Speed graphs for Spitfire and Hurricane

[Kwiatek]

Originally Posted by Kurfürst

It says there, right in the documents you have posted. Please translate, for all.

I translated there is not information about confirmed lower power output but only about correct mainfold pressure, temperature and not guarantee engine power - nothing more. No info about lower power output.

Originally Posted by Kurfürst

It says right there, Bodenlader, Hohenlader. MS gear, FS gear.

Exacly that why it looks that V15 prototype didnt used variable hydraulic supercharget but only 2 position one. With variable supercharger speed polars will be much more smooth.

Originally Posted by Kurfürst

Source please.

Please - Your own site:

http://kurfurst.org/Performance_test...w_109V15a.html

" It appears that variable-speed hydraulic supercharger control was either not present or not engaged in the tests (ie. testing seperately with both supercharger gears) : low-altitude and high-altitude supercharger speeds were engaged at a given boost pressure, therefore the curves do not show the characteristic shape of the DB power curve - this would result in a more smooth,curved transition and improved in performance between the supercharger`s two critical altitudes (ca between 2200 and 4800m) in level flight."

Originally Posted by Kurfürst

Here, again:

Again for prototype V15 and German prospect not FOR SERIAL PRODUCTION plane. Nothing knew. I would like to see such speeds for serial planes.

Originally Posted by Kurfürst

We have already discussed this. The tests you have posted are probably done in FS gear, which yields less performance than MS gear near SL.

Suorce? I dont see any information about these.

As we know serial production 109 E had variable hydraulic supercharger so how and for what would like to disable MS gear????

Maby Germans, Frenchs, Swiss and Americans made phone call and decided to blocked MS gear in their 109 for test?

Originally Posted by Kurfürst

We have discussed this. The Swiss trials, though no details are available, are comparing various propeller designs, and are again likely at FS gear.

Again totally bulshit for me and not confirmed anywhere.