Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-a18sm-il-200000 Airfoil,a18sm-il Reynolds number,200000 Ncrit,9 Mach,0 Max Cl/Cd,87.0018 Max Cl/Cd alpha,4.25 Url,http://airfoiltools.com/polar/csv?polar=xf-a18sm-il-200000 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -7.750,-0.3979,0.09146,0.08795,-0.0275,1.0000,0.0488 -7.500,-0.4073,0.08940,0.08597,-0.0265,1.0000,0.0501 -7.250,-0.4148,0.08670,0.08336,-0.0308,1.0000,0.0519 -7.000,-0.4124,0.08293,0.07962,-0.0377,1.0000,0.0525 -6.750,-0.4046,0.07861,0.07530,-0.0425,1.0000,0.0527 -6.500,-0.4093,0.07367,0.07043,-0.0398,1.0000,0.0537 -6.250,-0.4054,0.07164,0.06842,-0.0366,1.0000,0.0547 -6.000,-0.3993,0.07008,0.06688,-0.0343,1.0000,0.0569 -5.750,-0.3886,0.06703,0.06383,-0.0364,1.0000,0.0604 -5.500,-0.3513,0.05618,0.05272,-0.0554,1.0000,0.0664 -5.250,-0.3421,0.05417,0.05075,-0.0534,1.0000,0.0675 -5.000,-0.2911,0.03844,0.03427,-0.0700,1.0000,0.0545 -4.750,-0.2785,0.03922,0.03523,-0.0673,1.0000,0.0576 -4.500,-0.1963,0.02086,0.01426,-0.0835,1.0000,0.0423 -4.250,-0.1698,0.02006,0.01339,-0.0839,1.0000,0.0468 -4.000,-0.1391,0.01877,0.01174,-0.0846,1.0000,0.0506 -3.750,-0.1086,0.01755,0.01031,-0.0855,1.0000,0.0562 -3.500,-0.0816,0.01709,0.00974,-0.0856,1.0000,0.0628 -3.250,-0.0410,0.01621,0.00877,-0.0883,0.9975,0.0729 -3.000,0.0005,0.01560,0.00812,-0.0913,0.9950,0.0870 -2.750,0.0406,0.01517,0.00763,-0.0939,0.9912,0.1064 -2.500,0.0811,0.01473,0.00728,-0.0968,0.9873,0.1305 -2.250,0.1233,0.01442,0.00702,-0.1000,0.9842,0.1595 -2.000,0.1612,0.01412,0.00679,-0.1023,0.9785,0.1891 -1.750,0.2016,0.01379,0.00658,-0.1051,0.9740,0.2229 -1.500,0.2446,0.01346,0.00639,-0.1084,0.9707,0.2657 -1.250,0.2795,0.01313,0.00626,-0.1100,0.9631,0.3143 -1.000,0.3212,0.01271,0.00610,-0.1131,0.9590,0.3851 -0.750,0.3591,0.01223,0.00598,-0.1152,0.9533,0.4824 -0.500,0.3931,0.01122,0.00589,-0.1163,0.9482,0.7446 -0.250,0.4331,0.01063,0.00548,-0.1181,0.9438,1.0000 0.000,0.4666,0.01052,0.00528,-0.1191,0.9344,1.0000 0.250,0.5069,0.01030,0.00499,-0.1213,0.9295,1.0000 0.500,0.5381,0.01019,0.00483,-0.1217,0.9188,1.0000 0.750,0.5703,0.01006,0.00467,-0.1222,0.9088,1.0000 1.000,0.6034,0.00990,0.00447,-0.1228,0.8995,1.0000 1.250,0.6338,0.00979,0.00433,-0.1229,0.8880,1.0000 1.500,0.6625,0.00974,0.00427,-0.1226,0.8746,1.0000 