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Originally Posted by Hitman
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The parallax between the position of the torpedo tubes and the position of the periscope or TBT has nothing to do with the problems. That difference is automatically compensated for by the TDC. In fact, the distance between periscope and torpedo tubes, both fore and aft, were adjustable! Now why would that be? Well, fleet boat lengths varied from the 253' length of the Gar class to the 311' length of the Gato and Balao classes. The adjustable parallax parameter made the TDC equally deadly in each.
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But the TDC can't automatically compensate everything. True it will take into account one side of the triangle, which is known -distance from the optics to the torpedo tube- but it still will lack the variable of distance to target in order to set the proper correction for parallax. |
But the parallax between the position of the torpedo tube and the periscope isn't the whole picture. The real parallax is between the periscope and the end of the reach, plus at least part of the radius of the turn. The part caused by the reach of the torpedo is much greater than the separation between tube and periscope. Now we've lost everybody!:rotfl:
I guess what I'm trying to say is that if the torpedo took a straight line out of the tube to the target, it would be hitting targets at 3000 yards without range input. Since it runs straight out the front for the length of the reach (don't have the figure in front of me, but it's more than the length of the submarine) and then turns, the parallax is great enough to cause misses.
I'm still amazed that the devs worked all this out and built it into the simulator. Not many have noticed it or poked at it with a stick like I have. Seems like a lot of work to entertain Hitman and Rockin Robbins.:rotfl: