Board Thread:Game Updates/@comment-25730832-20151013050733/@comment-26486243-20151116081542

Vcharng wrote: Konstantillo wrote: Vcharng wrote: Tennousu wrote: Isn't that 67% chance to proc, though? I'll have to check the Japanese wiki for details, what I was trying to say was that the "7 aircraft shot down" was just part of the effect of AACI.

Total aircraft shot down= Percetage kills + Fixed kills. If a setting has a percentage kill of 67% and a fixed kill of 7 aircrafts, and encountered a 20-plane slot, it would shot down 20*67% + 7 = 13+7= 20 aircrafts. (in other words, this slot is wiped out.)

Now think about this happening to 24 slots. By one destroyer alone. WTF?

If speaking about number, stated in this table, 67% is trigger rate of aaci, not percentage shot down.

I calcuated it now, and seems that Teruzuki shoot down  nearly 30% of the slot in proportional formula. Alright, I went to check the wikiwiki. And you are right, 67% was not the percentage kill, the percentage kill was around 55%.

Akizuki w/ HHR config gives 221.7 adjusted AA, so it gives 199/360 (after all the flooring, rounding, etc.) proportional kills, roughly equal to 55.3%.

Now, proportional kills have a (estimated) 50% chance of success, just like fixed kill, so if AACI succeeds on a single Akizuki w/ HHR, in line ahead:

25% chance of 55.3%+ 23 aircraft ((221.7+12)/10＝23 fixed kill, regardless of the slot size )+1 aircraft shot down

25% chance of only 55.3% +1 aircraft shot down

25% chance of 23+1 aircrafts shot down

25% of only 1 (minimum guaranteed kill) shot down.

In other words, as long as AACI succeeds, any slot with less than 24 planes have 50% chance to be wiped out, and another 25% chance of losing about half of its aircrafts before having any chance to attack.

Compare Operation Ten-Go with a certain Niconico test video, AACI is approximately 480 times more effective than real life WWII AA fires, or around five times the effect of an Arleigh Burke-class destroyer (since it carries 90 missiles). Non-AACI fires are also around 5~10 times more effective than their real life counterpart.

The fixed kill bonus of 7 didn't mean only 7 will be shot down in this part, my mistake.

Edit: I thought Ten-Go only involves 6 ships in the IJN side, corrected estimation. Close, but still not exactly correct.


 * Base AA applies only to a bomber squadron assigned to a ship.


 * Akizuki's AA with unupgraded equipment is 116+4(10)(2)+3(4) = 208. Can be higher if upgraded.


 * Akizuki's fleet AA contribution with the same equipment is 8. Can be higher if upgraded.

The following apply only on the chance an enemy bomber squadron are assigned to Akizuki (about 1/6, may be higher if flagship gets targeted less often), and apply only to those squadrons.


 * 25% chance of variable kill at strength = 187/360 ~ 51.9% shot down


 * 25% chance of fixed kill at strength = 22 shot down regardless of formation (differences obliterated by rounding). More might be shot down from the fleet AA contribution of other ships.


 * 25% chance of 51.9% + 22 shot down.


 * 25% chance of zero shot down from the squadron.

The following apply only to enemy bomber squadrons NOT targeted by Akizuki.


 * Akizuki adds 1 to 2 bomber-kills from the fixed kill phase of other ships only if they trigger, with her fleet AA bonus.

The following applies only on the independent chance that AACI triggers. This chance depends only on equipment setup and Akizuki's AA value.


 * 7 bombers from ALL enemy bomber squadrons are shot down.

The following applies regardless of ANY of the above and regardless of which ship an enemy bomber squadron is assigned to:


 * 1 bomber from ALL enemy bomber squadrons are shot down.

The last isn't changed by Akizuki's presence or absence. The majority of Akizuki-kills for any bomber squadron assigned to her will be due to her base AA, not AACI. However, the majority of Akizuki-kills for any bomber squadron NOT assigned to her will be due to her AACI, and a smaller proportion from her equipment fleet AA bonus.