Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-s1221-il-500000-n5 Airfoil,s1221-il Reynolds number,500000 Ncrit,5 Mach,0 Max Cl/Cd,109.966 Max Cl/Cd alpha,8.25 Url,http://airfoiltools.com/polar/csv?polar=xf-s1221-il-500000-n5 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -7.750,-0.2647,0.08401,0.08172,-0.0408,0.9886,0.0102 -7.500,-0.3482,0.05994,0.05762,-0.0529,0.9803,0.0097 -7.250,-0.3733,0.04314,0.04058,-0.0739,0.9627,0.0095 -6.750,-0.2691,0.02333,0.01939,-0.1199,0.9391,0.0096 -6.500,-0.2203,0.02024,0.01591,-0.1273,0.9245,0.0099 -6.250,-0.0596,0.01688,0.01171,-0.1577,0.8101,0.0105 -6.000,-0.0324,0.01645,0.01064,-0.1581,0.7090,0.0106 -5.750,-0.0048,0.01579,0.00966,-0.1586,0.6671,0.0107 -5.500,0.0238,0.01519,0.00880,-0.1591,0.6277,0.0108 -5.250,0.0528,0.01467,0.00801,-0.1596,0.5899,0.0110 -5.000,0.0827,0.01418,0.00731,-0.1603,0.5591,0.0112 -4.750,0.1133,0.01375,0.00668,-0.1611,0.5340,0.0114 -4.500,0.1444,0.01334,0.00611,-0.1619,0.5133,0.0116 -4.250,0.1757,0.01298,0.00560,-0.1627,0.4959,0.0120 -4.000,0.2070,0.01268,0.00516,-0.1635,0.4809,0.0123 -3.750,0.2389,0.01235,0.00470,-0.1644,0.4668,0.0127 -3.500,0.2706,0.01207,0.00431,-0.1652,0.4540,0.0132 -3.250,0.3017,0.01187,0.00402,-0.1658,0.4431,0.0138 -2.500,0.3938,0.01144,0.00332,-0.1672,0.4163,0.0174 -2.250,0.4245,0.01131,0.00313,-0.1676,0.4089,0.0199 -2.000,0.4555,0.01118,0.00296,-0.1681,0.4014,0.0301 -1.750,0.4885,0.01085,0.00277,-0.1693,0.3947,0.0860 -1.500,0.5230,0.01039,0.00264,-0.1710,0.3872,0.2082 -1.250,0.5526,0.01040,0.00270,-0.1712,0.3808,0.2554 -1.000,0.5818,0.01044,0.00277,-0.1713,0.3749,0.2825 -0.750,0.6106,0.01052,0.00281,-0.1712,0.3693,0.2967 -0.500,0.6395,0.01059,0.00283,-0.1712,0.3645,0.3033 -0.250,0.6684,0.01064,0.00283,-0.1711,0.3599,0.3068 0.000,0.6973,0.01070,0.00284,-0.1711,0.3550,0.3099 0.250,0.7261,0.01078,0.00287,-0.1711,0.3503,0.3135 0.500,0.7551,0.01084,0.00291,-0.1710,0.3461,0.3181 0.750,0.7839,0.01091,0.00295,-0.1710,0.3417,0.3227 1.000,0.8125,0.01100,0.00301,-0.1709,0.3378,0.3268 1.250,0.8411,0.01109,0.00308,-0.1708,0.3341,0.3317 1.500,0.8699,0.01117,0.00316,-0.1708,0.3309,0.3373 1.750,0.8985,0.01125,0.00323,-0.1707,0.3273,0.3429 2.000,0.9272,0.01134,0.00332,-0.1707,0.3237,0.3494 2.250,0.9556,0.01145,0.00343,-0.1706,0.3206,0.3569 2.500,0.9839,0.01158,0.00355,-0.1705,0.3177,0.3650 2.750,1.0124,0.01167,0.00367,-0.1705,0.3153,0.3750 3.000,1.0410,0.01176,0.00380,-0.1704,0.3125,0.3854 3.250,1.0694,0.01186,0.00393,-0.1704,0.3095,0.3965 3.500,1.0977,0.01198,0.00408,-0.1703,0.3067,0.4092 3.750,1.1258,0.01212,0.00424,-0.1702,0.3042,0.4231 