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Britain
Ordnance Q.F. 3.7inch AA

Showing the details of the shells used(where known)
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Weapon Details
Flag
Ordnance Q.F. 3.7inch AA
(Anti Aircraft)
Blank
Manufactured1937 - 1945
Calibre94mm
LengthL/50
 
3.7inch AA AP
(AP Armor Piercing)
94mm 12.96Kg 792M/Sec
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.26 0.53 1.1 1.74 2.43 3.21 4.07
Penetration(mm@30°) 199 187 174 158 142 127 113 100
Penetration(mm@0°) 230 217 202 183 164 147 131 116
Hit Probability(%) 98 98 98 98 77 48 25 15



3.7inch AA HE
(HE High Explosive)
94mm 12.96Kg 800M/Sec ≈1.944Kg explosive
Maximum Range 12500 Mtr
Range(Mtr)10002000300040005000600070008000
Flight Time(Secs) 1.4 3.18 5.51 8.7 13.35 20.74 34.27 67.15
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.26 0.52 1.09 1.72 2.41 3.18 4.03
Hit Probability(%) 98 98 98 98 77 48 25 15
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill4 mtr Burst radius Infantry in open 66% kill8 mtr
Burst radius Infantry in open 33% kill22 mtr  Armour Penetration inc roof at 1 mtr5 mm
An explosion within 4 mtr of infantry in the open will cause 99% casualties - lethal.
An explosion within 8 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 22 mtr of infantry in the open will cause 33% casualties.
The blast effect of this shell exploding within 1 mtr of an armoured vehicle will penetrate 5 mm of the tank armour including the roof.

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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