What bothers me most is the fact that the KA-60 cockpit windows are bullet-proof.

Having a parked KA-60 and letting a squad with just machine-guns attack it, the pilots are pretty much safe from any harm. You can shoot all your bullets into the window without even a scratch... I get that they are designed to be bullet-proof, but bullet-proof windows in real life are really just 'bullet-resistant'. After several rounds they will give way. And so they should in the simulation.

peppering a helicopters fuselage with bullets (even up to 20mm for some helicopters) is not going to cause much damage, you have to go for the vital parts such as the main or anti-torque rotors but considering that this is a simulator and that reality is really hard to mimic then maybe faring at the fuselage actually dose something i don't know

by the way BloonerNL i have found that even though the windows of the Ka-60 are bulletproof the doors and framework is not. i fired a couple of rounds into the door and the pilot was dead, kind of weird that the windows are 100% bullet proof but the doors provide almost no protection.

ifrit takes less hits than the ah-9? madness

So does a (any) heli have a damage model? Hitboxes? Hitpoints? Armor? Durability? Or maybe nothing at all?

I want to see the devs explaining how the damage (if any) is supposed to work.

Ka-60 is especially resistant to 7.62 miniguns. Three AI minigun boats needed 14 minutes (!) to bring me down, while I was hovering 100m away, with the tail towards them, to protect the crew, who is rather vulnerable to being killed. Three Hunters HMG took me out reasonably sooner in the same situation.

While dogfighting the KA-60 from an AH-9, I needed almost 3000 bullets to disable its engine. Most of them were on target, as I was shooting at point blank and saw the hits.

What is even more interesting, I never saw any HULL damage on Ka-60, only rotors, engine and sometimes instruments. Most often I was shot down because the crew was killed, rather than the aircraft was disabled.

Ka-60 is a civilian helicopter, only adapted to perform combat missions. Even if it had some kind of armor fitted, it shouldn't be too tough. Think UH-1 here.

Agreed, the KA-60 seems to be very resistant against bullets. I got sniped out from pilot seat a time or two though when I was far away from the enemy, so there's a weak point somewhere around the cockpit. Maybe it's the doors.

On the other hand, some parts, especially instruments are very sensitive to collision damage – especially the HUD starts flashing very easily.

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well the front panel windows seem to be bullet proof, but the side windows (door) is where it isn't, so no big deal there really. The caliber of the rounds obviously matter the most here, the bigger the more damage seeing as it actually has more potential to penetrate light armour. If 696 rounds of 12.7mm is what it took to take down the KA-60, then i agree it is a bit too powerfull. I can understand that if it was small arms up to 7.6mm though.

I am with tree hugger here on a brief explanation or presentation from BIS to see how vehicles hitpoints/hitboxes armour etc work? Because I have logged a ticket for armoured vehicles like Hunter and ifrit that go up in flames when shot up with small arms. MATV's are suppose to be able to shrug off RPG's and drive away from mine/IED hits, yet it seems awfully weak in game. I dont even know if armour really even plays a role? But none the less, I would like to see and study a presentation of how the damage system on vehicles work, this will be very educational, and I bet many will start finding bugs and stuff to exploit which will lead to patching up before final relaese =)

Test results in latest dev build:
Nose and all glass: impervious to everything up to 7.62x51mm. Depending on angle it may even stop .408 or 12.7x99mm.
Lower door: impervious to 5.56mm and 6.5mm from assault rifles. It takes 34 rounds from a 6.5mm LMG, 7 rounds of 7.62x51mm and 1 round of .408 or 12.7x99mm to kill the pilot.

Not only is it near impossible to kill the pilots, the armour of the Ka-60 is inconsistent.