Germany
SdKfz 251/ 9 Ausf A,B,C 7.5cm StuK 37 L/24 (Hanomag)
Ordnance classification - SdKfz 251/9

Tweet The SdKfz 251/ 9 Ausf A,B,C 7.5cm StuK 37 L/24 was designed in 1936, manufactured by Hanomag Borgward based on the existing half track SdKfz 251 Ausf A and was in use from 1937 to 1945. General Details Specifications Operational Date(s) 1937 - 1945 Ordnance classification SdKfz 251/9 Quantity Produced 0 Weight 8 tonne Crew 3 M.G's small n/a M.G's large(>10mm) n/a Length 5.85 mtr Width 2.12 mtr Height 2.07 mtr Engine Details/Performance Max Road Speed 33 mph Max Cross Country Speed 16 mph Range Road 188 miles Range Cross Country 94 miles Fuel Type Petrol Fuel Capacity unknown Horse Power 100 hp Power/Weight 12 hp/tonne General Information The SdKfz 251/ 9 Ausf A,B,C 7.5cm StuK 37 L/24 was designed in 1936, manufactured by Hanomag Borgward based on the existing half track SdKfz 251 Ausf A and was in use from 1937 to 1945. The vehicle was powered by Maybach 'HL-42' petrol powerplant producing 100 HP which could drive the vehicle on roads at up to 33 mph with a range of about 188 miles before refuelling. Its cross country performance was good providing a max speed of about 16 mph and a range of about 94 miles. Its main armament consisted of a 7.5cm StuK 37 L/24 which could penetrate 73 mm of flat plate at 100 metres The SdKfz 251 series of vehicles were the first purpose built Armoured personel carriers. The vehicles could carry 10 panzer grenadiers in a small arms and shrapnel protected space. Armour Details Turret Front n/a Side n/a Rear n/a Top n/a Superstructure Front 10mm @ 33° (12mm) Side 8mm @ 35° (10mm) Rear 8mm @ 40° (10mm) Top n/a Hull Front 15mm @ 21° (16mm) Side 8mm @ 35° (10mm) Rear 8mm @ 30° (9mm) Top 6mm @ 90° (6mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 16 mm - Minimum 6 mm Weapon Details 7.5cm StuK 37 L/24 (Tank Gun) Calibre 75mm Length L/24   Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content K. Gr. rot Pz (AP Armor Piercing) 75mm 6.8Kg 385M/Sec Quoted Penetration 38mm@500m/30° Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.26 0.53 1.1 2.33 3.71 5.28 7.09 9.17 Penetration(mm@30°) 63 58 53 46 40 35 30 25 Penetration(mm@0°) 73 68 62 54 47 41 35 29 Hit Probability(%) 98 98 98 54 22 6 2 1 7.5 cm Sprgr.34 - short (HE High Explosive) 75mm 4.4Kg 385M/Sec 0.454Kg explosive Maximum Range not shown as gun elevation is limited Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.26 0.53 1.1 2.33 3.71 5.29 7.09 9.17 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.26 0.53 1.1 2.33 3.71 5.29 7.09 9.17 Hit Probability(%) 98 98 98 54 22 6 2 1 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 3 mtr Burst radius Infantry in open 66% kill 6 mtr Burst radius Infantry in open 33% kill 16 mtr  Armour Penetration inc roof at 1 mtr 1 mm An explosion within 3 mtr of infantry in the open will cause 99% casualties - lethal. An explosion within 6 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 16 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 1 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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