Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-sd8020-il-1000000 Airfoil,sd8020-il Reynolds number,1000000 Ncrit,9 Mach,0 Max Cl/Cd,76.448 Max Cl/Cd alpha,6.25 Url,http://airfoiltools.com/polar/csv?polar=xf-sd8020-il-1000000 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -17.750,-0.9181,0.14029,0.13825,0.0132,1.0000,0.0060 -17.500,-0.9402,0.13065,0.12853,0.0081,1.0000,0.0062 -17.250,-0.9674,0.12017,0.11792,0.0025,1.0000,0.0060 -17.000,-0.9915,0.11088,0.10853,-0.0024,1.0000,0.0061 -16.750,-1.0065,0.10358,0.10113,-0.0063,1.0000,0.0059 -16.500,-1.0304,0.09488,0.09232,-0.0109,1.0000,0.0059 -16.250,-1.0543,0.08645,0.08377,-0.0155,1.0000,0.0059 -16.000,-1.0716,0.07939,0.07662,-0.0194,1.0000,0.0058 -15.750,-1.0727,0.07514,0.07231,-0.0217,1.0000,0.0057 -15.500,-1.1044,0.06586,0.06286,-0.0270,1.0000,0.0056 -15.250,-1.1127,0.06044,0.05734,-0.0303,1.0000,0.0057 -15.000,-1.1449,0.05155,0.04823,-0.0357,1.0000,0.0058 -14.750,-1.1633,0.04541,0.04192,-0.0392,1.0000,0.0059 -14.500,-1.1769,0.04054,0.03688,-0.0414,1.0000,0.0059 -14.250,-1.1937,0.03603,0.03221,-0.0426,1.0000,0.0061 -14.000,-1.1956,0.03357,0.02963,-0.0424,1.0000,0.0061 -13.750,-1.2025,0.03101,0.02694,-0.0413,1.0000,0.0062 -13.500,-1.2054,0.02907,0.02489,-0.0395,1.0000,0.0063 -13.250,-1.2037,0.02765,0.02338,-0.0375,1.0000,0.0065 -13.000,-1.2006,0.02643,0.02206,-0.0350,1.0000,0.0065 -12.750,-1.1952,0.02545,0.02101,-0.0325,1.0000,0.0067 -12.500,-1.1899,0.02454,0.02001,-0.0295,1.0000,0.0069 -12.250,-1.1829,0.02372,0.01911,-0.0266,1.0000,0.0071 -12.000,-1.1716,0.02287,0.01817,-0.0245,1.0000,0.0073 -11.750,-1.1601,0.02196,0.01716,-0.0223,1.0000,0.0075 -11.500,-1.1454,0.02124,0.01635,-0.0205,1.0000,0.0077 -11.250,-1.1305,0.02050,0.01552,-0.0186,1.0000,0.0079 -11.000,-1.1125,0.01998,0.01495,-0.0172,1.0000,0.0081 -10.750,-1.1070,0.01842,0.01323,-0.0139,1.0000,0.0086 -10.500,-1.0917,0.01764,0.01239,-0.0120,1.0000,0.0091 -10.250,-1.0734,0.01709,0.01179,-0.0105,1.0000,0.0095 -10.000,-1.0548,0.01657,0.01121,-0.0090,1.0000,0.0101 -9.750,-1.0355,0.01611,0.01070,-0.0075,1.0000,0.0106 -9.500,-1.0156,0.01569,0.01023,-0.0061,1.0000,0.0110 -9.250,-1.0001,0.01485,0.00930,-0.0040,1.0000,0.0118 -9.000,-0.9818,0.01427,0.00869,-0.0024,1.0000,0.0128 -8.750,-0.9616,0.01387,0.00825,-0.0010,1.0000,0.0137 -8.500,-0.9410,0.01351,0.00785,0.0003,1.0000,0.0146 -8.250,-0.9197,0.01321,0.00751,0.0015,1.0000,0.0151 -8.000,-0.9024,0.01249,0.00672,0.0035,1.0000,0.0168 -7.750,-0.8820,0.01208,0.00630,0.0049,1.0000,0.0182 -7.500,-0.8609,0.01175,0.00594,0.0062,1.0000,0.0195 -7.250,-0.8402,0.01138,0.00551,0.0076,1.0000,0.0214 -7.000,-0.8198,0.01097,0.00512,0.0090,1.0000,0.0246 -6.750,-0.7988,0.01063,0.00477,0.0103,1.0000,0.0285 -6.500,-0.7784,0.01025,0.00444,0.0117,1.0000,0.0368 -6.250,-0.7577,0.00990,0.00415,0.0131,1.0000,0.0473 -6.000,-0.7355,0.00964,0.00391,0.0141,0.9999,0.0557 -5.750,-0.7009,0.00935,0.00368,0.0125,0.9982,0.0675 -5.500,-0.6659,0.00908,0.00346,0.0108,0.9963,0.0802 -5.250,-0.6303,0.00881,0.00326,0.0090,0.9945,0.0952 -5.000,-0.5964,0.00853,0.00305,0.0076,0.9923,0.1118 -4.750,-0.5630,0.00824,0.00286,0.0062,0.9895,0.1324 -4.500,-0.5283,0.00796,0.00268,0.0046,0.9870,0.1547 -4.250,-0.4925,0.00766,0.00250,0.0028,0.9849,0.1832 -4.000,-0.4556,0.00735,0.00234,0.0007,0.9833,0.2181 -3.750,-0.4253,0.00708,0.00217,0.0001,0.9782,0.2435 -3.500,-0.3907,0.00681,0.00201,-0.0014,0.9745,0.2742 -3.250,-0.3543,0.00655,0.00186,-0.0033,0.9717,0.3067 -3.000,-0.3246,0.00631,0.00173,-0.0037,0.9646,0.3355 -2.750,-0.2927,0.00604,0.00158,-0.0045,0.9575,0.3697 -2.500,-0.2635,0.00580,0.00146,-0.0048,0.9462,0.4036 -2.250,-0.2326,0.00558,0.00134,-0.0053,0.9327,0.4388 -2.000,-0.2030,0.00539,0.00122,-0.0055,0.9149,0.4730 -1.750,-0.1761,0.00524,0.00113,-0.0052,0.8928,0.5084 -1.500,-0.1503,0.00515,0.00106,-0.0046,0.8696,0.5415 -1.250,-0.1250,0.00507,0.00101,-0.0039,0.8462,0.5732 -1.000,-0.1001,0.00500,0.00097,-0.0031,0.8230,0.6053 -0.750,-0.0750,0.00495,0.00094,-0.0023,0.7987,0.6354 -0.500,-0.0500,0.00492,0.00092,-0.0015,0.7742,0.6649 -0.250,-0.0251,0.00490,0.00091,-0.0007,0.7485,0.6941 0.000,0.0000,0.00490,0.00091,0.0000,0.7217,0.7216 0.250,0.0250,0.00490,0.00091,0.0008,0.6942,0.7485 0.500,0.0500,0.00491,0.00093,0.0016,0.6661,0.7746 0.750,0.0749,0.00495,0.00095,0.0023,0.6364,0.7991 1.000,0.1000,0.00500,0.00097,0.0031,0.6056,0.8232 1.250,0.1249,0.00507,0.00101,0.0039,0.5728,0.8462 1.500,0.1502,0.00515,0.00106,0.0046,0.5407,0.8697 1.750,0.1759,0.00524,0.00113,0.0052,0.5072,0.8928 2.000,0.2030,0.00538,0.00122,0.0056,0.4741,0.9149 2.250,0.2325,0.00558,0.00134,0.0053,0.4390,0.9327 2.500,0.2635,0.00580,0.00146,0.0048,0.4037,0.9462 2.750,0.2929,0.00604,0.00158,0.0045,0.3703,0.9575 3.000,0.3246,0.00631,0.00173,0.0037,0.3354,0.9647 3.250,0.3544,0.00655,0.00186,0.0033,0.3067,0.9717 3.500,0.3909,0.00681,0.00201,0.0014,0.2733,0.9745 3.750,0.4255,0.00708,0.00217,-0.0001,0.2435,0.9782 4.000,0.4557,0.00735,0.00233,-0.0007,0.2182,0.9832 