course, combo is the best, but combo won't really help AI, which rarely uses AA units (Flak and Mobile SAMs).


EDIT:
Fixed some errors.

[Mad Bomber]

Alexman:

it seems to me that flak units are subject to interception chances, otherwise the percentabes are higher than what I have experienced during game play.

Player1:

The AI uses SAM batteries in all of the games that I play, esp. If I have a large airforce.

[player1]

Originally posted by Mad Bomber
The AI uses SAM batteries in all of the games that I play, esp. If I have a large airforce.

That's the point.
AI mostly uses Sam batteries or Fighters, which can be easily avoided with stealth units. While rarely buidling AA units such as Flak or Mob. SAMs, which are much better in taking out stealth aircraft.

[alexman]

Originally posted by Mad Bomber
it seems to me that flak units are subject to interception chances, otherwise the percentabes are higher than what I have experienced during game play.

The AA formula I gave in the first post is confirmed by literally thousands of tests. So unless you have the data to back up your comment above, I don't believe you.

[player1]

AA has nothing to do with interception chance.
For testing I just put it at 0% for all planes, and AA units worked normally against them.

[Mad Bomber]

Originally posted by alexman


The AA formula I gave in the first post is confirmed by literally thousands of tests. So unless you have the data to back up your comment above, I don't believe you.

I admit that I haven't done any tests, but I have played the WWII conquests many times. Even with three flak units in Manila, The Japanese do not seem to suffer more than about a 20% loss rate per unit attacking.

It could be that I am having bad luck, but with litterally hundreds of attacks experienced, I might need to get a 4-leaf clover or a rabbits foot.