Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-naca644221-il-200000-n5 Airfoil,naca644221-il Reynolds number,200000 Ncrit,5 Mach,0 Max Cl/Cd,58.1022 Max Cl/Cd alpha,8 Url,http://airfoiltools.com/polar/csv?polar=xf-naca644221-il-200000-n5 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -19.750,-0.9404,0.10723,0.10142,-0.0425,1.0000,0.0318 -19.500,-0.9435,0.10308,0.09716,-0.0445,1.0000,0.0322 -19.250,-0.9451,0.09922,0.09317,-0.0464,1.0000,0.0325 -19.000,-0.9465,0.09547,0.08929,-0.0481,1.0000,0.0329 -18.750,-0.9467,0.09198,0.08566,-0.0496,1.0000,0.0333 -18.500,-0.9456,0.08870,0.08224,-0.0509,1.0000,0.0337 -18.250,-0.9433,0.08565,0.07907,-0.0521,1.0000,0.0341 -18.000,-0.9372,0.08329,0.07670,-0.0529,1.0000,0.0346 -17.750,-0.9318,0.08080,0.07419,-0.0538,1.0000,0.0351 -17.500,-0.9269,0.07825,0.07159,-0.0547,1.0000,0.0356 -17.250,-0.9212,0.07585,0.06913,-0.0554,1.0000,0.0361 -17.000,-0.9155,0.07343,0.06665,-0.0562,1.0000,0.0368 -16.750,-0.9094,0.07110,0.06423,-0.0568,1.0000,0.0376 -16.500,-0.9023,0.06895,0.06198,-0.0573,1.0000,0.0382 -16.250,-0.8947,0.06691,0.05989,-0.0577,1.0000,0.0389 -16.000,-0.8877,0.06485,0.05784,-0.0581,1.0000,0.0395 -15.750,-0.8805,0.06281,0.05577,-0.0586,1.0000,0.0402 -15.500,-0.8724,0.06089,0.05382,-0.0589,1.0000,0.0410 -15.250,-0.8643,0.05901,0.05188,-0.0591,1.0000,0.0419 -15.000,-0.8558,0.05720,0.05002,-0.0593,1.0000,0.0429 -14.750,-0.8468,0.05545,0.04822,-0.0595,1.0000,0.0439 -14.500,-0.8396,0.05357,0.04635,-0.0597,1.0000,0.0448 -14.250,-0.8316,0.05177,0.04454,-0.0599,1.0000,0.0460 -14.000,-0.8226,0.05011,0.04285,-0.0599,1.0000,0.0473 -13.750,-0.8131,0.04852,0.04121,-0.0600,1.0000,0.0488 -13.500,-0.8056,0.04678,0.03948,-0.0600,1.0000,0.0501 -13.250,-0.7976,0.04512,0.03783,-0.0599,1.0000,0.0514 -13.000,-0.7895,0.04352,0.03622,-0.0596,0.9906,0.0532 -12.750,-0.7635,0.04178,0.03438,-0.0634,0.9380,0.0559 -12.500,-0.7427,0.03993,0.03246,-0.0662,0.9123,0.0588 -12.250,-0.7263,0.03850,0.03090,-0.0672,0.8911,0.0619 -12.000,-0.7161,0.03700,0.02935,-0.0673,0.8735,0.0645 -11.750,-0.7059,0.03568,0.02795,-0.0670,0.8588,0.0683 -11.500,-0.6977,0.03433,0.02655,-0.0664,0.8461,0.0720 -11.250,-0.6894,0.03310,0.02525,-0.0656,0.8338,0.0764 -11.000,-0.6823,0.03181,0.02392,-0.0647,0.8231,0.0813 -10.750,-0.6738,0.03065,0.02270,-0.0638,0.8127,0.0870 -10.500,-0.6676,0.02934,0.02138,-0.0628,0.8035,0.0936 -10.250,-0.6607,0.02813,0.02015,-0.0617,0.7942,0.1009 -10.000,-0.6538,0.02695,0.01894,-0.0605,0.7860,0.1096 -9.750,-0.6481,0.02572,0.01772,-0.0592,0.7775,0.1202 -9.500,-0.6433,0.02451,0.01650,-0.0576,0.7700,0.1317 -9.250,-0.6391,0.02328,0.01531,-0.0561,0.7619,0.1458 -9.000,-0.6361,0.02206,0.01412,-0.0542,0.7541,0.1621 -8.750,-0.6344,0.02085,0.01295,-0.0521,0.7472,0.1801 -8.500,-0.6349,0.01962,0.01179,-0.0496,0.7392,0.2015 -8.250,-0.6370,0.01848,0.01072,-0.0465,0.7322,0.2253 -8.000,-0.6441,0.01754,0.00986,-0.0422,0.7256,0.2514 -7.750,-0.6460,0.01664,0.00913,-0.0385,0.7187,0.2874 -7.500,-0.6425,0.01581,0.00850,-0.0355,0.7127,0.3335 -7.250,-0.6327,0.01526,0.00819,-0.0331,0.7074,0.3825 -7.000,-0.6133,0.01508,0.00815,-0.0320,0.7012,0.4243 -6.750,-0.5904,0.01499,0.00799,-0.0314,0.6955,0.4479 -6.500,-0.5663,0.01495,0.00787,-0.0308,0.6906,0.4640 -6.250,-0.5410,0.01493,0.00779,-0.0305,0.6854,0.4761 -6.000,-0.5156,0.01488,0.00762,-0.0303,0.6797,0.4867 -5.750,-0.4887,0.01489,0.00760,-0.0301,0.6745,0.4945 -5.500,-0.4626,0.01488,0.00745,-0.0299,0.6700,0.5031 -5.250,-0.4355,0.01492,0.00747,-0.0298,0.6647,0.5114 -5.000,-0.4089,0.01500,0.00750,-0.0297,0.6592,0.5216 -4.750,-0.3815,0.01510,0.00756,-0.0295,0.6543,0.5300 -4.500,-0.3539,0.01518,0.00757,-0.0295,0.6503,0.5367 -4.250,-0.3267,0.01511,0.00740,-0.0296,0.6457,0.5415 -4.000,-0.2993,0.01499,0.00719,-0.0298,0.6411,0.5446 -3.750,-0.2708,0.01493,0.00710,-0.0299,0.6368,0.5469 -3.500,-0.2425,0.01488,0.00698,-0.0301,0.6331,0.5493 -3.250,-0.2143,0.01483,0.00686,-0.0303,0.6297,0.5519 -3.000,-0.1862,0.01477,0.00677,-0.0306,0.6256,0.5547 -2.750,-0.1582,0.01471,0.00666,-0.0308,0.6215,0.5578 -2.500,-0.1302,0.01465,0.00651,-0.0311,0.6179,0.5611 -2.250,-0.1020,0.01458,0.00636,-0.0313,0.6146,0.5638 -2.000,-0.0733,0.01455,0.00629,-0.0316,0.6118,0.5658 -1.750,-0.0449,0.01453,0.00627,-0.0318,0.6084,0.5681 -1.500,-0.0167,0.01450,0.00625,-0.0321,0.6047,0.5703 -1.250,0.0117,0.01447,0.00620,-0.0323,0.6011,0.5726 -1.000,0.0401,0.01445,0.00613,-0.0326,0.5979,0.5750 -0.750,0.0687,0.01443,0.00606,-0.0329,0.5952,0.5775 -0.500,0.0974,0.01443,0.00598,-0.0333,0.5928,0.5805 -0.250,0.1258,0.01444,0.00597,-0.0336,0.5901,0.5831 0.000,0.1540,0.01445,0.00604,-0.0338,0.5873,0.5853 0.250,0.1822,0.01447,0.00610,-0.0341,0.5844,0.5876 0.500,0.2106,0.01450,0.00615,-0.0344,0.5818,0.5901 0.750,0.2390,0.01453,0.00618,-0.0346,0.5794,0.5928 1.000,0.2676,0.01457,0.00621,-0.0350,0.5772,0.5958 1.250,0.2965,0.01462,0.00622,-0.0353,0.5750,0.5989 1.750,0.3529,0.01474,0.00639,-0.0359,0.5702,0.6046 2.000,0.3806,0.01482,0.00656,-0.0361,0.5677,0.6074 2.250,0.4084,0.01491,0.00671,-0.0363,0.5654,0.6107 2.500,0.4364,0.01501,0.00684,-0.0365,0.5630,0.6145 2.750,0.4647,0.01509,0.00694,-0.0368,0.5606,0.6187 3.000,0.4931,0.01517,0.00702,-0.0371,0.5582,0.6226 3.250,0.5216,0.01524,0.00714,-0.0373,0.5559,0.6257 3.500,0.5496,0.01535,0.00730,-0.0375,0.5534,0.6293 3.750,0.5760,0.01548,0.00754,-0.0375,0.5504,0.6334 4.000,0.6029,0.01562,0.00775,-0.0376,0.5476,0.6379 