(Yet another) Attempt to make sense of gyro angles

[makman94]

hello Von Due,

i think it is useless trying to find out great accuracy based on sh3's TDC for two reasons.

The first reason is that the game (and eventually TDC) is NOT getting the distance to target or bearing to target from the periscope (the one that player is using) but from the generic node of sub's 3d model. this ,practically, mean that for each sub model there will be different inaccuracies.
you can easily confirm that by looking at a stationary -close to you- target from periscope at a fixed bearing. not at bearing 0° but better,for example, to 270° and watch the bearing that TDC shows.you will need a mod for showing you the 10ths of degrees of bearing for that.then simply,without moving anything, press the lock button to lock the target on periscope and watch that the bearing on TDC is slightly changing and now the bearing on TDC is not exactly the same with the bearing you see on scope. (this is fixable.in my own sh3 set up , i have matched ,at the uboat i am using,all the scopes-uzo 3d nodes with the uboat's generic node for avoiding the above inaccuracies)

the second reason is that sh3 is coming from sh2 which is coming from sh1. sh1 is for american submarines and sh3 is for german submarines. The american submarines were using different Torpedo's Straight Run(SR) and Torpedo's Turn Radious(TR) values for the left or right shots (from this book:https://www.abebooks.com/97819353270...1935327070/plp i read that for right shots the values were SR=57.93yards TR=215yards and for left shots the values were SR=32.46yards TR=206yards). I am suspecting that the sh's devs didn't transform the equations (for torpedo aiming) right from sh1 to sh2 and finally to sh3. i am ,also, guessing that this is the reason for the inaccuracies you see at torpedo running times for shots like in the following image (the first reason is not responsible for that issue.this issue is a hardcode error):



the image shows the TDC solution at two symmetrical set ups.
at the left, you see that torpedo's run time is 1:13 and at the left you see that torpedo's run time is 1:06.
the two solutions have to be the same but they are not.

ps: propably i am off topic (haven't followed all the posts) but my point is that trying to get very accurate results(-conclusions) based on sh3's TDC is not a safe way.

Originally Posted by Von Due

...If anyone other than the Americans had position keeping capable TDC, then that would be interesting to know.

.....

Japan had one too