Hi again,
>Clmax table ("Assumed value of Clmax at full throttle"):
I've just re-read NACA report "Stalling Characteristics of the Supermarine Spitfire VA Airplane":
"The maximum lift coefficient reached in turns from level flight with flaps up was 1.22."
(From the graphs, I'd say the turns for this test were done at around 3 G.)
Maximum lift coefficients from the report (gun ports covered/open):
Flaps up, gear up, throttle closed: 1.12/1.15
Flaps up, gear up, 3 3/4 lbs/sq in, 2650 rpm: 1.63/1.58
So judging from these tests, it seems that the Clmax assumptions for the Spitfire I posted above are a bit too high actually.
From van Ishoven's "Me 109", there are figures for the Me 109 (at 5580 lbs) that indicate a 1 G Clmax of 1.38 with slats open, flaps up (unfortunately, no throttle setting is given) and a Clmax of 1.92 slats open, flaps down. The source of his figures is not entirely clear though - as everything is in Imperial units, I'd say it must be RAE tests.
The figures are highly interesting in showing a 20 mph mismatch between indicated and calibrated air speed at high angle of attack. While the stall speed actually was 95.5 mph, the airspeed indicator showed just 75 mph. This effect makes it difficult to get accurate Clmax data from manual figures.
Regards,
Henning (HoHun)