The 3.7cm Flak36 auf Fahrgestell Zugkraftwagen 8t, it was based on the Halftrack chassis and was in use from 1943 to 1945. General Details (SP Anti Aircraft) Specifications Operational Date(s) 1943 - 1945 Ordnance classification Sdkfz 7/2 Quantity Produced 123 Weight unknown Crew 10 M.G's small n/a M.G's large(>10mm) n/a Length 6.85 mtr Width 2.40 mtr Height 2.62 mtr Engine Details/Performance Max Road Speed 31 mph Max Cross Country Speed unknown Range Road 156 miles Range Cross Country unknown Fuel Type Petrol Fuel Capacity unknown Horse Power 140 hp Power/Weight unknown General Information The 3.7cm Flak36 auf Fahrgestell Zugkraftwagen 8t, it was based on the Halftrack chassis and was in use from 1943 to 1945. Its main armament consisted of a 3.7cm Flak 36/37 which could penetrate 49.9 mm of flat plate at 100 metres Armour Details Turret Front n/a Side n/a Rear n/a Top n/a Superstructure Front n/a Side n/a Rear n/a Top n/a Hull Front n/a Side n/a Rear n/a Top n/a Armour (x)mm @ (y)° (Effective mm @ 0°) Weapon Details 3.7cm Flak 36/37 3.7cm Flugabwehrkanone 36/37 (translates as Anti Aircraft Gun) History Redesign of the 3.7cm Flak 18 to reduce overall weight and portability. Manufacturer Rheinmetal Manufactured 1936 - 1945 Calibre 37mm Length L/85 Rate of Fire 820 rpm Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content 3.7cm Pzgr Patr 18 (AP Armor Piercing) 37mm 0.68Kg 762M/Sec Quoted Penetration 31mm @ 500mtr/30° ( ? 35mm/0?) Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.13 0.27 0.57 1.23 1.97 2.79 3.68 4.63 Penetration(mm@30°) 43 40 36 28 22 17 13 10 Penetration(mm@0°) 50 47 42 33 26 20 16 12 Hit Probability(%) 79 79 76 71 55 30 12 6 3.7cm Sprgr Patr 18(AA) (HE High Explosive) 37mm 0.64Kg 820M/Sec ≈0.095Kg explosive Maximum Range 6000 Mtr Range(Mtr) 500 1000 1500 2000 3000 4000 5000 6000 Flight Time(Secs) 0.67 1.46 2.37 3.38 5.64 8.15 10.78 13.45 lateral dispersion means the side to side variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.13 0.27 0.40 0.53 0.80 1.07 1.33 1.60 80% of shells land within +/- (mtr) 0.17 0.35 0.51 0.68 1.02 1.37 1.70 2.05 95% of shells land within +/- (mtr) 0.25 0.53 0.78 1.04 1.57 2.10 2.61 3.14 range dispersion means the back to front variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.17 0.33 0.50 0.67 1.00 1.33 1.67 2.00 80% of shells land within +/- (mtr) 0.22 0.42 0.64 0.86 1.28 1.70 2.14 2.56 95% of shells land within +/- (mtr) 0.33 0.65 0.98 1.31 1.96 2.61 3.27 3.92 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.13 0.26 0.54 1.18 1.92 2.75 3.64 4.6 Hit Probability(%) 79 79 76 71 55 30 12 6 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 2 mtr Burst radius Infantry in open 66% kill 5 mtr Burst radius Infantry in open 33% kill 13 mtr  Armour Penetration inc roof at 1 mtr 0 mm An explosion within 2 mtr of infantry in the open will cause 99% casualties - lethal. An explosion within 5 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 13 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 not cause any significant armour damage. About Penetration Figures All penetration figures in this database are calculated to a common standard based on German WWII testing criteria (complete penetration with functioning fuze). This allows direct comparison between all nations' guns. Original national test figures would be higher for some nations due to different criteria: German: 1.00? (baseline - strictest) British: 1.02? (slightly looser) American: 1.05? (50% mass through plate) Soviet: 1.10? (75% mass through plate) For example, a Soviet gun showing 159mm here would be published as ~175mm in Soviet documents, and a German gun showing 120mm would be published as 120mm in German documents. The 159mm figure is directly comparable to the German 120mm - the Soviet gun really was more powerful. National Testing Standards German: 1.00? - Complete penetration, fuze functions (strictest) British: 1.02? - Complete penetration American: 1.05? - 50% of shell mass through plate Soviet: 1.10? - 75% of shell mass through plate All database figures are normalized to German standard for direct comparison. Multiply by the factor above to see original national test figures.

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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