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Germany
Flakpanzer IV 3.7cm (Ostwind)

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The Flakpanzer IV 3.7cm based on the existing PzKpfw IV and was in use from 1944 to 1945.

Flag of World War 2 Germany
Flakpanzer IV 3.7cm(Ostwind) scale illustration

General Details
Specifications
Operational Date(s)1944 - 1945
Ordnance classification
Quantity Produced44
Weightunknown
Crew6
M.G's small2
M.G's large(>10mm)n/a
Length5.95 mtr
Width2.97 mtr
Height3.00 mtr
Engine Details/Performance
Max Road Speed24 mph
Max Cross Country Speed10 mph
Range Road125 miles
Range Cross Countryunknown
Fuel TypePetrol
Fuel Capacityunknown
Horse Power300 hp
Power/Weightunknown
General Information
The Flakpanzer IV 3.7cm based on the existing PzKpfw IV and was in use from 1944 to 1945.

It was armed with 2 light machine guns. Its main armament consisted of a 3.7cm Flak 43 which could penetrate 38 mm of flat plate at 400 metres


Armour Details
Turret
Front25mm@37°(31mm)
Side25mm@30°(29mm)
Rear25mm@30°(29mm)
Topn/a
Superstructure
Front80mm@10°(81mm)
Side30mm@(30mm)
Rear20mm@11°(20mm)
Top12mm@87°(12mm)
Hull
Front80mm@12°(82mm)
Side30mm@(30mm)
Rear20mm@(20mm)
Top10mm@90°(10mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 82 mm - Minimum 10 mm



Weapon Details
Flag
3.7cm Flak 43
3.7cm Flugabwehrkanone 43
(translates as Anti Aircraft Gun)
Blank
photo of 3.7cm Flak 43 from 3.7cm Flak 43 from ww2technik.de
Calibre37mm
 
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)1002004008001200160020002400
Flight Time(Secs) 0.13 0.28 0.59 1.34 2.33 3.7 5.71 8.97
Penetration(mm@30°) 41 38 32 25 20 15 11 6
Penetration(mm@0°) 48 44 38 30 24 18 13 8
Hit Probability(%) 98 98 98 90 54 22 3 1



3.7cm Sprgr Patr 18(AA)
(HE High Explosive)
37mm 0.64Kg 820M/Sec ≈0.095Kg explosive
Maximum Range 6000 Mtr
Range(Mtr)10002000300040005000600070008000
Flight Time(Secs) 1.68 5.31 19.44
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.26 0.55 1.25 2.17 3.44 5.31 8.37
Hit Probability(%) 98 98 98 93 60 25 6 2
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill2 mtr Burst radius Infantry in open 66% kill5 mtr
Burst radius Infantry in open 33% kill13 mtr  Armour Penetration inc roof at 1 mtr0 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.

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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