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A profile-drag investigation in flight on an experimental fighter-type airplane the North American XP-51

John A. Zalovcik

Abstract

Report discussing the results of an investigation of the North American XP-51 and its low-drag airfoils. Several surface conditions were tested and the profile-drag coefficients were determined. The surface that was smoothened and faired by filling and sanding had the lowest profile-drag coefficient.

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Key concepts: Drag, Airplane, Drag coefficient, Lift-induced drag, Airfoil, Zero-lift drag coefficient, Parasitic drag, Surface (topology)