Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-sd8040-il-50000-n5 Airfoil,sd8040-il Reynolds number,50000 Ncrit,5 Mach,0 Max Cl/Cd,36.727 Max Cl/Cd alpha,6.25 Url,http://airfoiltools.com/polar/csv?polar=xf-sd8040-il-50000-n5 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -8.500,-0.4173,0.08724,0.08013,-0.0378,1.0000,0.0511 -8.250,-0.4181,0.08379,0.07677,-0.0385,1.0000,0.0506 -8.000,-0.4234,0.08012,0.07320,-0.0396,1.0000,0.0500 -7.750,-0.4287,0.07604,0.06920,-0.0416,1.0000,0.0494 -7.500,-0.4351,0.07179,0.06499,-0.0432,1.0000,0.0488 -7.250,-0.4419,0.06760,0.06080,-0.0442,1.0000,0.0482 -7.000,-0.4478,0.06346,0.05661,-0.0448,1.0000,0.0477 -6.750,-0.4523,0.05936,0.05239,-0.0451,1.0000,0.0475 -6.500,-0.4536,0.05541,0.04826,-0.0450,1.0000,0.0475 -6.250,-0.4515,0.05159,0.04418,-0.0448,1.0000,0.0479 -6.000,-0.4460,0.04785,0.04008,-0.0444,1.0000,0.0487 -5.750,-0.4369,0.04431,0.03612,-0.0439,1.0000,0.0494 -5.500,-0.4244,0.04099,0.03231,-0.0433,1.0000,0.0503 -5.250,-0.4090,0.03799,0.02879,-0.0425,1.0000,0.0509 -5.000,-0.3912,0.03531,0.02561,-0.0416,1.0000,0.0516 -4.750,-0.3730,0.03333,0.02345,-0.0408,1.0000,0.0528 -4.500,-0.3539,0.03179,0.02175,-0.0399,1.0000,0.0554 -4.250,-0.3334,0.03025,0.01989,-0.0389,1.0000,0.0591 -4.000,-0.3121,0.02871,0.01806,-0.0380,1.0000,0.0627 -3.750,-0.2915,0.02756,0.01684,-0.0370,1.0000,0.0666 -3.500,-0.2697,0.02649,0.01553,-0.0359,1.0000,0.0735 -3.250,-0.2453,0.02557,0.01460,-0.0357,0.9984,0.0821 -3.000,-0.2079,0.02460,0.01350,-0.0377,0.9911,0.0984 -2.750,-0.1700,0.02367,0.01264,-0.0400,0.9839,0.1259 -2.500,-0.1333,0.02265,0.01187,-0.0423,0.9757,0.1794 -2.250,-0.0978,0.02154,0.01139,-0.0445,0.9676,0.2948 -2.000,-0.0648,0.02050,0.01137,-0.0457,0.9596,0.5035 -1.750,-0.0419,0.01992,0.01151,-0.0434,0.9492,0.6982 -1.500,0.0060,0.01963,0.01148,-0.0450,0.9429,0.9159 -1.250,0.0601,0.01963,0.01109,-0.0504,0.9330,1.0000 -1.000,0.0968,0.01976,0.01090,-0.0525,0.9210,1.0000 -0.750,0.1364,0.01989,0.01075,-0.0550,0.9100,1.0000 -0.500,0.1766,0.01999,0.01060,-0.0574,0.8990,1.0000 -0.250,0.2100,0.02009,0.01051,-0.0585,0.8856,1.0000 0.000,0.2432,0.02017,0.01042,-0.0595,0.8724,1.0000 0.250,0.2770,0.02023,0.01033,-0.0604,0.8593,1.0000 0.500,0.3112,0.02024,0.01022,-0.0613,0.8464,1.0000 0.750,0.3456,0.02022,0.01008,-0.0621,0.8335,1.0000 1.000,0.3751,0.02024,0.01002,-0.0620,0.8184,1.0000 1.250,0.4046,0.02025,0.00995,-0.0618,0.8031,1.0000 1.500,0.4339,0.02025,0.00989,-0.0616,0.7875,1.0000 1.750,0.4630,0.02024,0.00982,-0.0612,0.7715,1.0000 2.000,0.4919,0.02023,0.00976,-0.0608,0.7550,1.0000 