Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-a18-il-50000 Airfoil,a18-il Reynolds number,50000 Ncrit,9 Mach,0 Max Cl/Cd,43.9927 Max Cl/Cd alpha,5.25 Url,http://airfoiltools.com/polar/csv?polar=xf-a18-il-50000 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -9.500,-0.3172,0.10220,0.09553,-0.0249,1.0000,0.1971 -9.250,-0.3132,0.09842,0.09180,-0.0242,1.0000,0.2036 -9.000,-0.3191,0.09646,0.08992,-0.0239,1.0000,0.2120 -8.750,-0.3121,0.09236,0.08585,-0.0228,1.0000,0.2195 -8.500,-0.3236,0.09086,0.08447,-0.0222,1.0000,0.2269 -8.250,-0.3159,0.08659,0.08023,-0.0210,1.0000,0.2338 -8.000,-0.3296,0.08519,0.07897,-0.0195,1.0000,0.2411 -7.750,-0.3235,0.08118,0.07500,-0.0180,1.0000,0.2487 -7.500,-0.4116,0.09141,0.08489,-0.0209,1.0000,0.2429 -7.250,-0.4000,0.08715,0.08064,-0.0174,1.0000,0.2543 -7.000,-0.3951,0.08382,0.07737,-0.0164,1.0000,0.2636 -6.750,-0.3924,0.08102,0.07462,-0.0161,1.0000,0.2768 -6.500,-0.3883,0.07832,0.07198,-0.0151,1.0000,0.2948 -6.250,-0.3867,0.07624,0.06996,-0.0176,1.0000,0.3152 -6.000,-0.3798,0.07281,0.06654,-0.0142,1.0000,0.3319 -5.750,-0.3729,0.06986,0.06362,-0.0122,1.0000,0.3503 -5.500,-0.3673,0.06718,0.06098,-0.0115,1.0000,0.3756 -5.250,-0.3621,0.06447,0.05832,-0.0082,1.0000,0.4055 -5.000,-0.3568,0.06180,0.05568,-0.0050,1.0000,0.4364 -4.500,-0.1719,0.03986,0.03168,-0.0687,1.0000,0.2095 -4.250,-0.1231,0.03473,0.02556,-0.0762,1.0000,0.1985 -4.000,-0.0973,0.03293,0.02364,-0.0767,1.0000,0.2065 -3.750,-0.0621,0.03061,0.02073,-0.0792,1.0000,0.2117 -3.500,-0.0300,0.02871,0.01843,-0.0808,1.0000,0.2161 -3.250,-0.0006,0.02738,0.01681,-0.0815,1.0000,0.2250 -3.000,0.0284,0.02640,0.01554,-0.0822,1.0000,0.2421 -2.750,0.0576,0.02537,0.01439,-0.0828,1.0000,0.2585 -2.500,0.0859,0.02451,0.01352,-0.0831,1.0000,0.2808 -2.250,0.1133,0.02402,0.01310,-0.0832,1.0000,0.3212 -2.000,0.1426,0.02342,0.01252,-0.0835,1.0000,0.3867 -1.750,0.1719,0.02244,0.01205,-0.0838,1.0000,0.4909 -1.500,0.1950,0.02068,0.01163,-0.0819,1.0000,0.7351 -1.250,0.2070,0.02060,0.01129,-0.0799,1.0000,1.0000 -1.000,0.2317,0.02115,0.01146,-0.0803,1.0000,1.0000 -0.750,0.2549,0.02175,0.01179,-0.0804,1.0000,1.0000 -0.500,0.2771,0.02241,0.01226,-0.0806,1.0000,1.0000 -0.250,0.2988,0.02313,0.01285,-0.0807,1.0000,1.0000 0.000,0.3197,0.02393,0.01353,-0.0808,1.0000,1.0000 0.250,0.3401,0.02481,0.01432,-0.0810,1.0000,1.0000 0.500,0.3598,0.02576,0.01521,-0.0812,1.0000,1.0000 0.750,0.3789,0.02679,0.01620,-0.0814,1.0000,1.0000 1.000,0.3975,0.02790,0.01729,-0.0817,1.0000,1.0000 1.250,0.4312,0.02909,0.01847,-0.0848,0.9935,1.0000 1.500,0.4769,0.03021,0.01962,-0.0900,0.9788,1.0000 1.750,0.5207,0.03129,0.02075,-0.0946,0.9639,1.0000 2.000,0.5628,0.03231,0.02188,-0.0987,0.9489,1.0000 2.250,0.6029,0.03331,0.02298,-0.1023,0.9341,1.0000 2.500,0.6428,0.03424,0.02405,-0.1057,0.9188,1.0000 2.750,0.6944,0.03476,0.02479,-0.1103,0.9005,1.0000 3.000,0.7372,0.03487,0.02510,-0.1126,0.8753,1.0000 3.250,0.7899,0.03421,0.02471,-0.1152,0.8479,1.0000 3.500,0.8410,0.03343,0.02427,-0.1173,0.8249,1.0000 3.750,0.8877,0.03269,0.02388,-0.1186,0.8038,1.0000 4.000,0.9309,0.03172,0.02330,-0.1187,0.7811,1.0000 4.250,0.9806,0.02988,0.02186,-0.1184,0.7560,1.0000 4.500,1.0155,0.02848,0.02080,-0.1157,0.7213,1.0000 4.750,1.0535,0.02593,0.01850,-0.1112,0.6696,1.0000 5.000,1.0739,0.02466,0.01720,-0.1053,0.5965,1.0000 5.250,1.0853,0.02467,0.01680,-0.0991,0.4889,1.0000 5.500,1.0873,0.02616,0.01728,-0.0930,0.3576,1.0000 5.750,1.0872,0.02915,0.01900,-0.0883,0.2427,1.0000 6.000,1.1021,0.03323,0.02227,-0.0858,0.1642,1.0000 6.250,1.1282,0.03621,0.02509,-0.0846,0.1315,1.0000 6.500,1.1546,0.03886,0.02764,-0.0840,0.1140,1.0000 6.750,1.1837,0.04220,0.03137,-0.0832,0.1058,1.0000 7.000,1.2087,0.04561,0.03483,-0.0826,0.0990,1.0000 7.250,1.2257,0.04897,0.03887,-0.0805,0.0943,1.0000 7.500,1.2416,0.05288,0.04329,-0.0786,0.0921,1.0000 7.750,1.2520,0.05732,0.04829,-0.0762,0.0919,1.0000 8.000,1.2563,0.06213,0.05368,-0.0736,0.0928,1.0000 8.250,1.2553,0.06715,0.05922,-0.0708,0.0943,1.0000 8.500,1.2498,0.07221,0.06471,-0.0682,0.0957,1.0000 8.750,1.2419,0.07724,0.07007,-0.0657,0.0970,1.0000 9.000,1.2332,0.08232,0.07540,-0.0637,0.0982,1.0000 9.250,1.2265,0.08758,0.08087,-0.0621,0.0992,1.0000 9.500,1.1644,0.09253,0.08624,-0.0592,0.1038,1.0000 9.750,1.1246,0.09954,0.09341,-0.0610,0.1063,1.0000 10.000,1.0957,0.10759,0.10152,-0.0649,0.1090,1.0000 10.250,0.9240,0.10792,0.10207,-0.0523,0.1101,1.0000 10.500,0.9119,0.11446,0.10861,-0.0540,0.1121,1.0000