Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-usa40-il-200000 Airfoil,usa40-il Reynolds number,200000 Ncrit,9 Mach,0 Max Cl/Cd,71.0895 Max Cl/Cd alpha,7.25 Url,http://airfoiltools.com/polar/csv?polar=xf-usa40-il-200000 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -8.750,-0.3548,0.09394,0.09048,-0.0432,1.0000,0.0789 -8.500,-0.3934,0.09252,0.08919,-0.0402,1.0000,0.0790 -8.250,-0.3553,0.08888,0.08553,-0.0370,1.0000,0.0800 -8.000,-0.3583,0.08778,0.08449,-0.0333,1.0000,0.0806 -7.750,-0.3698,0.08700,0.08378,-0.0294,1.0000,0.0811 -7.500,-0.3466,0.08432,0.08110,-0.0318,0.9966,0.0830 -7.250,-0.3315,0.06780,0.06444,-0.0671,0.9805,0.0913 -7.000,-0.3019,0.06679,0.06350,-0.0650,0.9758,0.0923 -6.750,-0.2675,0.06444,0.06114,-0.0674,0.9715,0.0941 -6.500,-0.2515,0.03543,0.03043,-0.1017,0.9567,0.0673 -6.250,-0.2188,0.03101,0.02557,-0.1054,0.9480,0.0653 -6.000,-0.1766,0.02727,0.02131,-0.1100,0.9436,0.0646 -5.750,-0.1327,0.02435,0.01790,-0.1139,0.9407,0.0641 -5.500,-0.1014,0.02264,0.01592,-0.1148,0.9309,0.0644 -5.250,-0.0613,0.02105,0.01409,-0.1171,0.9259,0.0654 -5.000,-0.0296,0.01993,0.01277,-0.1176,0.9160,0.0667 -4.750,0.0075,0.01904,0.01164,-0.1189,0.9090,0.0688 -4.500,0.0360,0.01779,0.01037,-0.1189,0.8975,0.0708 -4.250,0.0684,0.01691,0.00949,-0.1194,0.8884,0.0731 -4.000,0.0970,0.01623,0.00876,-0.1191,0.8758,0.0759 -3.750,0.1255,0.01570,0.00812,-0.1187,0.8628,0.0789 -3.500,0.1536,0.01484,0.00735,-0.1185,0.8505,0.0842 -3.250,0.1823,0.01434,0.00677,-0.1182,0.8377,0.0910 -3.000,0.2091,0.01373,0.00621,-0.1178,0.8229,0.1010 -2.750,0.2368,0.01318,0.00569,-0.1175,0.8085,0.1175 -2.500,0.2648,0.01267,0.00534,-0.1174,0.7945,0.1493 -2.250,0.2928,0.01227,0.00511,-0.1172,0.7803,0.2146 -2.000,0.3204,0.01192,0.00491,-0.1171,0.7656,0.2732 -1.750,0.3475,0.01164,0.00482,-0.1168,0.7499,0.3350 -1.500,0.3745,0.01139,0.00476,-0.1165,0.7342,0.4100 -1.250,0.4008,0.01113,0.00475,-0.1159,0.7183,0.4958 -1.000,0.4263,0.01100,0.00483,-0.1150,0.7025,0.5829 -0.750,0.4517,0.01103,0.00493,-0.1139,0.6866,0.6469 -0.500,0.4769,0.01114,0.00502,-0.1127,0.6704,0.6959 -0.250,0.5018,0.01127,0.00510,-0.1115,0.6539,0.7332 0.000,0.5260,0.01140,0.00516,-0.1102,0.6374,0.7633 0.250,0.5499,0.01152,0.00520,-0.1088,0.6210,0.7913 0.500,0.5734,0.01160,0.00522,-0.1074,0.6044,0.8161 0.750,0.5969,0.01165,0.00521,-0.1060,0.5873,0.8390 1.000,0.6195,0.01166,0.00518,-0.1045,0.5706,0.8602 1.250,0.6421,0.01165,0.00514,-0.1031,0.5545,0.8840 1.500,0.6655,0.01163,0.00508,-0.1017,0.5389,0.9130 1.750,0.6987,0.01164,0.00503,-0.1026,0.5227,1.0000 2.000,0.7284,0.01189,0.00513,-0.1032,0.5081,1.0000 2.250,0.7575,0.01216,0.00523,-0.1036,0.4943,1.0000 2.500,0.7860,0.01244,0.00534,-0.1038,0.4808,1.0000 