Quote:
Originally Posted by derstosstrupp
Hi palmic,
You're right, the article doesn't expressly mention using 90 deg AOB for the Ausdampfverfahren method. It's really a matter of taste - you can either use the collision bearing as a proxy for AOB, which eliminates the need to compute "target speed" using sines (I.e. own speed x sin(target bearing)), or use 90 deg AOB, in which case the above formula would be necessary.
To answer your question about advantages: What may prove difficult with just using the bearing as AOB is the relative difficulty of entering the exact bearing into the AOB dial of the German TDC, as it only displays in 10s of degrees. 90 deg is easier to input exactly on the dial.
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You can use any AoB into TDC exactly, just set it to 90, lock and move periscope by (90 - your_wanted_AoB) degrees.
Its because of all triangle inner angles sums into 180.
So if you watch target moving 1 degree to the side, his AoB is changing also by 1 degree in virtual triangle solution.