4.250,0.4923,0.00765,0.00250,-0.0027,0.1846,0.9849 4.500,0.5281,0.00796,0.00267,-0.0046,0.1545,0.9870 4.750,0.5631,0.00824,0.00286,-0.0063,0.1318,0.9895 5.000,0.5969,0.00852,0.00305,-0.0076,0.1123,0.9924 5.250,0.6308,0.00881,0.00326,-0.0091,0.0948,0.9946 5.500,0.6664,0.00908,0.00346,-0.0109,0.0801,0.9964 5.750,0.7012,0.00935,0.00368,-0.0126,0.0674,0.9983 6.000,0.7357,0.00964,0.00391,-0.0142,0.0556,0.9999 6.250,0.7576,0.00991,0.00415,-0.0131,0.0471,1.0000 6.500,0.7785,0.01024,0.00443,-0.0118,0.0374,1.0000 6.750,0.7991,0.01061,0.00476,-0.0104,0.0294,1.0000 7.000,0.8199,0.01096,0.00512,-0.0090,0.0248,1.0000 7.250,0.8403,0.01137,0.00550,-0.0076,0.0216,1.0000 7.500,0.8609,0.01176,0.00594,-0.0062,0.0196,1.0000 7.750,0.8821,0.01208,0.00629,-0.0049,0.0183,1.0000 8.000,0.9026,0.01247,0.00670,-0.0035,0.0170,1.0000 8.250,0.9203,0.01315,0.00744,-0.0016,0.0153,1.0000 8.500,0.9411,0.01350,0.00784,-0.0003,0.0146,1.0000 8.750,0.9619,0.01385,0.00822,0.0010,0.0137,1.0000 9.000,0.9822,0.01424,0.00865,0.0023,0.0128,1.0000 9.250,1.0007,0.01480,0.00924,0.0039,0.0119,1.0000 9.500,1.0160,0.01565,0.01019,0.0061,0.0110,1.0000 9.750,1.0360,0.01606,0.01065,0.0074,0.0106,1.0000 10.000,1.0553,0.01653,0.01117,0.0089,0.0101,1.0000 10.250,1.0741,0.01704,0.01173,0.0103,0.0095,1.0000 10.500,1.0922,0.01760,0.01234,0.0119,0.0090,1.0000 10.750,1.1069,0.01843,0.01324,0.0139,0.0085,1.0000 11.000,1.1134,0.01992,0.01487,0.0170,0.0081,1.0000 11.250,1.1318,0.02040,0.01542,0.0184,0.0079,1.0000 11.500,1.1468,0.02114,0.01624,0.0203,0.0077,1.0000 11.750,1.1610,0.02190,0.01710,0.0222,0.0074,1.0000 12.000,1.1729,0.02279,0.01808,0.0243,0.0073,1.0000 12.250,1.1836,0.02369,0.01907,0.0265,0.0070,1.0000 12.500,1.1913,0.02449,0.01995,0.0293,0.0068,1.0000 12.750,1.1944,0.02552,0.02109,0.0326,0.0067,1.0000 13.000,1.1988,0.02658,0.02223,0.0352,0.0066,1.0000 13.250,1.2063,0.02752,0.02323,0.0372,0.0064,1.0000 13.500,1.2067,0.02903,0.02484,0.0394,0.0063,1.0000 13.750,1.2045,0.03091,0.02684,0.0411,0.0062,1.0000 14.000,1.2013,0.03313,0.02917,0.0422,0.0061,1.0000 14.250,1.1890,0.03661,0.03280,0.0423,0.0059,1.0000 14.500,1.1790,0.04043,0.03677,0.0414,0.0059,1.0000 14.750,1.1605,0.04597,0.04249,0.0388,0.0058,1.0000 15.000,1.1481,0.05128,0.04795,0.0357,0.0058,1.0000 15.250,1.1146,0.06040,0.05730,0.0302,0.0057,1.0000 15.500,1.1123,0.06475,0.06173,0.0275,0.0058,1.0000 15.750,1.0798,0.07423,0.07138,0.0219,0.0057,1.0000 16.000,1.0759,0.07897,0.07619,0.0193,0.0058,1.0000