Analysis of real life 109E performance for CloD

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Originally Posted by CWMV

No no no no no!
Accuracy over all else. Arcade players be darned.

Well that's simple to say. But once the "rivet counters" (I seem to have become one lately ) have spent time analysing the historical record, then developed (valid) competing arguments which give a range of performance, what would you do? Pick your favorite rivet counter?

Originally Posted by 5./JG27.Farber

Given the keys to CloDo... was the question I was asked.

Well I would grant the reds the 100 octane performance data. I'd give the 109 the factory data. I would certainly adjust the roll rate of the padal winged spitfire.

Folklore and stuff in books by any pilot would be pretty much out of the window. Sorry Notafinger... However I would include the percularities of certain aircraft, like the 109's port wing stalls first near the stall etc.

As for random degress of performance in an aircraft, I'd say no...

I agree with you on speed (haven't looked at roll issues). Would you give the factory average spec for 109s (it is +/-5%) though? My analysis suggested that would be OK for 5000m but a bit optimistic for sea level (Not that you have to use that )

I would think that period pilot reports would rank higher than folklore but lower than flight tests when considering historical sources.

Originally Posted by 5./JG27.Farber

The table in the OP only includes TAS, ingame I only have IAS. How do i know if the 109 is fast enough at 5k? According to the graph released by B6 its too slow at around 5k by 30 or was it 50 kmh?

I calculate TAS as 2% greater than IAS per 1000ft altitude using this link (http://www.csgnetwork.com/tasinfocalc.html), there may be a more accurate calculation out there.

I just did some altitude speed tests offline (beta patch), they are OK for 109 but a bit horrifying for the RAF as they are below the B6 patch curves. I tested for full Throttle height (above which boost declines at full throttle). My assumption was that top TAS should be around FTH.

109E4 (prop pitch control on)

FTH: 5000m (boost has dropped a bit to 1.32ata, declines rapidly above 5000m)

425kmh IAS@5000m = 569kmh TAS, exactly right for Messerchmitt official average spec.

Spit Ia

FTH = 16500 ft
at 6.25psi, 2750rpm (rad open) engine fails after about 3 minutes. Just enough time to get stable 245mph IAS (with 3000rpm couldn't get this alt without engine death)

245mph IAS@16500ft = 323mph TAS = 520 kmh TAS

Oh dear, this is under even B6 plot speed (560kmh TAS at 16500ft).

Spit IIa

FTH = 13500 ft (?!)
at 6.25psi, 2750rpm (rad open) engine fails after about 3 mins

260mph IAS@13500 = 328mph TAS = 528 kmh TAS

I really hope I making some kind of testing error here. Tried online and got same values. I wouldn't feel confident taking any Spit against 109s at alt with these values.

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