vikingrGER

ID:0047652 28/Aug/16 Fix ammunition of Brummbär (150mm J.Gr.39 HL/A)

Hello,

 

the penetration values of the Jgr. 39 HL/A were reduced from 250mm (@90°) to 160mm (@90°) short time ago. Were ever the 250mm value came from, 160mm is still the wrong penetration value and should be fixed. That's how they look at the moment in game (German language but you get the idea):

J.Gr.39 HLA.jpg

 

160mm is the value you find in German documentations often, but the German army always considered values measured with an 30°/60° angle. The real value @90° should be 185mm therefor.

 

See this documents as a proof:

source1.jpg

First sentence translated "Penetration values refer to firing at an angle a = 60°."

 

image.jpg

Underlined sentence translated: "Penetration value: 160mm thick armourplate with 15cm Jgr. 39 HL/A"

 

fdgdg.jpg.0c65eb847ee2072843ea86ed349031d7.jpg

This source is considering an 90° angle, therfor the value of the 15cm Jgr. 39 HL/A also known as 150L11 HEAT is 185mm.

 

VIuadzx.jpg

Look at the third bar from right.

 

source3.jpg

You can read at the top, that the considered angle is 30° (/60°).

 

Sources:

Waffen-Revue supplement "Dokumentation W 127: Datenblätter für Heeres-Waffen, Fahrzeuge, Gerät" (ISBN 3-88088-213-4, pg. 5, 79, online: https://de.scribd.com/doc/230234125/Dokumentation-W-127-Datenblatter-fur-Heeres-Waffen-Fahrzeuge-Gerat)

World War II Ballistics: Armor and Gunnery (Lorrin Rexford Bird, 2001, Overmatch Press, Albany N.Y./USA, pg. 62)

BIOS Report "German Steel Armour Piercing Projectiles & Theory of Penetration" ADM 213/951, see 150mm Gr39HL/A - 160mm penetration @ 60 deg from horizontal (German criteria)

Appendix I: German Tank Armament (pg. 245)

 

Thanks to everyone who posted those sources!

 

Clog file:

2016_08_20_10_00_04__5852.clog

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Hello!

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