1.750,0.6908,0.00971,0.00421,-0.1222,0.8606,1.0000 2.000,0.7188,0.00971,0.00418,-0.1218,0.8458,1.0000 2.250,0.7452,0.00971,0.00415,-0.1209,0.8258,1.0000 2.500,0.7715,0.00970,0.00406,-0.1198,0.8025,1.0000 2.750,0.7970,0.00978,0.00408,-0.1188,0.7774,1.0000 3.000,0.8235,0.00992,0.00417,-0.1181,0.7565,1.0000 3.250,0.8498,0.01008,0.00429,-0.1175,0.7355,1.0000 3.500,0.8760,0.01027,0.00446,-0.1168,0.7143,1.0000 3.750,0.9018,0.01047,0.00462,-0.1161,0.6913,1.0000 4.000,0.9272,0.01069,0.00481,-0.1152,0.6658,1.0000 4.250,0.9518,0.01094,0.00498,-0.1142,0.6356,1.0000 4.500,0.9758,0.01123,0.00520,-0.1131,0.6002,1.0000 4.750,0.9992,0.01158,0.00544,-0.1120,0.5607,1.0000 5.000,1.0218,0.01199,0.00572,-0.1107,0.5120,1.0000 5.250,1.0423,0.01258,0.00605,-0.1092,0.4438,1.0000 5.500,1.0583,0.01367,0.00656,-0.1071,0.3255,1.0000 5.750,1.0720,0.01527,0.00748,-0.1050,0.2079,1.0000 6.000,1.0874,0.01683,0.00849,-0.1033,0.1229,1.0000 6.250,1.1029,0.01845,0.00972,-0.1012,0.0726,1.0000 6.500,1.1202,0.01978,0.01099,-0.0994,0.0562,1.0000 6.750,1.1381,0.02102,0.01224,-0.0976,0.0480,1.0000 7.000,1.1550,0.02250,0.01379,-0.0955,0.0436,1.0000 7.250,1.1742,0.02369,0.01507,-0.0939,0.0396,1.0000 7.500,1.1902,0.02588,0.01722,-0.0921,0.0356,1.0000 7.750,1.2119,0.02730,0.01879,-0.0908,0.0340,1.0000 8.000,1.2342,0.02901,0.02067,-0.0896,0.0325,1.0000 8.250,1.2567,0.03103,0.02289,-0.0885,0.0313,1.0000 8.500,1.2783,0.03319,0.02526,-0.0873,0.0301,1.0000 8.750,1.2972,0.03493,0.02716,-0.0861,0.0283,1.0000 9.000,1.3149,0.03804,0.03042,-0.0849,0.0268,1.0000 9.250,1.3292,0.04215,0.03492,-0.0830,0.0265,1.0000 9.500,1.3394,0.04599,0.03916,-0.0806,0.0264,1.0000 9.750,1.3475,0.04922,0.04277,-0.0778,0.0266,1.0000 10.000,1.3524,0.05214,0.04614,-0.0744,0.0273,1.0000 10.250,1.3163,0.06149,0.05662,-0.0665,0.0321,1.0000 10.500,1.3004,0.06656,0.06196,-0.0626,0.0335,1.0000 10.750,1.1898,0.05940,0.05509,-0.0452,0.0317,1.0000 11.000,1.1626,0.06397,0.05987,-0.0418,0.0322,1.0000 11.250,1.1345,0.06886,0.06495,-0.0396,0.0325,1.0000 11.500,1.1056,0.07415,0.07041,-0.0384,0.0328,1.0000 11.750,1.0759,0.07986,0.07629,-0.0385,0.0329,1.0000 12.000,1.0451,0.08606,0.08265,-0.0397,0.0330,1.0000 12.250,1.0131,0.09283,0.08956,-0.0421,0.0330,1.0000 12.500,0.9794,0.10026,0.09710,-0.0457,0.0331,1.0000 12.750,0.9429,0.10831,0.10525,-0.0503,0.0333,1.0000