Roll damage fix
grab the zip here (installation instructions included, 6k): rollfix.zip

This mod attempts to model flak damage in a more realistic way. In fact, one of the most common complaints heard on the net about CFS2 is the fact that as soon as a flak burst appears on the horizon, your aircraft is slightly damaged, the smallest hole appears on a wing, and your aircraft suddenly loses 90% of its roll ability. After some thought, and the realization that this only happens with flak damage (the likelyhood of roll damage due to machine guns or cannons is much more remote), I went and studied the flak effects files.

What I found is that the range of flak damage goes from a minimum of 100 to a maximum of 225 (meters I suppose, since the effects files parameters appear to be consistently in international system units), whereas the actual hit points are quite low.

The fact that even a light flak burst always damages an aircraft 100 meters (330 feet) away seems rather unrealistic.

So I reduced the radius of the damage area to one third of the original value; correspondingly I increased by a factor of 10 the hit points; basically I concentrated 10x the damage in an area 10x smaller, obtaining roughly the same explosive energy of the original flak burst, but concentrated in a smaller area.

After some testing in missions and campaign I can say that, whereas aircraft (both AI and human) are fatally hit by flak roughly at the same rate as before, it's very rare to get roll damage; in fact, when you're hit, the damage is much worse (even if often survivable) but the chances of being hit are much lower (like the real thing, by the accounts we have all read).

In conclusion, you can expect to be hit by flak more rarely, but much more seriously. The only price to pay is that you don't experience those nice blast waves as often as before ;-)