Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-naca0018-il-200000 Airfoil,naca0018-il Reynolds number,200000 Ncrit,9 Mach,0 Max Cl/Cd,50.0547 Max Cl/Cd alpha,7 Url,http://airfoiltools.com/polar/csv?polar=xf-naca0018-il-200000 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -18.750,-1.1121,0.09926,0.09376,-0.0363,1.0000,0.0684 -18.500,-1.1463,0.09060,0.08484,-0.0410,1.0000,0.0687 -18.250,-1.1706,0.08389,0.07788,-0.0442,1.0000,0.0692 -18.000,-1.1908,0.07804,0.07180,-0.0468,1.0000,0.0698 -17.750,-1.2090,0.07277,0.06629,-0.0488,1.0000,0.0704 -17.500,-1.2255,0.06800,0.06126,-0.0504,1.0000,0.0710 -17.250,-1.2271,0.06487,0.05801,-0.0508,1.0000,0.0718 -17.000,-1.2116,0.06364,0.05686,-0.0504,1.0000,0.0730 -16.750,-1.2055,0.06154,0.05473,-0.0505,1.0000,0.0740 -16.500,-1.2036,0.05902,0.05212,-0.0507,1.0000,0.0752 -16.250,-1.2041,0.05630,0.04927,-0.0509,1.0000,0.0763 -16.000,-1.2068,0.05348,0.04627,-0.0510,1.0000,0.0775 -15.750,-1.2110,0.05068,0.04324,-0.0510,1.0000,0.0787 -15.500,-1.1967,0.04925,0.04188,-0.0504,1.0000,0.0804 -15.250,-1.1863,0.04774,0.04040,-0.0501,1.0000,0.0820 -15.000,-1.1804,0.04590,0.03849,-0.0497,1.0000,0.0838 -14.750,-1.1767,0.04390,0.03636,-0.0492,1.0000,0.0856 -14.500,-1.1754,0.04182,0.03407,-0.0485,1.0000,0.0873 -14.250,-1.1587,0.04065,0.03304,-0.0478,1.0000,0.0896 -14.000,-1.1497,0.03920,0.03159,-0.0471,1.0000,0.0919 -13.750,-1.1432,0.03762,0.02989,-0.0462,1.0000,0.0945 -13.500,-1.1351,0.03609,0.02828,-0.0452,1.0000,0.0972 -13.250,-1.1244,0.03482,0.02708,-0.0442,1.0000,0.1001 -13.000,-1.1158,0.03354,0.02575,-0.0431,1.0000,0.1033 -12.750,-1.1083,0.03224,0.02430,-0.0417,1.0000,0.1066 -12.500,-1.0966,0.03106,0.02323,-0.0405,1.0000,0.1100 -12.250,-1.0870,0.02999,0.02212,-0.0391,1.0000,0.1138 -12.000,-1.0774,0.02893,0.02097,-0.0374,1.0000,0.1179 -11.750,-1.0674,0.02790,0.02002,-0.0358,1.0000,0.1219 -11.500,-1.0578,0.02705,0.01911,-0.0338,1.0000,0.1266 -11.250,-1.0479,0.02612,0.01820,-0.0318,1.0000,0.1312 -11.000,-1.0392,0.02535,0.01745,-0.0294,1.0000,0.1359 -10.750,-1.0307,0.02474,0.01673,-0.0268,1.0000,0.1411 -10.500,-1.0240,0.02395,0.01606,-0.0238,1.0000,0.1460 -10.250,-1.0194,0.02345,0.01553,-0.0201,1.0000,0.1513 -10.000,-1.0163,0.02292,0.01500,-0.0161,1.0000,0.1565 -9.750,-1.0147,0.02244,0.01458,-0.0117,1.0000,0.1616 -9.500,-1.0085,0.02207,0.01413,-0.0081,1.0000,0.1680 -9.250,-1.0038,0.02150,0.01368,-0.0042,1.0000,0.1740 -9.000,-0.9968,0.02115,0.01329,-0.0007,1.0000,0.1812 -8.750,-0.9903,0.02066,0.01287,0.0028,1.0000,0.1882 -8.500,-0.9818,0.02033,0.01252,0.0061,1.0000,0.1964 -8.250,-0.9735,0.01989,0.01215,0.0093,1.0000,0.2044 -8.000,-0.9628,0.01961,0.01183,0.0122,1.0000,0.2137 -7.750,-0.9529,0.01919,0.01152,0.0151,1.0000,0.2227 -7.500,-0.9405,0.01892,0.01122,0.0175,1.0000,0.2330 -7.250,-0.9285,0.01858,0.01097,0.0200,1.0000,0.2432 -7.000,-0.9152,0.01829,0.01072,0.0223,1.0000,0.2539 -6.750,-0.8833,0.01800,0.01045,0.0209,0.9967,0.2687 -6.500,-0.8419,0.01772,0.01022,0.0177,0.9922,0.2857 -6.250,-0.8043,0.01741,0.00995,0.0153,0.9859,0.3025 -6.000,-0.7628,0.01712,0.00972,0.0122,0.9809,0.3201 -5.750,-0.7264,0.01679,0.00949,0.0102,0.9740,0.3369 -5.500,-0.6860,0.01649,0.00927,0.0074,0.9683,0.3546 -5.250,-0.6474,0.01620,0.00906,0.0051,0.9623,0.3720 -5.000,-0.6102,0.01591,0.00884,0.0031,0.9550,0.3894 -4.750,-0.5660,0.01560,0.00860,-0.0003,0.9510,0.4083 -4.500,-0.5334,0.01533,0.00840,-0.0012,0.9419,0.4250 -4.250,-0.4908,0.01501,0.00815,-0.0041,0.9368,0.4437 -4.000,-0.4473,0.01468,0.00789,-0.0071,0.9331,0.4625 -3.750,-0.4199,0.01443,0.00769,-0.0068,0.9214,0.4788 -3.500,-0.3809,0.01410,0.00741,-0.0087,0.9161,0.4970 -3.250,-0.3544,0.01388,0.00722,-0.0081,0.9039,0.5133 -3.000,-0.3191,0.01354,0.00696,-0.0090,0.8971,0.5301 -2.750,-0.2940,0.01331,0.00682,-0.0080,0.8836,0.5454 -2.500,-0.2650,0.01307,0.00661,-0.0078,0.8729,0.5617 -2.250,-0.2373,0.01285,0.00641,-0.0072,0.8606,0.5782 -2.000,-0.2116,0.01269,0.00627,-0.0063,0.8466,0.5951 -1.750,-0.1839,0.01250,0.00613,-0.0057,0.8340,0.6111 -1.500,-0.1571,0.01234,0.00600,-0.0049,0.8199,0.6271 -1.250,-0.1314,0.01222,0.00593,-0.0040,0.8042,0.6432 -1.000,-0.1052,0.01213,0.00584,-0.0032,0.7892,0.6599 -0.750,-0.0787,0.01206,0.00574,-0.0025,0.7744,0.6770 -0.500,-0.0522,0.01200,0.00569,-0.0017,0.7586,0.6934 -0.250,-0.0262,0.01197,0.00570,-0.0008,0.7418,0.7092 0.000,0.0000,0.01195,0.00570,0.0000,0.7254,0.7254 0.250,0.0262,0.01197,0.00570,0.0008,0.7092,0.7418 0.500,0.0522,0.01200,0.00569,0.0017,0.6934,0.7587 0.750,0.0787,0.01206,0.00574,0.0025,0.6770,0.7744 1.000,0.1052,0.01213,0.00584,0.0032,0.6599,0.7892 1.250,0.1315,0.01222,0.00593,0.0040,0.6432,0.8042 1.500,0.1571,0.01234,0.00601,0.0049,0.6271,0.8199 1.750,0.1839,0.01250,0.00613,0.0057,0.6111,0.8340 2.000,0.2116,0.01269,0.00627,0.0063,0.5951,0.8466 2.250,0.2373,0.01285,0.00641,0.0072,0.5782,0.8606 2.500,0.2650,0.01307,0.00661,0.0078,0.5617,0.8729 2.750,0.2940,0.01331,0.00682,0.0080,0.5454,0.8836 3.000,0.3191,0.01354,0.00696,0.0090,0.5301,0.8971 3.250,0.3543,0.01388,0.00722,0.0081,0.5133,0.9039 3.500,0.3809,0.01410,0.00740,0.0087,0.4970,0.9161 3.750,0.4199,0.01443,0.00769,0.0068,0.4788,0.9215 4.000,0.4473,0.01468,0.00789,0.0071,0.4625,0.9331 4.250,0.4908,0.01501,0.00815,0.0041,0.4437,0.9368 4.500,0.5334,0.01533,0.00840,0.0012,0.4250,0.9419 4.750,0.5661,0.01560,0.00860,0.0003,0.4083,0.9510 5.000,0.6102,0.01590,0.00883,-0.0031,0.3894,0.9550 5.250,0.6473,0.01620,0.00905,-0.0050,0.3721,0.9624 5.500,0.6861,0.01649,0.00926,-0.0074,0.3546,0.9683 