For N-22, C-72, Boeing 106, and Goettingen 398 airfoils, negative maximum lift coefficients were found to be approximately half positive; but for M-6 and CYH, which have less effective camber, negative values were, respectively, 0.8 and 0.6 of positive values. (Supp.)
Aerodynamic characteristics of six commonly used airfoils over large range of positive and negative angles of attack
Nat. Advisory Committee Aeronautics -- Tech. Notes
1931
5 pages
6 Figs. on plates
Report
English
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Aerodynamic characteristics of airfoils at negative angles of attack
Engineering Index Backfile | 1932
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