pub const FLETCHER_AERODYNAMIC_CENTER: [(f64, f64); 5];Expand description
Fletcher’s measured aerodynamic center of five annular airfoils, (A, x_ac/c): the aspect
ratio A = d/c (diameter over chord) and the aerodynamic center’s distance aft of the leading
edge as a fraction of the chord, from α = 0° to 10° at Mach 0.13 (NACA TN 4117, 1957, Fig. 8,
p. 16). Read from the chart, two independent readings within 0.003 of the chord, and checked against
the text: the center moves aft as A rises, and sits ahead of the leading edge at A = 1/3
(p. 4).