The 2cm Flak auf Fahrgestell Zugkraftwagen 1t, it was based on the SdKfz 10 Halftrack chassis and was in use from 1938 to 1945.

General Details (SP Anti Aircraft) Specifications Operational Date(s) 1938 - 1945 Ordnance classification Sdkfz 10/4 Quantity Produced 610 Weight unknown Crew 7 M.G's small n/a M.G's large(>10mm) n/a Length 4.75 mtr Width 1.93 mtr Height 2.00 mtr Engine Details/Performance Max Road Speed 41 mph Max Cross Country Speed unknown Range Road 188 miles Range Cross Country unknown Fuel Type Petrol Fuel Capacity unknown Horse Power 100 hp Power/Weight unknown General Information The 2cm Flak auf Fahrgestell Zugkraftwagen 1t, it was based on the SdKfz 10 Halftrack chassis and was in use from 1938 to 1945. Its main armament consisted of a 2.0cm Flak 30 which could penetrate 45 mm of flat plate at 100 metres Its main armament consisted and a 2.0cm Flak 38 L/112.5 which could penetrate 45 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 2.0cm Flak 30 2.0cm Flugabwehrkanone 30 (translates as Anti Aircraft Gun) History Originally produced for the German Navy was then taken over by the Luftwaffe as an Anti aircraft gun, the Flak 30 was slowly replaced by the Flak 38 which had a higher rate of fire Manufacturer Rheimetal Manufactured 1934 - 1945 Calibre 20mm Length L/65 Rate of Fire 280 rpm Number of Rounds  100 Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content 2.0cm PzGr 39 (AP Armor Piercing) 20mm 0.12Kg 899M/Sec Quoted Penetration 23mm @ 100mtr/30° ( ? 26mm/0?) Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.11 0.22 0.45 0.89 1.34 1.78 2.23 2.67 Penetration(mm@30°) 38 38 38 38 38 38 38 38 Penetration(mm@0°) 45 45 45 45 45 45 45 45 Hit Probability(%) 74 74 74 70 62 52 42 28 2.0cm PzGr 40 (APCR Armor Piercing Composite Rigid) 20mm 0.115Kg 1060M/Sec Quoted Penetration 40mm @ 100mtr/0° Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.09 0.19 0.38 0.75 1.13 1.51 1.89 2.27 Penetration(mm@30°) 53 53 53 52 52 52 52 52 Penetration(mm@0°) 62 62 62 61 61 61 61 61 Hit Probability(%) 74 74 74 72 67 59 52 42 2 cm Sprgr. 39 (HE High Explosive) 20mm 0.132Kg 995M/Sec 0.006Kg explosive Maximum Range 2000 Mtr Range(Mtr) 500 1000 1500 2000 2500 3000 3500 4000 Flight Time(Secs) 0.6 1.37 2.28 3.29 4.36 5.46 6.56 7.66 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 0.00 0.00 0.00 0.00 80% of shells land within +/- (mtr) 0.17 0.35 0.51 0.68 95% of shells land within +/- (mtr) 0.25 0.53 0.78 1.04 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 80% of shells land within +/- (mtr) 0.22 0.42 0.64 0.86 95% of shells land within +/- (mtr) 0.33 0.65 0.98 1.31 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 Flight Time(Secs) 0.11 0.22 0.48 1.11 1.85 2.68 3.54 Hit Probability(%) 74 74 74 67 52 28 11 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 0 mtr Burst radius Infantry in open 66% kill 0 mtr Burst radius Infantry in open 33% kill 1 mtr  Armour Penetration inc roof at 1 mtr 0 mm An explosion within 0 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 1 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. Weapon Details 2.0cm Flak 38 L/112.5 2.0cm Flugabwehrkanone 38 L/112.5 (translates as Anti Aircraft Gun) History Originally developed for the Luftwaffe to replace the slower firing 2cm Flak 30, this became the main low level Anti Aicraft gun in the German Forces. The Flakvierling was a four barreled version that had a rate of fire of 1680 rounds per minute and was mounted on a variety of vehicles. Manufacturer Mauser-Werke Manufactured 1940 - 1945 Calibre 20mm Length L/112 Rate of Fire 420 rpm Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content 2.0cm PzGr 39 (AP Armor Piercing) 20mm 0.12Kg 899M/Sec Quoted Penetration 23mm @ 100mtr/30° ( ? 26mm/0?) Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.11 0.22 0.45 0.89 1.34 1.78 2.23 2.67 Penetration(mm@30°) 38 38 38 38 38 38 38 38 Penetration(mm@0°) 45 45 45 45 45 45 45 45 Hit Probability(%) 74 74 74 70 62 52 42 28 2.0cm PzGr 40 (APCR Armor Piercing Composite Rigid) 20mm 0.115Kg 1060M/Sec Quoted Penetration 40mm @ 100mtr/0° Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.09 0.19 0.38 0.75 1.13 1.51 1.89 2.27 Penetration(mm@30°) 53 53 53 52 52 52 52 52 Penetration(mm@0°) 62 62 62 61 61 61 61 61 Hit Probability(%) 74 74 74 72 67 59 52 42 2 cm Sprgr. 39 (HE High Explosive) 20mm 0.132Kg 995M/Sec 0.006Kg explosive Maximum Range 2000 Mtr Range(Mtr) 500 1000 1500 2000 2500 3000 3500 4000 Flight Time(Secs) 0.6 1.37 2.28 3.29 4.36 5.46 6.56 7.66 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 0.00 0.00 0.00 0.00 80% of shells land within +/- (mtr) 0.17 0.35 0.51 0.68 95% of shells land within +/- (mtr) 0.25 0.53 0.78 1.04 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 80% of shells land within +/- (mtr) 0.22 0.42 0.64 0.86 95% of shells land within +/- (mtr) 0.33 0.65 0.98 1.31 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 Flight Time(Secs) 0.11 0.22 0.48 1.11 1.85 2.68 3.54 Hit Probability(%) 74 74 74 67 52 28 11 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 0 mtr Burst radius Infantry in open 66% kill 0 mtr Burst radius Infantry in open 33% kill 1 mtr  Armour Penetration inc roof at 1 mtr 0 mm An explosion within 0 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 1 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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