Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-usa98-il-200000 Airfoil,usa98-il Reynolds number,200000 Ncrit,9 Mach,0 Max Cl/Cd,84.0922 Max Cl/Cd alpha,7 Url,http://airfoiltools.com/polar/csv?polar=xf-usa98-il-200000 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -8.250,-0.0968,0.10151,0.09759,-0.0769,0.9690,0.0766 -8.000,-0.0818,0.09814,0.09421,-0.0807,0.9598,0.0787 -7.750,-0.0894,0.09299,0.08905,-0.0922,0.9462,0.0813 -7.500,-0.0582,0.08961,0.08567,-0.0930,0.9441,0.0819 -7.250,-0.0286,0.08647,0.08252,-0.0954,0.9418,0.0829 -7.000,-0.0113,0.08389,0.07994,-0.0968,0.9313,0.0844 -6.750,-0.0152,0.07756,0.07356,-0.1157,0.9135,0.0903 -6.500,0.0070,0.07488,0.07088,-0.1128,0.9084,0.0908 -6.250,0.0306,0.07256,0.06855,-0.1123,0.9012,0.0916 -6.000,0.0595,0.06992,0.06587,-0.1145,0.8963,0.0930 -5.750,0.0801,0.06738,0.06330,-0.1172,0.8860,0.0951 -5.500,0.1058,0.06019,0.05598,-0.1350,0.8754,0.1016 -5.250,0.1497,0.05213,0.04749,-0.1586,0.8649,0.1123 -5.000,0.1679,0.05059,0.04608,-0.1547,0.8573,0.1130 -4.750,0.1863,0.04999,0.04551,-0.1514,0.8490,0.1138 -4.500,0.2081,0.04913,0.04461,-0.1498,0.8418,0.1151 -4.250,0.2406,0.04583,0.04117,-0.1575,0.8325,0.1236 -4.000,0.2872,0.03965,0.03441,-0.1731,0.8254,0.1402 -3.750,0.3043,0.03806,0.03299,-0.1711,0.8171,0.1415 -3.500,0.3267,0.03731,0.03228,-0.1698,0.8098,0.1432 -3.250,0.3931,0.02497,0.01816,-0.1874,0.8046,0.1022 -3.000,0.4216,0.02342,0.01645,-0.1879,0.7966,0.0969 -2.750,0.4572,0.02196,0.01425,-0.1893,0.7898,0.0904 -2.500,0.4875,0.02114,0.01324,-0.1899,0.7836,0.0899 -2.250,0.5156,0.02033,0.01232,-0.1900,0.7759,0.0898 -2.000,0.5459,0.01976,0.01156,-0.1904,0.7693,0.0901 -1.750,0.5753,0.01891,0.01064,-0.1908,0.7631,0.0915 -1.500,0.6027,0.01843,0.01016,-0.1907,0.7557,0.0929 -1.250,0.6323,0.01802,0.00968,-0.1909,0.7493,0.0940 -1.000,0.6618,0.01771,0.00931,-0.1910,0.7433,0.0952 -0.750,0.6889,0.01742,0.00903,-0.1907,0.7359,0.0966 -0.500,0.7183,0.01715,0.00872,-0.1908,0.7297,0.0983 -0.250,0.7482,0.01704,0.00853,-0.1909,0.7240,0.1005 0.000,0.7748,0.01666,0.00830,-0.1907,0.7165,0.1042 0.250,0.8040,0.01647,0.00813,-0.1908,0.7102,0.1081 0.500,0.8347,0.01640,0.00798,-0.1911,0.7050,0.1121 0.750,0.8613,0.01622,0.00793,-0.1909,0.6975,0.1182 1.000,0.8906,0.01607,0.00779,-0.1910,0.6910,0.1298 1.250,0.9227,0.01555,0.00779,-0.1920,0.6859,0.2946 1.500,0.9481,0.01566,0.00817,-0.1914,0.6786,0.4048 1.750,0.9758,0.01577,0.00831,-0.1911,0.6720,0.4420 2.000,1.0054,0.01587,0.00838,-0.1911,0.6668,0.4701 2.250,1.0305,0.01599,0.00860,-0.1905,0.6596,0.4926 2.500,1.0577,0.01603,0.00868,-0.1902,0.6530,0.5170 2.750,1.0870,0.01605,0.00870,-0.1902,0.6476,0.5464 3.000,1.1114,0.01610,0.00893,-0.1894,0.6402,0.5806 3.250,1.1380,0.01599,0.00894,-0.1889,0.6326,0.6208 