N.A.C.A. CYH Airfoil Section [George J. Higgins: "THE N.A.C.A. CYH AIRFOIL SECTION", Technical Notes No. 240, Langley Memorial Aeronautical Laboratory, Washington, USA, June 1926] Radius of Leading Edge = 0.015 Sta. Upper Lower .000 .0350 .0350 .0125 .0545 .0193 .025 .0650 .0147 .050 .0790 .0093 .075 .0885 .0063 .10 .0960 .0042 .15 .10685 .0015 .20 .1136 .0003 .30 .1170 .0000 .40 .1140 .0000 .50 .10515 .0000 .60 .0915 .0000 .65 .0830 .0000 .70 .0741 .0006 .80 .0562 .0038 .90 .0384 .0102 .95 .0293 .0140 1.00 .0205 .0185