2.250,0.5207,0.02022,0.00970,-0.0602,0.7382,1.0000 2.500,0.5471,0.02029,0.00973,-0.0594,0.7194,1.0000 2.750,0.5736,0.02036,0.00977,-0.0586,0.7000,1.0000 3.000,0.6005,0.02043,0.00981,-0.0578,0.6805,1.0000 3.250,0.6278,0.02050,0.00983,-0.0569,0.6608,1.0000 3.500,0.6541,0.02063,0.00990,-0.0560,0.6402,1.0000 3.750,0.6790,0.02083,0.01010,-0.0550,0.6178,1.0000 4.000,0.7049,0.02102,0.01022,-0.0541,0.5963,1.0000 4.250,0.7294,0.02129,0.01046,-0.0531,0.5736,1.0000 4.500,0.7537,0.02159,0.01072,-0.0520,0.5507,1.0000 4.750,0.7780,0.02193,0.01101,-0.0510,0.5281,1.0000 5.000,0.8012,0.02233,0.01139,-0.0499,0.5046,1.0000 5.250,0.8250,0.02273,0.01171,-0.0489,0.4822,1.0000 5.500,0.8472,0.02322,0.01224,-0.0478,0.4586,1.0000 5.750,0.8700,0.02371,0.01267,-0.0467,0.4364,1.0000 6.000,0.8917,0.02428,0.01324,-0.0457,0.4137,1.0000 6.250,0.9134,0.02487,0.01381,-0.0446,0.3917,1.0000 6.500,0.9348,0.02550,0.01441,-0.0435,0.3707,1.0000 6.750,0.9553,0.02620,0.01515,-0.0423,0.3492,1.0000 7.000,0.9756,0.02693,0.01587,-0.0412,0.3290,1.0000 7.250,0.9956,0.02769,0.01662,-0.0400,0.3100,1.0000 7.500,1.0149,0.02853,0.01750,-0.0389,0.2910,1.0000 7.750,1.0336,0.02942,0.01844,-0.0377,0.2725,1.0000 8.000,1.0519,0.03035,0.01942,-0.0365,0.2554,1.0000 8.250,1.0694,0.03134,0.02046,-0.0352,0.2389,1.0000 8.500,1.0867,0.03239,0.02156,-0.0340,0.2236,1.0000 8.750,1.1028,0.03350,0.02272,-0.0326,0.2089,1.0000 9.000,1.1185,0.03469,0.02398,-0.0313,0.1953,1.0000 9.250,1.1331,0.03593,0.02530,-0.0299,0.1825,1.0000 9.500,1.1473,0.03722,0.02662,-0.0285,0.1710,1.0000 9.750,1.1600,0.03855,0.02800,-0.0270,0.1600,1.0000 10.000,1.1715,0.04012,0.02976,-0.0255,0.1495,1.0000 10.250,1.1819,0.04169,0.03145,-0.0239,0.1403,1.0000 10.500,1.1915,0.04318,0.03295,-0.0222,0.1323,1.0000 10.750,1.1975,0.04511,0.03513,-0.0204,0.1246,1.0000 11.000,1.2063,0.04667,0.03664,-0.0189,0.1182,1.0000 11.250,1.2086,0.04907,0.03937,-0.0171,0.1120,1.0000 11.500,1.2140,0.05097,0.04135,-0.0157,0.1066,1.0000 11.750,1.2155,0.05355,0.04414,-0.0144,0.1020,1.0000 12.000,1.2135,0.05644,0.04729,-0.0133,0.0978,1.0000 12.250,1.2171,0.05869,0.04958,-0.0124,0.0939,1.0000 12.500,1.2135,0.06196,0.05305,-0.0118,0.0908,1.0000 12.750,1.1995,0.06639,0.05783,-0.0118,0.0885,1.0000 13.000,1.1856,0.07112,0.06283,-0.0125,0.0866,1.0000 13.250,1.1709,0.07625,0.06818,-0.0139,0.0849,1.0000 13.500,1.1577,0.08143,0.07352,-0.0156,0.0833,1.0000 13.750,1.1637,0.08395,0.07600,-0.0157,0.0805,1.0000 14.000,1.1327,0.09251,0.08482,-0.0201,0.0804,1.0000 14.250,1.0962,0.10316,0.09568,-0.0264,0.0806,1.0000