2.750,0.8142,0.01269,0.00550,-0.1040,0.4672,1.0000 3.000,0.8421,0.01297,0.00569,-0.1041,0.4553,1.0000 3.250,0.8698,0.01331,0.00586,-0.1041,0.4448,1.0000 3.500,0.8971,0.01356,0.00607,-0.1040,0.4332,1.0000 3.750,0.9240,0.01386,0.00628,-0.1039,0.4219,1.0000 4.000,0.9505,0.01420,0.00647,-0.1037,0.4114,1.0000 4.250,0.9772,0.01443,0.00671,-0.1035,0.4011,1.0000 4.500,1.0037,0.01480,0.00696,-0.1033,0.3927,1.0000 4.750,1.0298,0.01501,0.00719,-0.1030,0.3823,1.0000 5.000,1.0554,0.01532,0.00742,-0.1027,0.3726,1.0000 5.250,1.0811,0.01558,0.00767,-0.1023,0.3634,1.0000 5.500,1.1069,0.01592,0.00796,-0.1020,0.3562,1.0000 5.750,1.1325,0.01617,0.00825,-0.1016,0.3482,1.0000 6.000,1.1575,0.01654,0.00853,-0.1012,0.3409,1.0000 6.250,1.1826,0.01677,0.00884,-0.1008,0.3323,1.0000 6.500,1.2066,0.01712,0.00911,-0.1002,0.3241,1.0000 6.750,1.2310,0.01735,0.00942,-0.0996,0.3148,1.0000 7.000,1.2545,0.01773,0.00973,-0.0990,0.3076,1.0000 7.250,1.2789,0.01799,0.01009,-0.0985,0.2995,1.0000 7.500,1.3014,0.01838,0.01042,-0.0977,0.2918,1.0000 7.750,1.3250,0.01865,0.01078,-0.0970,0.2826,1.0000 8.000,1.3466,0.01905,0.01115,-0.0961,0.2743,1.0000 8.250,1.3690,0.01938,0.01153,-0.0953,0.2643,1.0000 8.500,1.3902,0.01978,0.01195,-0.0944,0.2550,1.0000 8.750,1.4104,0.02022,0.01238,-0.0933,0.2455,1.0000 9.000,1.4311,0.02065,0.01284,-0.0923,0.2354,1.0000 9.250,1.4499,0.02116,0.01336,-0.0910,0.2257,1.0000 9.500,1.4679,0.02169,0.01390,-0.0896,0.2155,1.0000 9.750,1.4847,0.02223,0.01446,-0.0881,0.2054,1.0000 10.000,1.4988,0.02291,0.01512,-0.0862,0.1925,1.0000 10.250,1.5119,0.02369,0.01588,-0.0843,0.1795,1.0000 10.500,1.5236,0.02457,0.01673,-0.0823,0.1656,1.0000 10.750,1.5333,0.02561,0.01773,-0.0802,0.1502,1.0000 11.000,1.5399,0.02690,0.01896,-0.0780,0.1326,1.0000 11.250,1.5428,0.02851,0.02048,-0.0756,0.1132,1.0000 11.500,1.5441,0.03034,0.02227,-0.0733,0.0995,1.0000 11.750,1.5448,0.03233,0.02423,-0.0713,0.0902,1.0000 12.000,1.5472,0.03428,0.02623,-0.0696,0.0835,1.0000 12.250,1.5485,0.03644,0.02844,-0.0682,0.0776,1.0000 12.500,1.5527,0.03842,0.03051,-0.0670,0.0707,1.0000 12.750,1.5545,0.04073,0.03291,-0.0660,0.0597,1.0000 13.000,1.5470,0.04410,0.03625,-0.0651,0.0517,1.0000 13.250,1.5413,0.04746,0.03966,-0.0646,0.0493,1.0000 13.500,1.5357,0.05098,0.04325,-0.0644,0.0477,1.0000 13.750,1.5287,0.05479,0.04718,-0.0644,0.0468,1.0000 14.000,1.5202,0.05894,0.05146,-0.0646,0.0461,1.0000 14.250,1.5104,0.06341,0.05606,-0.0652,0.0456,1.0000 14.500,1.4988,0.06826,0.06106,-0.0660,0.0451,1.0000 14.750,1.4860,0.07346,0.06640,-0.0670,0.0447,1.0000 15.000,1.4721,0.07894,0.07202,-0.0683,0.0443,1.0000 15.250,1.4579,0.08459,0.07780,-0.0697,0.0440,1.0000 15.500,1.4435,0.09038,0.08373,-0.0713,0.0437,1.0000