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#31
10-11-2011, 01:42 AM
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Max speed @ 0km - 460kph 1km - 480kph 2km - 500kph 3km - 520kph 4km - 540kph 5km - 555kph 6km - 555kph 7km - 550kph Now what were you saying about 50kph to slow? 
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#32
10-11-2011, 02:33 AM
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Wow, when I see these numbers and compare it to the ingame perfomance of all the planes, I ask myself why the developers haven´t implemented that kind of data to the planes of the game ?
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#33
10-11-2011, 05:24 AM
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Ive already posted it, but here goes again... http://www.kurfurst.org/Performance_...chreibung.html
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#34
10-11-2011, 05:37 AM
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http://www.airpages.ru/eng/lw/bf109e1.shtml http://www.aviation-history.com/mess...itt/bf109.html Last edited by Valec; 10-11-2011 at 06:07 AM.
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#35
10-11-2011, 05:38 AM
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CWM Yes but see if you can find another source for E models getting 500Kmh at sea level, that is imo an exceptional event. Just about every ref I have seen is in the 460Kmh or so sea level area.
Even here the Swiss tests show 460-470 at sea level: http://kurfurst.org/Performance_test...109E_J347.html And the French tests only get 500Kmh (clapped out E I can here some saying  at around 3000m, though the other numbers compare quiet well with the L.Dv.556/3 for the E-1, -3 stuff quoted in this thread.  This all becomes a circular tail chase depending on the references you choose and or trust. The majority are in the L.Dv.556/3 type performance area. Last edited by IvanK; 10-11-2011 at 06:03 AM.
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#36
10-11-2011, 06:04 AM
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perhaps we have to know if these speedtests were made with DB601A-1 or DB601Aa...and wich engines drives the CoD 109s
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#38
10-11-2011, 06:26 AM
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Indeed.
My only problem with the french numbers is that they had to run the low altitude tests with rads open due to cooling issues from not using the correct fluids. Especially when you look at the 5000M+ (Where the rads were closed) numbers that are well within 5% of the German numbers I posted. Do I think that the rads being full open could take 40kph off the top end-you bet! British tests with the same aircraft mirror those of the French, off the top of my head 16000ft was 355mph=571kph. So weve got an aircraft that performs the same as German tests when you close the rads, and then is slower when you open them..seems logical to me lol. And the Swiss tests were of an aircraft that had already gone through a third of its operational lifespan (if I recall 111 hours at test, retired at 350ish). In addition to this Kurfurst has summed up my thoughts on J-347 fairly well: "Comparison of the speed results with Bf 109E prototype V15a's test report show remarkable similarity in the top speed achieved at altitude with the original VDM propeller of J-347 (572 vs. 564 km/h at rated altitude), especially when taking into account that J-347 already saw considerably use. However the low level speeds diverge greatly (498 vs 464 km/h at 0m altitude). However the low-level performance of V15a with the Höhenlader (high altitude supercharger speed, or 'F.S gear' in British terms) shows good agreement with J-347 at both high- and low altitudes. This would suggest that J-347`s level speed results were achieved with the Höhenlader in operation, and the appropriate Bodenlader (low-altitude supercharger speeds, or 'M.S. gear' in British terms) was not used to record the results, therefore full performance of the aircraft was not reached below ca. 3500 meter altitude." Regardless, the numbers call for a +/- 5%, so really Id be happy with anything from 470-500. Ideally, to me anyway, 490 would be taken as a base, and a random power fluctuation within 5% would be applied to every 109, but I'm not sure the sim is there yet... And yes, we all have our favored sources, but at least in this thread they were posted, and we can argue about the numbers rather than what we think the aircraft should do. I suppose that's better...lol.
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#39
10-11-2011, 06:30 AM
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wondering about these supercharger comments having the DB601's automatic variable supercharger system in mind ?!
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#40
10-11-2011, 06:35 AM
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Some more data we must include the TSAGI stuff for balance
... though I think its a bit skewed to the slow side ... differrent time and place... got to make the local product look good perhaps  And another that looks good with all sorts of detail but no idea on its provenance so caution on its use. Looks like some engineers calculations and extrapolations rather than actual test data ... just another of the countless snippets on my HD 
Last edited by IvanK; 10-11-2011 at 06:47 AM.
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