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Originally Posted by Kwiatek
Generally slats cause more drag and effect also higher energy bleeding but other hand allows to get higher angle of attack - good for deflection shoting.
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Slats do not cause more drag - higher angles of attack permitted by slats do.
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Spit other hand has elipitical wing desing which reduced induced drag which is important at slow speed and high angle of attack and with lower wings loading it casue less energy bleeding in turns then 109.
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1, The Spitfire doesn't have elliptical wings, from the aerodynamic POV. Otherwise stall would be awful - a true elliptical wing stall as a whole. That's why most planes have a washout/twist built in the wing to 'ruin' the even lift distribution and make the outer wing area stall later than the inner.
2, Lower induced drag on the Spit doesn't have anything to do with wing shape, its simple that its a huge wing, and needs less angle of attack to provide the same lift. Less angle of attack - less drag.