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Old 07-10-13, 07:17 PM   #1
gap
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Thank you Fifi, my first remarks:

DIESEL

Forward:
  • Slow: speed 2% faster than espected, rpm 10% faster than espected
  • One third, Standard, Full, Flank: speed as espected or 1% lower, rpm 3 to 6% faster than espected

Backward:
  • Back Slow, Back Standard, Back Full: speed 8 to 10% faster than espected, rpm 12 to 14% faster than espected
  • Back emergency: speed 11% slower than espected, rpm 5% faster than espected

ELECTRIC

Forward:
  • Slow: speed 18% slower than espected, rpm 30% faster than espected
  • One third, Standard: speed 3 to 4% slower than espected, rpm 7 to 8% faster than espected
  • Full, Flank: speed 1% faster than espected, rpm 2 to 4% faster than espected

Backward:
  • Back Slow: speed 16% faster than espected, rpm 48% faster than espected
  • Back Standard: speed 6% faster than espected, rpm 17% faster than espected
  • Back Full: speed 14% faster than espected, rpm 13% faster than espected
  • Back emergency: speed 11% slower than espected, rpm 8% faster than espected

The main problem is not the discrepancy between espected and observed outputs, but the fact that rpm/speed deviations are dishomogeneous, i.e. apparently SH5 U-boat speed is not growing linearly with engine rpm, whereas data from our sources suggest a linear relation among them.

In other words, unless TDW manages to find the culprit in game code, we can either match speeds or rpm to historical values. It might seem a secondary problem, but if (as it was in RL) engine noise is related with rpm, we risk being hydro-detected at speeds that should be classified as "silent". On this subject, it is useful noting again that the most efficient silent speed was at 90 rpm.

I hope that plotting your data on a chart and comparing the resuting graph with the espected lines, will cast some light on the issue. I will post the chart as soon as possible
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Old 07-10-13, 09:03 PM   #2
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Quote:
Originally Posted by gap View Post
apparently SH5 U-boat speed is not growing linearly with engine rpm, whereas data from our sources suggest a linear relation among them.
Yes, quite strange and not very mechanical logical...

Quote:
Originally Posted by gap
In other words, unless TDW manages to find the culprit in game code, we can either match speeds or rpm to historical values
Is it possible to match historical RPM for electric ahead slow and backward slow (very needed for beeing silent - leaving aside the speed) while matching historical speeds for others knukles (leaving aside RPM this time - less important)?
Could be a soluce in the waiting of code braker
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Old 07-11-13, 03:02 AM   #3
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Quote:
Originally Posted by Fifi View Post
Yes, quite strange and not very mechanical logical...
Here is the graph that I was talking about yesterday:



Except for the fastest bell forward (flank speed) and, even more evident, for the fastest bell astern (back emergancy), the observed diesel curve is almost linear, though with a slightly steper gradient than espected. Not so for the electric curve, especially the backward part of it, which is much more irregular. We could blame its "bumpiness" to rpm measurement mistakes by you, but why only for the electric curve and not for the diesel one? Nah, there must be something else

In general, it looks like the game is trying to match the espected speeds as closely as possible, pulling rpm/speed coordinates from a second hardcoded curve...

Quote:
Originally Posted by Fifi View Post
Is it possible to match historical RPM for electric ahead slow and backward slow (very needed for beeing silent - leaving aside the speed) while matching historical speeds for others knukles (leaving aside RPM this time - less important)?
Could be a soluce in the waiting of code braker
It could be an idea, though I am not even sure how te game calculates hydrophone detection chances

At this stage, I would carry some more tests with different rpm, speed and ratio settings, and see if/how output curves are affected. What do you think?
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Old 07-11-13, 05:03 AM   #4
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I think it's still no perfect. We can try others values of course. I'm at your disposition
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Old 07-11-13, 07:04 AM   #5
Sjizzle
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Fifi what is that knob in your magui interface ? i didnt saw it till now

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Old 07-11-13, 03:11 PM   #6
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It's the button to take photos...
If you look closely, you can see a little camera drawn on it

PS: BTW, the stadimeter box would need to be placed few pixels lower...but still unable to find the value in the page cfg to do it.
I found for moving things horizontaly but not verticaly!
If someone could explain how the values works...
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Old 07-11-13, 03:17 PM   #7
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hmmm strange cos i can't see it .... i need to put my HD monitor from my kid to see if i have it
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Old 07-11-13, 03:34 PM   #8
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Quote:
Originally Posted by Fifi View Post
..PS: BTW, the stadimeter box would need to be placed few pixels lower...but still unable to find the value in the page cfg to do it.
I found for moving things horizontaly but not verticaly!
If someone could explain how the values works...
Have you tried to use Menu Editor?
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