Mobius' Dispatches from the Front

Jan. 23, 2019
A new version of NaaB2 has been released.  It has examples of tank and AT guns in the gun list.  Also, it is modified to have optional shell quality assigned to individual shells.  The quality tries to match US Army Aberdeen ballistic graphs. Other guns and shells for other armies are matches from these.  The results were for US WWII class 'B' non-cemented 237 BHN steel armor.   This is then normalized to 270 BHN armor. The data is here: link

Jan. 21, 2019
I had to redo the French. Italian and Polish calculated tables as I based the values on US shells.  But I found the US ballistic graphs I used to calibrate the ballistics had problems..  I guess the later year graphs updated early war graphs but I had used the earlier ones as a basis for the shell data.  I had to modify Naab2 so that it can read the shell quality from the Projinfo file.  Also, the AP cap of medium hardness is lowered a little.  I haven't updated this version for download yet.  I'm still trying to get the ballistic coefficients correct.

Jan. 15, 2019
British and American gun penetration data pages added.

Dec. 24, 2018
Added small program (Red Star DeMarre) to calculate armor penetration or determine striking velocity using DeMarre formula as the Russians used it during WWII.     Link to download page.

Dec. 19, 2018
NaaB is updated to 2.27. I got rid of some bugs and added Elevation and time of flight to the Ballistics page.

Dec. 10, 2018
In making my mock Wiki gun tables I found some anomalies in the data.  These turned out to be most often typographical errors in the sources.  After correcting these I have to rebuild the various gun tables.  And I only have been working with the Russians and Germans.  No telling what I'll find when reviewing the other nations.
 

Dec. 4, 2018
To build the Panzerpedia tables I had to write a program to make HTML blocks from data files. 


Dec. 2, 2018
We need more living space.  Thus I'm annexing another 6 links on the menu to expand.   Besides the Russian data I'm going to have true data on Germans and Allied.  Not to compete with German tank sites which still feature real data but the data will in US units.

Nov. 30, 2018
I'm noticing the english Wikipedia entries of tank gun data is being taken over by WW2 Ballistics:  Armor and Gunnery.  Nothing against Lorrin Bird and Robert Livingston but their data is not real data.   It is calculated data.   I already dedicated one page to where their data is incorrect.  But, I'm thinking of having a number of pages here with actual data on it.  The Russian gun pages have all been taken over.  Check the last page.

Nov. 26, 2018
I can confirm that the Soviet firing tables of their AP shells were in error in WWII.  See last page for update.
NaaB is updated once again.   This time elevation angles were added to the output.

Nov. 12, 2018
There was a bug in NAAB that didn't re-initialize the shell factors after the first run.  Fixed.  Also, added a selection to display penetration in mm.  This changed the Armor and Gunnery analysis page.

Nov. 8, 2018
I added examples of WWII Russian tank guns.  Also I modified NAAB to change shell quality in case users on't agree with the default values.

Nov. 6, 2018
The Armor and Gunnery at the Copyright office appears to be real.  It is different than either o my copies and I can't explain why.  I added another page for it. 

Nov. 5, 2018
There was a bug in applying the drag coefficient in NaaB.   That has been fixed.
Also, noticed that both the Wikipedia and War Thunder is now posting penetration numbers for the 100mm BR-412/BR-412B and 122mm BR-471/BR-471 which are way out of the norm.   They say that the numbers represent US penetration standards.   But, I have never found US firing tables for these guns.  None that are from testing.  Several people have made them from calculations but they aren't true tested values.
Wiki 100mm
War ThunderWiki 122mm

Sept. 23, 2018
Rifle ballistics.  I'm taking on rifle ballistics for the German K98k and Russian Mosin-Nagant.
While this has little practical application for Panzer War as the table gets fiddlely at that scale it does work for Panzer Command.  As the bullets are used in the light squad machineguns this works for them as well. 


Sept. 3, 2018
Calculations on optics of sights.  Why did the British evaluation of light transmission of German TF-5b sight so much less than their evaluation of the Russian TMFD sight?

June 17, 2018
Wiki is wrong.  OK, yeah it often is.  But  US 76mm M1, M1A1, and M1A1C had 40:1 rifling twist. Only the M1A2 had the 32:1 twist.   3" M5 and M7 also retained the 40:1 twist. 

Updated the bomb table of NAAB2.1 with modern bomb GBU-39.

May 26, 2018
The NAAB2.1 program is changed slightly again.    I received an note from Nathan Okun saying that the elongation scaling should be limited to 18".   So this has been done.  There was another change made as HCWCLCR is updated to HCWCLCR5. Download NAAB 2.1 with bombing here

May 10, 2018
The NAAB2.1 program is changed slightly.   The diameter scaling is cut off at 20" right now.  One other idea may be have max scaling linked to elongation.