Hmm, I did a quick speed test with the Spitfire Vb at 20,100 feet per your listed source (
http://www.spitfireperformance.com/w3134.html ) and found my results to be very close to the data published there.
Aeroplane weight
lb. T.A.S.
m.p.h. Height ft. Climb
ft/min Height
feet Service
Ceiling ft.
W.3134 6525
371 20,100 3250 15,200 37,500
X.4922 6450 375 20,800 3140 14,400 37,700
K.9788 6170 369 19,600 3460 14,000 38,000
In the Full Mission Builder I created a simple mission with a Spitfire Vb spawning in at 20,100 feet (6126 meters), with a starting speed of 300 kmh IAS. The weight of the Spitfire Vb was set at 6,525 lbs (2,958 kg) per the tested weight of Spitfire W.3134.
My maximum speed attained at 20,100 feet was 243 mph IAS =
375 mph TAS according to the TAS Calculator at
http://www.indoavis.co.id/main/tas.html
My settings were: Throttle at 100% (= +4.2 lbs boost), Prop Pitch set to 76% ( = 2700 rpms), radiator closed to 50%, rudder and elevator trimmed. Engine temps were stable at these settings & speed at Oil = 91, Radiator Coolant = 119.
I recorded a quick video of this test here:
I did not have time for more thorough testing (which has been done to exhaustion prior to this sim's release). This quick test just reinforces that the flight models are pretty damned accurate, IMHO.
Give my best to Fatal and Flug, for me.
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