SUBSIM Radio Room Forums - [rel] Firing Angle Tables

I noticed an interest recently on manual targeting, speed calculation etc. So I desided to descirbe you my attacking tactic (almost a WW1 era one!) giving you the FIRING ANGLE tables that I have produced, resolving that related mathematic formulas.

This is how it goes:

Once you have determined the speed of the target and the distance that you will fire, you have to determine the impact angle of the torpedo on the target. This will determine your Uboot’s coarse at the moment of firing. The impact angle when attacking an unescorted target is chosen usually 90degrees. If you maneuver submerged in the middle of a convoy then you may have to choose from 0 to anything degrees. Then you pick the firing angle from the tables (for 31 or 44 torpedo) and you shoot when the target is on that bearing.

Notices:

This simulates a TDC breakdown! You do everything manually.
It works believe me, I do it for 3 years now.
Set the gyro angle to 000O and auto TDC off!
If the target passes the fire bearing or you choose to shoot earlier you can compensate with equal gyro angle but only for gyro angles up to 20O. After that the impact angle changes much and the turning cycle of the torpedo upsets the values.
If the impact angle is more than 90O, the same values are used for degrees that summed give 180O. This is the meaning of the second value in impact angle table.
Example of determining the coarse of the submarine before firing see also picture:
- Target Coarse: 330O

- Desired Impact Angle: 60O

- Submarine Coarse Before Firing = Opposite of target coarse (300O-180O=120O) – Impact Angle (60O) = 60O. So submarine coarse =060O.

http://img354.imageshack.us/img354/968/90195646tl7.jpg

So I provide in FF the tables of FIRING ANGLES for 31 and 44 kts torpedoes, related to desired Impact Angle and Target Speed.

http://files.filefront.com/FIRING+ANGLE+TABLESrar/;12758448;/fileinfo.html

You can print them or someone can make them draggable in menu_ini file.

Hoping that there is someone interested…. enjoy it!