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Britain
Cruiser Tank (Challenger A30)

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The Challenger tank was designed as a heavy cruiser tank that could rapidly move and provide good A/T performance, in appearance it looked like the Cavalier.

Cruiser Tank(Challenger A30) scale illustration

General Details
Specifications
Operational Date(s)1944
Ordnance classification
Quantity Produced0
Weightunknown
Crew5
M.G's small1
M.G's large(>10mm)n/a
Length8.10 mtr
Width2.92 mtr
Height2.69 mtr
Engine Details/Performance
Max Road Speed32 mph
Max Cross Country Speed15 mph
Range Road120 miles
Range Cross Countryunknown
Fuel TypePetrol
Fuel Capacity116 gal
Horse Power600 hp
Power/Weightunknown
General Information
The Challenger tank was designed as a heavy cruiser tank that could rapidly move and provide good A/T performance, in appearance it looked like the Cavalier.

The vehicle had a rear Rolls Royce Meteor engine producing 600hp driving the tracks, towards the main front idler over the 6 large road wheels, round the idler and back under the roadwheels in the standard Christie style.

The Challenger was a redesigned Cromwell designed to take the 17pdr AT gun, however too many changes were needed and only a few vehicles saw service.

Armour Details
Turret
Front76mm@(76mm)
Side63mm@(63mm)
Rear57mm@(57mm)
Top20mm@81°(20mm)
Superstructure
Front63mm@(63mm)
Side32mm@(32mm)
Rear32mm@(32mm)
Top20mm@90°(20mm)
Hull
Front57mm@(57mm)
Side32mm@(32mm)
Rear32mm@(32mm)
Top20mm@90°(20mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 76 mm - Minimum 20 mm



Weapon Details
Flag
Ordnance Q.F. 17pdr
(Anti Tank Gun)
Blank
Manufactured1942 - unknown
Calibre76.20mm
LengthL/55
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
AP(AP)
76.20mm 7.65Kg 950M/Sec
Quoted Penetration 130mm@915m
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.11 0.22 0.44 0.94 1.5 2.13 2.85 3.69
Penetration(mm@30°) 174 161 147 129 113 97 84 71
Penetration(mm@0°) 201 186 170 150 131 113 97 82
Hit Probability(%) 98 98 98 98 88 60 34 22


 
APC(APC)
76.20mm 7.71Kg 883M/Sec
Quoted Penetration 130mm@915m
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.11 0.23 0.48 1.01 1.61 2.29 3.07 3.97
Penetration(mm@30°) 162 151 137 121 106 91 78 66
Penetration(mm@0°) 188 175 159 140 123 106 91 77
Hit Probability(%) 98 98 98 98 81 57 25 22



17pdr HE(HE)
76.20mm 6.1Kg 550M/Sec 0.480Kg explosive
Maximum Range 10000 Mtr
Range(Mtr)10002000300040005000600070008000
Flight Time(Secs) 2.09 4.93 9 15.32 26.45 51.33 156.99
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 mtr1 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 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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