Armor Penetration Calculator

[Brady]

Ok, this looks Much Better, Thanks for 60 Degrees ! For the German 3.7cm and the French guns apart from the 25 mm SA 34 and that seams like it more realistic the Blue way around.




BTW, I see conflicting references for the 3.7 cm KwK AP round designation it seems simply PzGr was correct (Or PzGr 18?)?

[peeved]

Your 25 mm SA 34 figures seem a tad low; According to most German stats for 2,5 cm Pzgr.Patr. 114 (f) ammunition (v0 920 m/s) I've seen they typically were (at 60 deg impact angle) 35 mm #100 m, 29 mm # 500 m and 20 mm # 1000 m. According to Kennblätter fremden Geräts; Heft 8a - Munition bis 3,6 cm though, the penetration was the same as for 2,5 cm Pzgr Patr ( m Überldg) 122 (f) ammunition (v0 950 m/s) on page 1 of the thread (Only a sillimeter of difference # 500 m).

Then again the French 25 mm may yield some odd results for oblique plates since the AP projectiles were more akin to a small arm AP bullet (FMJ with steel penetrator) than a typical AP shot.

AFAIK normally 3,7 cm Pzgr. for Pak/KwK and 3,7 cm Pzgr. 18 for Flak.

Markus

[Mobius]

Then again the French 25 mm may yield some odd results for oblique plates since the AP projectiles were more akin to a small arm AP bullet (FMJ with steel penetrator) than a typical AP shot.

Those French AP projectiles seem to have streamlined contoured AP caps. As per the data don't seem to be as effective at the oblique.

[Brady]

This is how they came out for the SA 34:



And:




I was particularly interesting in comparing the different values for the French APX 47 and the 47 mm Tanks gun:

[Mobius]

I was particularly interesting in comparing the different values for the French APX 47 and the 47 mm Tanks gun:

Do you have something that shows the ballistics?

[Brady]

I was particularly interesting in comparing the different values for the French APX 47 and the 47 mm Tanks gun:

Do you have something that shows the ballistics?

No

[Mobius]

Does that system use the same slope in penetration values for all shells?

[Peasant]

You can use the UK NPL formula to estimate shell performance for obliquities up to 45°, work pretty well in most situations: https://forum.warthunder.com/index.php? ... hal-e-hock
But it gives you critical velocities not distances, so you will need to find firing tables for that gun as well.

[Mobius]

You can use the UK NPL formula to estimate shell performance for obliquities up to 45°, work pretty well in most situations: https://forum.warthunder.com/index.php? ... hal-e-hock
But it gives you critical velocities not distances, so you will need to find firing tables for that gun as well.

That's the problem. You have to reverse engineer the ballistics of French guns.

[Thoddy]

You can use the UK NPL formula to estimate shell performance for obliquities up to 45°, work pretty well in most situations: https://forum.warthunder.com/index.php? ... hal-e-hock

Figure 3 was taken from SUPP-6/910 The Penetration of armour plate from 10/5/1950.
Its a summarized report of terminal ballistics knowledge.
Report is here.
https://drive.google.com/file/d/0B12aaM ... p=drivesdk

[Thoddy]

You can use my naval armor and ballistics program.
http://www.panzer-war.com/Naab/NAAB2x.zip
Or my DeMarre program
http://panzer-war.com/Files/redstardemarre.zip

For validating your program you can use
TM 9-1907
Handbook of Ballistic and Engineering Data For Ammunition Volumes 1 - 3
i made also a superficial comparision with a german Pzgr 39/43 for 75 mm caliber
https://www.forum.axishistory.com/viewt ... 4#p2296714

[Mobius]

For validating your program you can use
TM 9-1907
Handbook of Ballistic and Engineering Data For Ammunition Volumes 1 - 3
i made also a superficial comparision with a german Pzgr 39/43 for 75 mm caliber
https://www.forum.axishistory.com/viewt ... 4#p2296714

I've made WWII shell entries that can mimic the US Engineering data tables vs. WWII Class B armor. I made certain factors that could be fine tuned to achieve this.

[sandrabsh]

For validating your program you can use
TM 9-1907
Handbook of Ballistic and Engineering Data For Ammunition Volumes 1 - 3
i made also a superficial comparision with a german Pzgr 39/43 for 75 mm caliber
https://www.forum.axishistory.com/viewt ... 4#p2296714

I've made WWII shell entries that can mimic the US Engineering data tables vs. WWII Class B armor. I made certain factors that could be fine tuned to achieve this.

where can I check those exactly?