Quote:
as long as we don't know the max. speed with the different settings, it's pointless to discuss the power settings.
Without the speed data we can always argue that the flank setting/speed is always safe.
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Iīm sorry, but I canīt follow. As we donīt have a gear box, speed is constantly depending on turning rounds (leaving slippage constant). If we have the turning rounds, we have have the corresponding speed. Just tested it:
Type IXC, GWX 3.0 Single mission, normal weather conditions
load_______rpm_____ speed ___ratio _______engine properties______ratio
_________________________rpm/rpm_max ____(uboat9c.cfg) ___ rpm/speed
slow______ 150 ______ 5 _____ 0,3 _________ 0,28 ________________30
onethird___ 290 ______10 _____0,58 ________ 0,57 ________________29
standard___400 _______14 _____0,8 __________0,8 _______________ 29
full________470 _____~16-17 __0,94________ 0,94_______________ 28,5
flank_____ ~500_____ ~17-18 ___1___________ 1_________________ 28,5
Result:
1. ~ 29 rpm correspond to 1 knot (correspondence confirmed with another test)
2. engine properties within uboatxx.cfg correspond to rpm and thus to speed
According to the increase shown in the former real u-boat data chart (remember 470 rpm max, 480 rpm 2hrs, 490 rpm 1/2 hr) the corresponding engine properties are 1,02 resp. 1,03. which is an acceleration of
only 0.3 to 0.5 knots #
Furthermore i fear that your suggestion of adjusting some percentage wonīt work, because the charging parameter "Speedboost", found in basic.cfg should work for all load steps, not only for flank (like a supercharger does in real life!) Please be aware that load and speed are different form each other.
h.sie
To answer your meantime post: Adjusting speed is also possible via uboatxx.sim. via eng_speed AND eng_power!
(But I have some testing charts from long ago in mind, where fuel consumption was measured, dependant on if a supercharger was used or not. In the case of used supercharger, top speed also arised, IIRC. was that wrong?)
Next test: backstandard=1.03 Result: ~18kn. So it works, but side effect: Wrong indicator position. Not good.
Again LGN1
Possibly the best idea! Take my parameter for choosing the correct overload speed, and maybe we got it!