Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-hq258-il-50000 Airfoil,hq258-il Reynolds number,50000 Ncrit,9 Mach,0 Max Cl/Cd,39.2093 Max Cl/Cd alpha,5.75 Url,http://airfoiltools.com/polar/csv?polar=xf-hq258-il-50000 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -8.000,-0.4118,0.09885,0.09228,-0.0191,1.0000,0.2174 -7.750,-0.4114,0.09602,0.08955,-0.0189,1.0000,0.2290 -7.500,-0.4324,0.09551,0.08922,-0.0196,1.0000,0.2374 -7.250,-0.4104,0.09054,0.08425,-0.0172,1.0000,0.2558 -7.000,-0.4088,0.08785,0.08165,-0.0156,1.0000,0.2729 -6.750,-0.4154,0.08587,0.07980,-0.0139,1.0000,0.2894 -6.500,-0.4287,0.08440,0.07849,-0.0133,1.0000,0.3052 -6.250,-0.4224,0.08139,0.07556,-0.0100,1.0000,0.3319 -6.000,-0.4208,0.07896,0.07323,-0.0069,1.0000,0.3591 -5.750,-0.4009,0.07532,0.06960,-0.0022,1.0000,0.3942 -5.500,-0.3932,0.07280,0.06716,0.0022,1.0000,0.4340 -4.250,-0.3781,0.04975,0.04380,-0.0330,1.0000,0.2692 -4.000,-0.3075,0.03960,0.03172,-0.0480,1.0000,0.1242 -3.750,-0.2785,0.03638,0.02771,-0.0487,1.0000,0.1144 -3.500,-0.2529,0.03354,0.02441,-0.0487,1.0000,0.1139 -3.250,-0.2263,0.03088,0.02133,-0.0484,1.0000,0.1113 -3.000,-0.1990,0.02857,0.01857,-0.0478,1.0000,0.1098 -2.750,-0.1718,0.02659,0.01608,-0.0469,1.0000,0.1124 -2.500,-0.1466,0.02487,0.01421,-0.0458,1.0000,0.1248 -2.250,-0.1225,0.02329,0.01261,-0.0445,1.0000,0.1486 -2.000,-0.0960,0.02149,0.01101,-0.0438,1.0000,0.2056 -1.750,-0.0855,0.01783,0.01039,-0.0381,1.0000,0.7607 -1.500,-0.0652,0.01717,0.00937,-0.0345,1.0000,1.0000 -1.250,-0.0410,0.01734,0.00898,-0.0346,1.0000,1.0000 -1.000,-0.0173,0.01756,0.00875,-0.0348,1.0000,1.0000 -0.750,0.0059,0.01781,0.00857,-0.0348,1.0000,1.0000 -0.500,0.0287,0.01811,0.00855,-0.0349,1.0000,1.0000 -0.250,0.0511,0.01844,0.00860,-0.0348,1.0000,1.0000 0.000,0.0732,0.01880,0.00873,-0.0348,1.0000,1.0000 0.250,0.0949,0.01921,0.00894,-0.0348,1.0000,1.0000 0.500,0.1162,0.01965,0.00915,-0.0347,1.0000,1.0000 0.750,0.1372,0.02013,0.00949,-0.0346,1.0000,1.0000 1.000,0.1578,0.02065,0.00989,-0.0346,1.0000,1.0000 1.250,0.1781,0.02122,0.01036,-0.0345,1.0000,1.0000 1.500,0.1979,0.02184,0.01090,-0.0345,1.0000,1.0000 1.750,0.2174,0.02250,0.01151,-0.0345,1.0000,1.0000 2.000,0.2364,0.02323,0.01219,-0.0345,1.0000,1.0000 2.250,0.2549,0.02401,0.01296,-0.0346,1.0000,1.0000 2.500,0.2730,0.02487,0.01381,-0.0347,1.0000,1.0000 2.750,0.3315,0.02651,0.01551,-0.0424,0.9791,1.0000 3.000,0.3929,0.02794,0.01710,-0.0500,0.9553,1.0000 3.250,0.4457,0.02895,0.01826,-0.0556,0.9304,1.0000 3.500,0.4975,0.02975,0.01925,-0.0605,0.9049,1.0000 3.750,0.5498,0.03029,0.02003,-0.0649,0.8783,1.0000 4.000,0.6054,0.03044,0.02058,-0.0690,0.8504,1.0000 4.250,0.6695,0.02991,0.02045,-0.0733,0.8214,1.0000 4.500,0.7197,0.02914,0.02007,-0.0746,0.7890,1.0000 4.750,0.7769,0.02744,0.01892,-0.0752,0.7555,1.0000 5.000,0.8218,0.02572,0.01757,-0.0735,0.7154,1.0000 5.250,0.8577,0.02429,0.01638,-0.0705,0.6656,1.0000 5.500,0.8890,0.02328,0.01539,-0.0669,0.6048,1.0000 5.750,0.9124,0.02327,0.01520,-0.0634,0.5351,1.0000 6.000,0.9332,0.02401,0.01575,-0.0604,0.4669,1.0000 6.250,0.9535,0.02526,0.01668,-0.0579,0.4051,1.0000 6.500,0.9726,0.02684,0.01805,-0.0557,0.3483,1.0000 6.750,0.9889,0.02854,0.01957,-0.0532,0.2911,1.0000 7.000,0.9971,0.03036,0.02105,-0.0499,0.2215,1.0000 7.250,0.9947,0.03250,0.02262,-0.0457,0.1420,1.0000 7.500,1.0081,0.03563,0.02520,-0.0436,0.0975,1.0000 7.750,1.0350,0.03931,0.02914,-0.0424,0.0818,1.0000 8.000,1.0568,0.04271,0.03257,-0.0415,0.0717,1.0000 8.250,1.0732,0.04615,0.03674,-0.0396,0.0667,1.0000 8.500,1.0878,0.05022,0.04130,-0.0379,0.0642,1.0000 8.750,1.0968,0.05468,0.04630,-0.0360,0.0638,1.0000 9.000,1.0984,0.05944,0.05162,-0.0339,0.0642,1.0000 9.250,1.0937,0.06435,0.05702,-0.0318,0.0651,1.0000 9.500,1.0841,0.06920,0.06227,-0.0300,0.0662,1.0000 9.750,1.0699,0.07397,0.06735,-0.0284,0.0672,1.0000 10.000,1.0516,0.07833,0.07191,-0.0269,0.0682,1.0000 10.250,1.0317,0.08297,0.07669,-0.0265,0.0690,1.0000 10.500,1.0127,0.08811,0.08194,-0.0274,0.0698,1.0000 10.750,0.9975,0.09373,0.08763,-0.0293,0.0707,1.0000 11.000,0.9910,0.09961,0.09353,-0.0308,0.0717,1.0000