PTAB bombs weighed 2.5 kg and had a charge of 1.5 kg. I quote:
Each IL-2 could be loaded with up to 192 PTABS in four cartridges or up to 220 in four bomb racks. When released in level flight at a speed of beteween 337 and 354 kph at an altitude of 200 meters . . . the PTAB would land with a density of one bomb per 15 meters. The PTAB load from a single IL-2 thus would cover an area of 3,000 square meters
from
Kursk the Air Battle: July 1943 Christer Bergstrom (Classic Publications, 2007), p 41.
I will relate key details from p 41 and quote a bit. (1) The PTAB "were by far the most effective" weapon against German tanks at Kursk (air weapon I presume). It could penetrate armor up to 60mms in thickness.
The bombs did not bounce off a tank "but penetrated the armor through a directed cumulative explosion which eventually set the tank burning."
There are numerous Russian after action accounts of Panther V kills and a 65 ton SPG "Ferdinand". Was first used in 1943.
(1) I think this would be a cool and historically very relevant addition to the game and the IL-2.
(2) The "drop conditions" i.e., 200 meters alt, at speed between 337- 354 kph----would be fun in game like torpedos and troops.
(3) Finally, the book I cite is FANTASTIC and might help me cook up a Euro time zone scenario. The appendices have detailed orders of battle that would be very useful. The campaign itself was fascinating and integrates GVs well. JU-87s, Ju-88s, 109Gs, 190s were the bulk of Axis forces (pity AH is missing HE 111, Ju-52) so the scenario could work on that front. AH slightly weaker on Soviet AC---but IL-2 and LA-5 were the main players----Yak-9 was present (but more Yak- 1 and 7-B). Anyway, just an aside---I'll look into it more.
<S> Impakt
oh a not very helpful Wiki
http://en.wikipedia.org/wiki/PTAB