4.250,0.6302,0.01575,0.00793,-0.0377,0.5447,0.6422 4.500,0.6574,0.01586,0.00813,-0.0378,0.5421,0.6459 4.750,0.6851,0.01596,0.00831,-0.0379,0.5396,0.6502 5.000,0.7136,0.01607,0.00845,-0.0382,0.5373,0.6551 5.250,0.7410,0.01623,0.00865,-0.0383,0.5344,0.6603 5.500,0.7646,0.01637,0.00895,-0.0378,0.5295,0.6647 5.750,0.7900,0.01638,0.00905,-0.0375,0.5235,0.6694 6.000,0.8190,0.01632,0.00895,-0.0376,0.5177,0.6750 6.250,0.8399,0.01642,0.00919,-0.0367,0.5094,0.6812 6.500,0.8650,0.01635,0.00915,-0.0362,0.5012,0.6862 6.750,0.8866,0.01645,0.00939,-0.0353,0.4931,0.6919 7.000,0.9098,0.01653,0.00953,-0.0346,0.4857,0.6983 7.250,0.9330,0.01662,0.00968,-0.0340,0.4784,0.7041 7.500,0.9525,0.01675,0.00995,-0.0327,0.4691,0.7095 7.750,0.9719,0.01688,0.01015,-0.0315,0.4589,0.7159 8.000,0.9889,0.01702,0.01031,-0.0299,0.4453,0.7227 8.250,1.0001,0.01724,0.01064,-0.0273,0.4277,0.7284 8.500,1.0055,0.01753,0.01097,-0.0239,0.4042,0.7353 8.750,1.0050,0.01810,0.01140,-0.0198,0.3738,0.7431 9.000,0.9980,0.01909,0.01227,-0.0154,0.3446,0.7499 9.250,0.9912,0.02039,0.01345,-0.0116,0.3157,0.7583 9.500,0.9833,0.02194,0.01489,-0.0081,0.2881,0.7665 9.750,0.9740,0.02373,0.01659,-0.0048,0.2621,0.7751 10.000,0.9679,0.02556,0.01834,-0.0022,0.2382,0.7842 10.250,0.9616,0.02749,0.02022,0.0002,0.2166,0.7930 10.500,0.9572,0.02948,0.02215,0.0021,0.1972,0.8028 11.000,0.9527,0.03336,0.02598,0.0054,0.1642,0.8231 11.250,0.9524,0.03527,0.02788,0.0067,0.1499,0.8344 11.500,0.9538,0.03715,0.02977,0.0078,0.1369,0.8468 11.750,0.9558,0.03905,0.03167,0.0088,0.1248,0.8612 12.000,0.9589,0.04086,0.03352,0.0097,0.1144,0.8789 12.250,0.9631,0.04269,0.03540,0.0104,0.1055,0.9036 12.500,0.9728,0.04469,0.03745,0.0095,0.0963,0.9481 13.000,0.9842,0.04856,0.04130,0.0096,0.0825,1.0000 13.250,0.9908,0.05062,0.04335,0.0095,0.0766,1.0000 13.500,0.9967,0.05277,0.04548,0.0094,0.0715,1.0000 13.750,1.0043,0.05479,0.04752,0.0092,0.0667,1.0000 14.000,1.0099,0.05702,0.04974,0.0090,0.0628,1.0000 14.250,1.0172,0.05914,0.05189,0.0087,0.0590,1.0000 14.500,1.0228,0.06146,0.05420,0.0084,0.0560,1.0000 14.750,1.0301,0.06363,0.05643,0.0081,0.0533,1.0000 15.000,1.0350,0.06609,0.05889,0.0077,0.0508,1.0000 15.250,1.0416,0.06840,0.06124,0.0073,0.0486,1.0000 15.500,1.0477,0.07081,0.06370,0.0068,0.0466,1.0000 15.750,1.0518,0.07347,0.06638,0.0062,0.0449,1.0000 16.000,1.0579,0.07594,0.06890,0.0056,0.0434,1.0000 16.250,1.0636,0.07847,0.07149,0.0050,0.0418,1.0000 16.500,1.0683,0.08116,0.07422,0.0042,0.0405,1.0000 16.750,1.0714,0.08410,0.07718,0.0033,0.0394,1.0000 17.000,1.0772,0.08671,0.07988,0.0026,0.0382,1.0000 17.250,1.0822,0.08947,0.08271,0.0017,0.0371,1.0000 17.500,1.0861,0.09238,0.08567,0.0007,0.0361,1.0000 17.750,1.0896,0.09537,0.08870,-0.0003,0.0354,1.0000