Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-naca0021-il-100000-n5 Airfoil,naca0021-il Reynolds number,100000 Ncrit,5 Mach,0 Max Cl/Cd,35.6022 Max Cl/Cd alpha,8.5 Url,http://airfoiltools.com/polar/csv?polar=xf-naca0021-il-100000-n5 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -18.000,-0.9402,0.10752,0.09991,-0.0370,1.0000,0.1018 -17.750,-0.9328,0.10538,0.09779,-0.0377,1.0000,0.1038 -17.500,-0.9578,0.09795,0.09019,-0.0412,1.0000,0.1062 -17.250,-0.9909,0.08952,0.08148,-0.0450,1.0000,0.1087 -17.000,-0.9992,0.08512,0.07699,-0.0466,1.0000,0.1109 -16.750,-0.9955,0.08260,0.07448,-0.0473,1.0000,0.1131 -16.500,-1.0025,0.07853,0.07032,-0.0486,1.0000,0.1156 -16.250,-1.0153,0.07374,0.06534,-0.0502,1.0000,0.1183 -16.000,-1.0195,0.07026,0.06176,-0.0511,1.0000,0.1207 -15.750,-1.0163,0.06785,0.05937,-0.0515,1.0000,0.1232 -15.500,-1.0189,0.06474,0.05618,-0.0521,1.0000,0.1261 -15.250,-1.0251,0.06123,0.05251,-0.0528,1.0000,0.1291 -15.000,-1.0233,0.05880,0.05005,-0.0529,1.0000,0.1319 -14.750,-1.0209,0.05655,0.04779,-0.0529,1.0000,0.1348 -14.500,-1.0214,0.05400,0.04515,-0.0530,1.0000,0.1381 -14.250,-1.0237,0.05130,0.04227,-0.0529,1.0000,0.1417 -14.000,-1.0175,0.04963,0.04067,-0.0524,1.0000,0.1447 -13.750,-1.0148,0.04765,0.03865,-0.0519,1.0000,0.1482 -13.500,-1.0133,0.04558,0.03646,-0.0514,1.0000,0.1522 -13.250,-1.0085,0.04391,0.03477,-0.0506,1.0000,0.1558 -13.000,-1.0040,0.04231,0.03317,-0.0497,1.0000,0.1595 -12.750,-1.0002,0.04067,0.03145,-0.0486,1.0000,0.1639 -12.500,-0.9950,0.03921,0.02996,-0.0474,1.0000,0.1681 -12.250,-0.9897,0.03791,0.02868,-0.0460,1.0000,0.1722 -12.000,-0.9848,0.03661,0.02731,-0.0445,1.0000,0.1770 -11.750,-0.9793,0.03543,0.02609,-0.0427,1.0000,0.1817 -11.500,-0.9744,0.03437,0.02508,-0.0407,1.0000,0.1861 -11.250,-0.9701,0.03337,0.02402,-0.0385,1.0000,0.1912 -11.000,-0.9657,0.03245,0.02309,-0.0360,1.0000,0.1962 -10.750,-0.9631,0.03164,0.02232,-0.0330,1.0000,0.2008 -10.500,-0.9614,0.03091,0.02155,-0.0297,1.0000,0.2062 -10.250,-0.9600,0.03024,0.02087,-0.0262,1.0000,0.2113 -10.000,-0.9613,0.02966,0.02035,-0.0221,1.0000,0.2159 -9.750,-0.9641,0.02916,0.01983,-0.0176,1.0000,0.2211 -9.500,-0.9682,0.02873,0.01935,-0.0127,1.0000,0.2262 -9.250,-0.9754,0.02836,0.01905,-0.0071,1.0000,0.2304 -9.000,-0.9797,0.02800,0.01870,-0.0020,1.0000,0.2355 -8.750,-0.9798,0.02764,0.01827,0.0023,1.0000,0.2416 -8.500,-0.9662,0.02715,0.01787,0.0041,0.9973,0.2483 -8.250,-0.9335,0.02663,0.01727,0.0022,0.9916,0.2585 -8.000,-0.9040,0.02607,0.01679,0.0011,0.9844,0.2674 -7.750,-0.8699,0.02558,0.01625,-0.0009,0.9784,0.2782 -7.500,-0.8414,0.02509,0.01582,-0.0016,0.9702,0.2878 -7.250,-0.8072,0.02462,0.01535,-0.0035,0.9640,0.2987 -7.000,-0.7788,0.02420,0.01494,-0.0041,0.9554,0.3093 -6.750,-0.7451,0.02376,0.01455,-0.0056,0.9487,0.3201 -6.500,-0.7144,0.02337,0.01412,-0.0066,0.9409,0.3319 -6.250,-0.6831,0.02297,0.01380,-0.0075,0.9329,0.3426 -6.000,-0.6474,0.02256,0.01338,-0.0093,0.9270,0.3549 -5.750,-0.6236,0.02224,0.01310,-0.0086,0.9157,0.3654 -5.500,-0.5883,0.02183,0.01272,-0.0101,0.9093,0.3774 -5.250,-0.5654,0.02155,0.01244,-0.0092,0.8974,0.3886 -5.000,-0.5319,0.02118,0.01212,-0.0102,0.8900,0.4002 -4.750,-0.5085,0.02092,0.01182,-0.0094,0.8780,0.4120 -4.500,-0.4764,0.02057,0.01155,-0.0100,0.8698,0.4233 -4.250,-0.4526,0.02033,0.01129,-0.0091,0.8575,0.4350 -4.000,-0.4218,0.02001,0.01103,-0.0094,0.8485,0.4468 -3.750,-0.3976,0.01980,0.01082,-0.0086,0.8358,0.4583 -3.500,-0.3676,0.01951,0.01054,-0.0087,0.8263,0.4709 -3.250,-0.3435,0.01933,0.01040,-0.0077,0.8129,0.4821 -3.000,-0.3136,0.01906,0.01008,-0.0078,0.8032,0.4954 -2.750,-0.2897,0.01892,0.01002,-0.0068,0.7890,0.5063 -2.500,-0.2623,0.01872,0.00978,-0.0064,0.7775,0.5194 -2.250,-0.2360,0.01857,0.00968,-0.0058,0.7643,0.5311 -2.000,-0.2100,0.01842,0.00953,-0.0051,0.7513,0.5436 -1.750,-0.1825,0.01828,0.00937,-0.0047,0.7392,0.5565 -1.500,-0.1573,0.01819,0.00932,-0.0039,0.7251,0.5685 -1.250,-0.1306,0.01807,0.00914,-0.0033,0.7130,0.5823 -1.000,-0.1044,0.01802,0.00915,-0.0027,0.6989,0.5940 -0.750,-0.0788,0.01795,0.00906,-0.0019,0.6858,0.6074 -0.500,-0.0516,0.01791,0.00901,-0.0014,0.6731,0.6202 -0.250,-0.0263,0.01789,0.00903,-0.0006,0.6591,0.6329 0.000,0.0000,0.01787,0.00894,0.0000,0.6469,0.6469 0.250,0.0263,0.01789,0.00903,0.0006,0.6329,0.6591 0.500,0.0516,0.01791,0.00901,0.0014,0.6202,0.6731 0.750,0.0788,0.01795,0.00906,0.0019,0.6074,0.6858 1.000,0.1044,0.01802,0.00915,0.0027,0.5940,0.6989 1.250,0.1306,0.01807,0.00914,0.0033,0.5823,0.7130 1.500,0.1573,0.01819,0.00932,0.0039,0.5685,0.7251 1.750,0.1825,0.01828,0.00937,0.0047,0.5565,0.7392 2.000,0.2100,0.01842,0.00953,0.0051,0.5436,0.7514 2.250,0.2360,0.01857,0.00968,0.0058,0.5311,0.7643 2.500,0.2623,0.01872,0.00977,0.0064,0.5194,0.7775 2.750,0.2897,0.01892,0.01002,0.0068,0.5064,0.7890 3.000,0.3136,0.01906,0.01008,0.0078,0.4954,0.8032 3.250,0.3435,0.01933,0.01040,0.0077,0.4821,0.8129 3.500,0.3676,0.01951,0.01054,0.0087,0.4709,0.8263 3.750,0.3976,0.01980,0.01082,0.0086,0.4583,0.8358 4.000,0.4218,0.02001,0.01103,0.0094,0.4468,0.8485 4.250,0.4526,0.02033,0.01129,0.0091,0.4350,0.8576 4.500,0.4764,0.02057,0.01155,0.0100,0.4233,0.8698 4.750,0.5085,0.02091,0.01182,0.0094,0.4120,0.8781 5.000,0.5319,0.02117,0.01211,0.0102,0.4002,0.8901 5.250,0.5654,0.02155,0.01244,0.0092,0.3886,0.8974 