Naval History Forums

The statement that british armour was "definitely superior to german armor" was replaced in 1948 by a smother formulation " british armor was probably better" with reference to these tests in 1946. ADM 281/127 ARMOUR TECHNICAL COMMITTEE Meeting 22th July 1948 Even the pieces were...

standard steel core projectile each the projectiles were testet against homogenous plate there is also a difference between the projectiles the cavity of the 7,5 and 8,8 cm shots was relatively small, compared to the naval projectiles. From this point of view the likehood of Heilbleiben is potential...

So 310 mm US Class A seem to be equivalent to 294 mm KC (nA). This raw thickness seem to be penetrable at around 20000 m ~ 22 kyard (Obliqity 14°+19° ~34 degrees, impact speed ~510 m/s). maybe somwhat less if you add around 10m/s for hull plating and other non ballistic plate Krupp testing showed p...

according to Nathan Okuns calculations german KC 8nA) seem to have a equivalent thickness compared to US Class A of at least 106,5 %. This relationship appears to be applicable to angles of incidence from 0 - 30 deg. advantage for KC is higher at lower angles of incidence. So 310 mm US Class A seem ...

but even the scheme offers protection for the parts below the Panzerdeck in remote attacks, Bismarck type ships must take into account probably more successive damage to the parts above the panzerdeck compared to the other ship, when their shells didnt pentrate trough the armor deck and belt. on the...

from http://warships1discussionboards.yuku.com/topic/16578/Philosophy-of-german-post-ww1-battleship-protection quote from my own Excerpt from "Unterlagen zur Bestimmung der Hauptkampfentfernung..." Based on the experience of Worldwar I and as a result of the development of weapons, armor p...

It has often emerged that official range tables and documents like GKdos100 incorporated extrapolated, estimated, or computed data (as opposed to validated empirical data). B report 166 Lilienthalgesellschaft processes at shelling of armor plate Berlin May 1943 Lecture B. Hoyer "Calculation of...

german standard procedure for heavy AA was to start with 28 sec calculated projectile-flighttime with 3-5 sek intervalls between following salvoes depending on caliber

The ballistics of the projectile for varying Vo can be determined from the Tagesverbesserungstafeln. You get then impact angle and -velocity for any given Vo and elevation. With this data you can determine the corresponding penetration data from the penetration graphics, wich are plotted for every c...

The thing with "bad" French armor is mentioned in Bericht 166 of the Lilienthalgesellschaft armor Meeting Berlin 1943 "armor materials and armor pentration process"

but there was only a qualitative statement from comparative AP shots against french armor but no in dept analysis.

The gun was developed from the beginning as having 820m/s muzzle velocity. Krupp data and data from navy service regulations for ammunition are going conform to a 820 m/s muzzle velocity gun. This MV referring to 210 kg RPC 32 or later 212 kg RPC 38 according rangtable for the projectile from GKdos ...

regarding alleged poor plate according Unterlagen zur Bestimmung Hauptkampfentfernung und Geschoßwahl Heft a Textband Excerpt The Upper Limit It should be noted about the safety of horizontal protection against penetration, that results in the pentration-expectations at the relatively small impact a...

Armour technical meeting 20 th november 1947 british measurments of german 4 1/2" N.C. plates plate No 37363 (Good plate) Mechanical testing 50% Proof stress ton/in²-35.6 Maximum stress ton/in²- 47.7 Elongation % -28.6 long Reduction of Area %- 67.6 plate limit 1100 ft/s at 65 deg against 15&qu...

http://oai.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA415948 klick on handle The kill ratio of heavy tank battalions when measured against Tigers lost in direct combat is an impressive 12.2 to 1. The ratio as measured against all Tigers lost, regardless of reason, is s...

Unfortunately the british experts didnt take any notice about the protective effect of the scarp even in 1946.

RobertsonN

(ADM481, Suppl. 6)

is not a admirality report (ADM) but a report of Ministry of Supply (SUPP).