Low-speed characteristics of four cambered, 10-percent-thick NACA airfoil sections

A two-dimensional low-speed investigation was made of four thin, cambered airfoil sections. The airfoil sections were the NACA 64A310, a = 1.0; the 64A810, a = 0.8 (modified); and the NACA 0010 cambered to the same two mean lines. The data, obtained for Reynolds numbers of 3.7 X 10(exp 6) and 5.2 x 10(exp 6), include measurements of lift, drag, pitching moment, and chordwise distribution of pressure. The effect of surface roughness was investigated as well as the effect of a split flap deflected 60 deg.