4.000,1.1539,0.01228,0.00442,-0.1701,0.3017,0.4384 4.250,1.1822,0.01239,0.00460,-0.1701,0.2998,0.4557 4.500,1.2106,0.01249,0.00477,-0.1700,0.2975,0.4752 4.750,1.2390,0.01261,0.00497,-0.1700,0.2948,0.4980 5.000,1.2673,0.01273,0.00517,-0.1700,0.2923,0.5259 5.250,1.2955,0.01287,0.00539,-0.1700,0.2898,0.5579 5.500,1.3236,0.01303,0.00563,-0.1700,0.2870,0.5959 5.750,1.3521,0.01314,0.00589,-0.1700,0.2844,0.6479 6.000,1.3804,0.01318,0.00617,-0.1700,0.2816,0.7326 6.250,1.4073,0.01328,0.00641,-0.1696,0.2782,0.7907 6.500,1.4327,0.01339,0.00662,-0.1690,0.2745,0.8382 6.750,1.4521,0.01344,0.00678,-0.1670,0.2712,0.9137 7.000,1.4758,0.01357,0.00696,-0.1660,0.2684,1.0000 7.250,1.5031,0.01375,0.00719,-0.1658,0.2653,1.0000 7.500,1.5301,0.01395,0.00743,-0.1656,0.2618,1.0000 7.750,1.5567,0.01419,0.00768,-0.1653,0.2577,1.0000 8.000,1.5831,0.01445,0.00794,-0.1650,0.2536,1.0000 8.250,1.6099,0.01464,0.00818,-0.1647,0.2483,1.0000 8.500,1.6359,0.01491,0.00845,-0.1643,0.2421,1.0000 8.750,1.6619,0.01516,0.00873,-0.1640,0.2347,1.0000 9.000,1.6871,0.01550,0.00903,-0.1635,0.2251,1.0000 9.250,1.7125,0.01581,0.00937,-0.1631,0.2159,1.0000 9.500,1.7372,0.01620,0.00975,-0.1626,0.2066,1.0000 9.750,1.7612,0.01666,0.01018,-0.1620,0.1966,1.0000 10.000,1.7847,0.01716,0.01067,-0.1613,0.1848,1.0000 10.250,1.8069,0.01779,0.01124,-0.1605,0.1704,1.0000 10.500,1.8281,0.01853,0.01192,-0.1595,0.1549,1.0000 10.750,1.8486,0.01931,0.01266,-0.1585,0.1411,1.0000 11.000,1.8684,0.02014,0.01346,-0.1573,0.1284,1.0000 11.250,1.8871,0.02104,0.01432,-0.1561,0.1161,1.0000 11.500,1.9051,0.02197,0.01522,-0.1547,0.1051,1.0000 11.750,1.9227,0.02287,0.01613,-0.1532,0.0954,1.0000 12.000,1.9394,0.02380,0.01707,-0.1517,0.0872,1.0000 12.250,1.9540,0.02485,0.01813,-0.1498,0.0793,1.0000 12.500,1.9669,0.02596,0.01925,-0.1478,0.0718,1.0000 12.750,1.9774,0.02711,0.02043,-0.1453,0.0654,1.0000 13.250,1.9868,0.02967,0.02308,-0.1387,0.0557,1.0000 13.500,1.9884,0.03123,0.02470,-0.1353,0.0520,1.0000 13.750,1.9911,0.03278,0.02634,-0.1323,0.0491,1.0000 14.000,1.9906,0.03466,0.02830,-0.1294,0.0463,1.0000 14.250,1.9859,0.03703,0.03075,-0.1265,0.0439,1.0000 14.500,1.9821,0.03956,0.03341,-0.1244,0.0422,1.0000 14.750,1.9759,0.04264,0.03661,-0.1229,0.0406,1.0000 15.000,1.9651,0.04673,0.04083,-0.1224,0.0389,1.0000 15.250,1.9521,0.05179,0.04604,-0.1231,0.0380,1.0000 15.500,1.9342,0.05816,0.05258,-0.1248,0.0369,1.0000 16.000,1.8924,0.07292,0.06770,-0.1296,0.0358,1.0000 16.250,1.8688,0.08090,0.07585,-0.1322,0.0356,1.0000 16.500,1.8451,0.08895,0.08407,-0.1350,0.0353,1.0000