Originally posted by LLv34_Camouflage
Hmmm, I wonder if I made a mistake... Do you have LN2 there, can you check?
I checked allready when I said your measured speeds *generally* match. It looks like your 567km/h figure looks pretty good but I think top speed at 6km is more than 617km/h but still not as high as 639km/h. But as I said it's really hard to be sure since it's so small chart.
To add the confusion, LN2 list top speed being 636km/h (not 639km/h as "Finnish Aces of World War 2" lists) at 6km.
And another thing, while LN2 lists top sped being acchieved at 6km (636km/h). The chart clearly shows higher speed (little below 650km/h) at little over 6000m. Speed curve does so sharp turn (increase in speed) with very little altitude change here that I'm doubting it.
Originally posted by LLv34_Camouflage
LN2 said the tests were flown in March 1943 by Pekka Kokko. Looks like separate tests, then!
LN2 mentions only that the climb test was done in March. There is no mention about the speed test's date. Of course it's pretty safe to assume that climb test was done in a series of test flights which also included speed test.
With all of this in mind. It would be very interesting to see the orginal flight test documents. I wonder where they are today. Maybe in the Finnish war archives or perhaps in Finavitec's archives?