3.500,1.1641,0.01584,0.00894,-0.1882,0.6251,0.6823 3.750,1.1832,0.01533,0.00884,-0.1859,0.6165,1.0000 4.000,1.2129,0.01546,0.00880,-0.1861,0.6101,1.0000 4.250,1.2381,0.01568,0.00901,-0.1855,0.6026,1.0000 4.500,1.2649,0.01585,0.00912,-0.1851,0.5955,1.0000 4.750,1.2937,0.01604,0.00919,-0.1851,0.5894,1.0000 5.000,1.3171,0.01627,0.00946,-0.1842,0.5814,1.0000 5.250,1.3442,0.01644,0.00958,-0.1838,0.5747,1.0000 5.500,1.3700,0.01669,0.00980,-0.1833,0.5676,1.0000 5.750,1.3941,0.01690,0.01002,-0.1825,0.5596,1.0000 6.000,1.4225,0.01712,0.01013,-0.1824,0.5530,1.0000 6.250,1.4438,0.01739,0.01049,-0.1811,0.5446,1.0000 6.500,1.4692,0.01758,0.01061,-0.1804,0.5364,1.0000 6.750,1.4906,0.01782,0.01089,-0.1790,0.5268,1.0000 7.000,1.5145,0.01801,0.01101,-0.1781,0.5172,1.0000 7.250,1.5341,0.01828,0.01134,-0.1764,0.5070,1.0000 7.500,1.5577,0.01853,0.01150,-0.1754,0.4978,1.0000 7.750,1.5748,0.01882,0.01189,-0.1732,0.4869,1.0000 8.000,1.5956,0.01911,0.01212,-0.1718,0.4767,1.0000 8.250,1.6118,0.01942,0.01248,-0.1694,0.4652,1.0000 8.500,1.6282,0.01977,0.01285,-0.1672,0.4538,1.0000 8.750,1.6445,0.02015,0.01316,-0.1649,0.4425,1.0000 9.000,1.6555,0.02056,0.01365,-0.1617,0.4297,1.0000 9.250,1.6647,0.02102,0.01412,-0.1582,0.4168,1.0000 9.500,1.6731,0.02159,0.01464,-0.1546,0.4041,1.0000 9.750,1.6804,0.02223,0.01529,-0.1509,0.3904,1.0000 10.000,1.6867,0.02297,0.01604,-0.1473,0.3756,1.0000 10.250,1.6929,0.02382,0.01687,-0.1437,0.3610,1.0000 10.500,1.6986,0.02477,0.01781,-0.1403,0.3471,1.0000 10.750,1.7033,0.02585,0.01885,-0.1369,0.3336,1.0000 11.000,1.7069,0.02706,0.02004,-0.1335,0.3200,1.0000 11.250,1.7112,0.02833,0.02133,-0.1304,0.3063,1.0000 11.500,1.7146,0.02975,0.02274,-0.1274,0.2935,1.0000 11.750,1.7163,0.03136,0.02434,-0.1245,0.2813,1.0000 12.000,1.7167,0.03318,0.02612,-0.1216,0.2689,1.0000 12.250,1.7185,0.03502,0.02801,-0.1192,0.2561,1.0000 12.500,1.7184,0.03710,0.03010,-0.1168,0.2435,1.0000 12.750,1.7163,0.03945,0.03244,-0.1145,0.2306,1.0000 13.000,1.7123,0.04209,0.03506,-0.1122,0.2165,1.0000 13.250,1.7066,0.04501,0.03797,-0.1102,0.2004,1.0000 13.500,1.6986,0.04832,0.04126,-0.1082,0.1809,1.0000 13.750,1.6852,0.05231,0.04516,-0.1063,0.1599,1.0000 14.000,1.6709,0.05653,0.04929,-0.1046,0.1384,1.0000 14.250,1.6560,0.06097,0.05364,-0.1031,0.1231,1.0000 14.500,1.6439,0.06524,0.05787,-0.1019,0.1128,1.0000 14.750,1.6337,0.06937,0.06200,-0.1009,0.1056,1.0000 15.000,1.6235,0.07360,0.06621,-0.1001,0.1003,1.0000 15.250,1.6178,0.07734,0.07000,-0.0994,0.0958,1.0000 15.500,1.6118,0.08116,0.07384,-0.0989,0.0921,1.0000 15.750,1.6044,0.08508,0.07773,-0.0983,0.0890,1.0000 16.000,1.6036,0.08829,0.08104,-0.0979,0.0859,1.0000 16.250,1.6016,0.09161,0.08438,-0.0976,0.0831,1.0000 16.500,1.5994,0.09472,0.08742,-0.0969,0.0806,1.0000