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Old 06-28-15, 02:36 PM   #1
geosub1978
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To be honest, I still try to figure out the logic behind the "MAXIMUM" Deflection Angle. I believe that you have already understand that this graph represents the values of your BROKEN TDC METHOD charts for 46knotters.

Personally I believe that it has something to do with the turning rate of the target in the case of evading the torpedoes, or it gives somehow the maximum hit probability in the case of course/speed change or miscalculation which is also the case if the target is turning. The total target length has nothing to do, because this can be compensated by adjusting the SALVO SPREAD, which is based on the distance of the target, the Impact Angle, which defines the effective target length, the number of the desired hits and the desired overlapping.
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Old 06-28-15, 10:05 PM   #2
TorpX
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Quote:
Originally Posted by makman94 View Post
i see no logic behind all this , why on the max of deflection angle we have the best track angle ?

It isn't really a matter of it being the maximum deflection, per se, but rather the point where the slope is at a minimum. Since the curve is flat at that point, any inaccuracy in the target's course will produce only a slight error at the target. If you are shooting at a 20 kn. target, a Ta of 115° would be ideal (defection of 26°). An error of 5° would give an error of, perhaps ½° (going by the chart). If you want to make an attack with a smaller deflection angle, say for a Ta of 160° (deflection of 14°), it is certainly possible, but your estimate of the target's course better be good; an error of 5° in the Ta, will give an error of about 3½°, much greater than at a Ta of 115°.

To put it another way, as you get away from the optimum track angle, the deflection angle changes faster and faster, making a hit increasingly difficult.



Quote:
Originally Posted by geosub1978 View Post
To be honest, I still try to figure out the logic behind the "MAXIMUM" Deflection Angle.

Personally I believe that it has something to do with the turning rate of the target in the case of evading the torpedoes, or it gives somehow the maximum hit probability in the case of course/speed change or miscalculation which is also the case if the target is turning.
This is a common misunderstanding. We don't know what the target's turning abilities, or evasion abilities are. Calculations aimed at countering these would require specific data, and probably be very involved, as there are so many variables. The scope of the chart and data only encompasses errors in track angle or target's course. (There is a direct relationship between these.) Some writing favored 90° Ta's with the idea that the target must turn more to evade a torpedo, than with other angles. Doctrine wasn't the same everywhere, or at every time.


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Old 06-29-15, 04:35 AM   #3
makman94
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Quote:
Originally Posted by geosub1978 View Post
To be honest, I still try to figure out the logic behind the "MAXIMUM" Deflection Angle. I believe that you have already understand that this graph represents the values of your BROKEN TDC METHOD charts for 46knotters.
....
i see what you meant now Geosub,
i hadn't understand you and i thought that the point of the graphs was the optimum track angle. (the graph is marking as best track angle the angle that is giving the max deflection angle thats why i talked about the ''maximum'').



Quote:
Originally Posted by TorpX View Post
It isn't really a matter of it being the maximum deflection, per se, but rather the point where the slope is at a minimum. Since the curve is flat at that point, any inaccuracy in the target's course will produce only a slight error at the target. If you are shooting at a 20 kn. target, a Ta of 115° would be ideal (defection of 26°). An error of 5° would give an error of, perhaps ½° (going by the chart). If you want to make an attack with a smaller deflection angle, say for a Ta of 160° (deflection of 14°), it is certainly possible, but your estimate of the target's course better be good; an error of 5° in the Ta, will give an error of about 3½°, much greater than at a Ta of 115°.

To put it another way, as you get away from the optimum track angle, the deflection angle changes faster and faster, making a hit increasingly difficult.


hello TorpX ,

i see your point and i understand the logic of the graph,
thank you for your input
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Old 07-16-15, 10:49 PM   #4
Oby
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This looks great...

I'm gonna reinstall SH3...After eight years...I must find my DVD copy, or was it CD...

Great,great,great...
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