Spit/109 sea level speed comparisons in 1.08 beta patch

[Kurfürst]

Originally Posted by JtD

Regarding level speed performance of the 109, a question raised by I think MiG-3U puzzled me, maybe you have a good explanation, I'm at a loss for now: How come the 109E is faster than the 109F at less power, if you accept the 498 km/h for the 109E at 990ish hp from the V15 test and the 495 km/h for the 109F at 1065ish hp from the 109F Kennblatt?

Its difficult to say how much it is on the 109F Kennblatt because the Kennblatt's figures are with the original ratings of the 601N at 495/515 (1.42/1.3, which were reduced to 1.25). In short the 495ish figure is for 1.3ata.

My best guess is that there was a major difference between the Emil and Friedrich propellers (also according to the propeller effiency curves I have seen), the latter was of smaller diameter and almost certainly meant for high altitudes, and probably less efficient in denser air, hence the relative stagnation of speed near SL. The Friedrich would be probably faster with a different prop.

But all of this is not so extraordinary or a surprise since the same can be noted when it comes to the Mark I / Mark V / Mark IX Spitfires's evolution. Hell the Mark I. at +12 is supposedly faster at SL than the Mark IX at +15 boost, how come..?

[Osprey]

Originally Posted by Kurfürst

Here it is. It is as proper as a flight test can get. In fact, its the most detailed performance test I have seen so far. http://kurfurst.org/Performance_test...w_109V15a.html

Hmmm, this isn't an original document, it's some html from your website. All of the RAE stuff and other docs are originals (except the 12lbs which is measured in test then calculated/translated/projected onto the graph)

Originally Posted by Kurfürst

You see the problem with this kind of thought is that after Willie would have won that big fat order, he would also have to deliver some 4000 aircraft and each will be tested by the German Air Ministry for specs. If they are not capable being withing plus/minus five percent of the figures Willie promised, Willie won't get a single Pfenning, which doesn't sound like a very good deal.

Don't be silly Kurfurst. Willy is an old pal of Goering and a few keys of Colombian marching powder and some bonus wraps he'd have been on the hotline to Herr Hitler. We've all seen how Oscar Schindler did it.

[Kurfürst]

Originally Posted by Osprey

Hmmm, this isn't an original document, it's some html from your website. All of the RAE stuff and other docs are originals (except the 12lbs which is measured in test then calculated/translated/projected onto the graph)

You want the original document, Osprey?

Originally Posted by Osprey

Don't be silly Kurfurst. Willy is an old pal of Goering and a few keys of Colombian marching powder and some bonus wraps he'd have been on the hotline to Herr Hitler. We've all seen how Oscar Schindler did it.

Except it just didn't work that way. BAL (the Luftwaffe's QC group) was rejecting Me 262 if they did not do at least 830 kph.. They had a bit of reason and allowed planes even with 825, but no less was accepted.

Again. We are talking 262s. In 1945.

[5./JG27.Farber]

Originally Posted by Kurfürst

It seems to me that the Germans regarded the flying qualities of the Spitfire overall inferior to their fighters.

In 1940 I presume, not the enitre war? and when they say "inferior" you mean slightly worse by a small margin? Translation error? German translation can be very direct.