Re; Max Rate of turn is largely a matter of wing loading. By that I mean how much square feet of wing is there to support the weight of the plane?
I am just looking at a calender here at the Boulder airport that gives both P-40 and Spitfire data, i don't have the Zero or 109 figures. It does not say which model P-40, but the Spit figures match a Mk IX.
P-40: 236 sq feet of wing, and 8850 lbs.,( max loaded weight)
Spitfire: 242 sq feet wing area, and 7767 lbs. ( msx loaded weight)
Just from these figures, with 6 sq ft less wing, and 1100 lbs heavier, it is obvious, that a P-40 is not going to outurn a Spitfire if both are at max turn possible.
Now,this is only one measure, but it does show that the P-40 is relatively heavy, not sure if it is the size in being slightly larger than a Spit, or if the Allison is heavier or what.
I don't have the same figures here for 109 or Hurri or Zero, but it is well known that with it's very light weight a Zero has a great turn rate, especially at speeds below 200 mph. At high speeds, over 300 mph, I think the Zero ailerons become less efffective and heavier.
I do know that my Spitfire, being a two seat Mk IX is about 7650 lbs with full internal fuel, plus a full60 gal U S belly tank, and pilots and parachutes in both seats, of course no ammo, is that much lighter than a P-40.
footnote, I looked up the Zero specs. As much wing area as a Spitfire. 242 feet and IT ONLY WEIGHS 5350 lbs gross, so it will climb, 3300 fpm, almost 50 % better than a P-40. I think it will also climb at a steep angle, despite having only 950 hp (I think later models had more), with ceiling of 33,000 feet. Max dive speed is listed as only 410 mph which seems awfully low.
This calender gives the ceiling as P-40 of 31,000 feet and Spit at 41,000 ( would be 43,000 with the high altitude engine, ie Model 76 vs 66.)
According to RAF test pilots one of the advantage a Spitfire has over a 109 is in a turning fight, the Spitfire is a little more efficent and does not bleed off speed as fast with the extra induced drag of a hard turn, and also can do more vertically from a slower speed than the 109. This might be the case with a P-40, just don't know, or how it compares to a Zero or 109.
Last edited by
Bill Greenwood on Tue Sep 28, 2010 10:16 pm, edited 2 times in total.