5.750,0.7264,0.01679,0.00949,-0.0102,0.3369,0.9741 6.000,0.7629,0.01711,0.00972,-0.0122,0.3201,0.9809 6.250,0.8044,0.01740,0.00994,-0.0154,0.3025,0.9860 6.500,0.8421,0.01771,0.01021,-0.0177,0.2857,0.9923 6.750,0.8834,0.01799,0.01044,-0.0209,0.2687,0.9968 7.000,0.9150,0.01828,0.01071,-0.0222,0.2539,1.0000 7.250,0.9283,0.01858,0.01096,-0.0200,0.2432,1.0000 7.500,0.9403,0.01891,0.01121,-0.0175,0.2330,1.0000 7.750,0.9527,0.01918,0.01151,-0.0150,0.2227,1.0000 8.000,0.9627,0.01960,0.01182,-0.0122,0.2138,1.0000 8.250,0.9733,0.01988,0.01214,-0.0093,0.2044,1.0000 8.500,0.9817,0.02032,0.01252,-0.0061,0.1964,1.0000 8.750,0.9902,0.02066,0.01287,-0.0028,0.1882,1.0000 9.000,0.9968,0.02114,0.01328,0.0007,0.1812,1.0000 9.250,1.0038,0.02150,0.01367,0.0043,0.1740,1.0000 9.500,1.0085,0.02207,0.01412,0.0081,0.1680,1.0000 9.750,1.0148,0.02243,0.01457,0.0117,0.1616,1.0000 10.000,1.0166,0.02292,0.01499,0.0160,0.1564,1.0000 10.250,1.0197,0.02344,0.01552,0.0201,0.1513,1.0000 10.500,1.0244,0.02394,0.01605,0.0237,0.1460,1.0000 10.750,1.0311,0.02474,0.01672,0.0267,0.1411,1.0000 11.000,1.0397,0.02535,0.01745,0.0293,0.1359,1.0000 11.250,1.0485,0.02611,0.01819,0.0317,0.1312,1.0000 11.500,1.0585,0.02704,0.01910,0.0337,0.1265,1.0000 11.750,1.0681,0.02789,0.02001,0.0356,0.1218,1.0000 12.000,1.0782,0.02892,0.02096,0.0373,0.1178,1.0000 12.250,1.0880,0.02998,0.02211,0.0389,0.1137,1.0000 12.500,1.0976,0.03105,0.02322,0.0404,0.1100,1.0000 12.750,1.1096,0.03224,0.02429,0.0416,0.1065,1.0000 13.000,1.1170,0.03353,0.02574,0.0429,0.1032,1.0000 13.250,1.1257,0.03480,0.02706,0.0440,0.1000,1.0000 13.500,1.1366,0.03607,0.02825,0.0450,0.0972,1.0000 13.750,1.1444,0.03761,0.02988,0.0460,0.0944,1.0000 14.000,1.1511,0.03918,0.03156,0.0469,0.0919,1.0000 14.250,1.1603,0.04063,0.03301,0.0476,0.0896,1.0000 14.500,1.1775,0.04179,0.03403,0.0482,0.0872,1.0000 14.750,1.1782,0.04389,0.03635,0.0489,0.0856,1.0000 15.000,1.1821,0.04588,0.03847,0.0494,0.0837,1.0000 15.250,1.1883,0.04770,0.04036,0.0498,0.0820,1.0000 15.500,1.1990,0.04919,0.04181,0.0502,0.0803,1.0000 15.750,1.2126,0.05068,0.04325,0.0507,0.0786,1.0000 16.000,1.2087,0.05347,0.04626,0.0508,0.0775,1.0000 16.250,1.2061,0.05629,0.04926,0.0506,0.0762,1.0000 16.500,1.2058,0.05898,0.05208,0.0504,0.0751,1.0000 16.750,1.2080,0.06147,0.05466,0.0502,0.0740,1.0000 17.000,1.2147,0.06353,0.05673,0.0501,0.0729,1.0000 17.250,1.2311,0.06470,0.05782,0.0506,0.0717,1.0000 17.500,1.2272,0.06805,0.06131,0.0501,0.0709,1.0000 17.750,1.2108,0.07283,0.06634,0.0485,0.0704,1.0000 18.000,1.1929,0.07807,0.07183,0.0464,0.0698,1.0000 18.250,1.1728,0.08392,0.07791,0.0438,0.0692,1.0000 18.500,1.1488,0.09060,0.08484,0.0406,0.0687,1.0000 18.750,1.1147,0.09924,0.09375,0.0359,0.0683,1.0000