Among the values assigned to TOAW equipment, I've always found the AA ratings a bit mysterious.
For the guns (for missiles I have no idea what criteria was used), I have found what appears to be the method by which the AA rating was derived.
The AA rating for guns is the cube root of the weight of fire (in kilograms) for the weapon in 30 seconds, rounded down.
(Weight of fire in this case is the total weight of projectiles fired in 30 seconds, rate of fire considered as cyclic.)
This calculation works for weapons with single barrels. For weapons with more than one barrel, add one to the result for each additional barrel ... but add no more than two to the result, no matter how many barrels the weapon has. Thus, in TOAW, a "generic 20mm AA gun" has an AA rating of 3, a twin-barreled 20mm AA gun has an AA rating of 4, and both the triple 20mm and quad-20mm AA gun have an AA rating of 5.
There are items of equipment that do not follow this rule, the 40mm AA gun being a prominent "violator". Not sure why that is the case, perhaps simply they are errors. If anyone knows why the 40mm Bofors should be rated at double that of a 37mm AA gun, please advise. Using the above rule, the 40mm AA gun should have an AA rating of 3, not 6 as it is in the database today.
< Message edited by cathar1244 -- 6/6/2019 6:27:13 AM >