THE object of this paper is to put forward a family of aerofoil profiles which is sufficiently comprehensive to meet all practical requirements and which has the merit that the ordinates of the profiles can be very easily calculated. The profiles are not of the kind for which the irrotational flow patterns can be derived with special ease, but this is not considered to be a real disadvantage.
Duncan, W.J. (1939), "Aerofoils with Many Parameters: A Family of Easily Calculable Sections Sufficiently Comprehensive for Most Practical Requirements", Aircraft Engineering and Aerospace Technology, Vol. 11 No. 10, pp. 383-385. https://doi.org/10.1108/eb030554
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