5.500,0.5884,0.02183,0.01272,0.0101,0.3774,0.9094 5.750,0.6236,0.02223,0.01310,0.0086,0.3654,0.9157 6.000,0.6472,0.02255,0.01337,0.0093,0.3549,0.9271 6.250,0.6832,0.02297,0.01380,0.0075,0.3426,0.9329 6.500,0.7144,0.02337,0.01411,0.0066,0.3319,0.9410 6.750,0.7453,0.02376,0.01454,0.0056,0.3201,0.9488 7.000,0.7789,0.02419,0.01493,0.0040,0.3093,0.9555 7.250,0.8074,0.02462,0.01535,0.0034,0.2987,0.9640 7.500,0.8416,0.02508,0.01582,0.0016,0.2878,0.9703 7.750,0.8702,0.02558,0.01624,0.0008,0.2782,0.9785 8.000,0.9042,0.02607,0.01678,-0.0011,0.2674,0.9845 8.250,0.9338,0.02662,0.01726,-0.0023,0.2585,0.9916 8.500,0.9666,0.02715,0.01786,-0.0041,0.2482,0.9974 8.750,0.9798,0.02763,0.01825,-0.0023,0.2417,1.0000 9.000,0.9797,0.02799,0.01869,0.0020,0.2355,1.0000 9.250,0.9755,0.02835,0.01904,0.0071,0.2303,1.0000 9.500,0.9684,0.02872,0.01934,0.0126,0.2262,1.0000 9.750,0.9643,0.02915,0.01981,0.0176,0.2211,1.0000 10.000,0.9615,0.02964,0.02033,0.0221,0.2159,1.0000 10.250,0.9603,0.03022,0.02085,0.0262,0.2113,1.0000 10.500,0.9617,0.03089,0.02153,0.0297,0.2061,1.0000 10.750,0.9636,0.03163,0.02230,0.0329,0.2008,1.0000 11.000,0.9662,0.03243,0.02306,0.0359,0.1962,1.0000 11.250,0.9707,0.03335,0.02400,0.0384,0.1912,1.0000 11.500,0.9752,0.03435,0.02505,0.0406,0.1860,1.0000 11.750,0.9802,0.03541,0.02607,0.0426,0.1816,1.0000 12.000,0.9858,0.03659,0.02729,0.0443,0.1769,1.0000 12.250,0.9907,0.03788,0.02865,0.0459,0.1721,1.0000 12.500,0.9962,0.03918,0.02992,0.0473,0.1681,1.0000 12.750,1.0014,0.04064,0.03143,0.0485,0.1638,1.0000 13.000,1.0053,0.04227,0.03314,0.0495,0.1594,1.0000 13.250,1.0100,0.04387,0.03473,0.0504,0.1557,1.0000 13.500,1.0148,0.04556,0.03643,0.0512,0.1521,1.0000 13.750,1.0165,0.04762,0.03861,0.0517,0.1481,1.0000 14.000,1.0193,0.04959,0.04062,0.0522,0.1446,1.0000 14.250,1.0255,0.05126,0.04223,0.0526,0.1416,1.0000 14.500,1.0232,0.05397,0.04511,0.0527,0.1380,1.0000 14.750,1.0229,0.05650,0.04773,0.0527,0.1347,1.0000 15.000,1.0257,0.05872,0.04996,0.0527,0.1318,1.0000 15.250,1.0271,0.06121,0.05248,0.0525,0.1290,1.0000 15.500,1.0212,0.06468,0.05612,0.0518,0.1259,1.0000 15.750,1.0190,0.06776,0.05927,0.0512,0.1231,1.0000 16.000,1.0225,0.07012,0.06162,0.0509,0.1206,1.0000 16.250,1.0175,0.07372,0.06532,0.0499,0.1182,1.0000 16.500,1.0052,0.07846,0.07025,0.0483,0.1155,1.0000 16.750,0.9987,0.08245,0.07433,0.0470,0.1130,1.0000 17.000,1.0031,0.08489,0.07674,0.0463,0.1108,1.0000 17.250,0.9931,0.08956,0.08152,0.0446,0.1086,1.0000 17.500,0.9608,0.09786,0.09011,0.0408,0.1061,1.0000 17.750,0.9377,0.10500,0.09740,0.0375,0.1037,1.0000 18.000,0.9457,0.10705,0.09942,0.0368,0.1018,1.0000