Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-s1221-flap-il-500000-n5 Airfoil,s1221-flap-il Reynolds number,500000 Ncrit,5 Mach,0 Max Cl/Cd,106.527 Max Cl/Cd alpha,8 Url,http://airfoiltools.com/polar/csv?polar=xf-s1221-flap-il-500000-n5 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -8.750,-0.1580,0.08808,0.08566,-0.0638,0.9588,0.0112 -8.500,-0.1510,0.08320,0.08079,-0.0673,0.9557,0.0108 -8.000,-0.2552,0.03960,0.03671,-0.1062,0.9370,0.0097 -7.750,-0.1853,0.02548,0.02181,-0.1444,0.9312,0.0099 -7.500,-0.1345,0.02228,0.01832,-0.1541,0.9282,0.0102 -7.250,-0.0881,0.02020,0.01601,-0.1607,0.9247,0.0104 -7.000,-0.0485,0.01839,0.01395,-0.1650,0.9179,0.0105 -6.750,0.0020,0.01657,0.01187,-0.1711,0.9117,0.0106 -6.500,0.0513,0.01518,0.01027,-0.1764,0.9006,0.0107 -6.250,0.1278,0.01375,0.00854,-0.1873,0.8725,0.0110 -6.000,0.1775,0.01382,0.00761,-0.1921,0.6783,0.0112 -5.750,0.2055,0.01357,0.00706,-0.1925,0.6273,0.0114 -5.500,0.2350,0.01331,0.00653,-0.1931,0.5828,0.0117 -5.250,0.2659,0.01305,0.00604,-0.1940,0.5484,0.0120 -5.000,0.2974,0.01282,0.00561,-0.1949,0.5223,0.0123 -4.750,0.3307,0.01251,0.00514,-0.1963,0.5008,0.0127 -4.500,0.3635,0.01227,0.00475,-0.1975,0.4825,0.0133 -4.250,0.3954,0.01210,0.00446,-0.1983,0.4671,0.0138 -3.750,0.4582,0.01186,0.00399,-0.1997,0.4430,0.0157 -3.500,0.4898,0.01173,0.00377,-0.2005,0.4332,0.0174 -3.250,0.5210,0.01164,0.00359,-0.2010,0.4238,0.0194 -3.000,0.5527,0.01153,0.00343,-0.2017,0.4156,0.0265 -2.750,0.5868,0.01127,0.00326,-0.2032,0.4072,0.0711 -2.500,0.6238,0.01085,0.00310,-0.2055,0.3994,0.1830 -2.250,0.6546,0.01081,0.00318,-0.2061,0.3916,0.2495 -2.000,0.6831,0.01093,0.00325,-0.2060,0.3846,0.2749 -1.750,0.7120,0.01100,0.00331,-0.2059,0.3788,0.2906 -1.500,0.7408,0.01108,0.00335,-0.2059,0.3729,0.2985 -1.250,0.7694,0.01117,0.00338,-0.2058,0.3676,0.3032 -1.000,0.7982,0.01124,0.00340,-0.2058,0.3629,0.3067 -0.750,0.8268,0.01133,0.00343,-0.2057,0.3578,0.3097 -0.500,0.8554,0.01143,0.00349,-0.2056,0.3528,0.3132 -0.250,0.8841,0.01151,0.00355,-0.2056,0.3484,0.3177 0.000,0.9127,0.01160,0.00361,-0.2055,0.3439,0.3222 0.250,0.9410,0.01171,0.00369,-0.2054,0.3398,0.3263 0.500,0.9693,0.01183,0.00378,-0.2053,0.3360,0.3308 0.750,0.9978,0.01193,0.00388,-0.2052,0.3326,0.3361 1.000,1.0262,0.01203,0.00397,-0.2051,0.3289,0.3418 1.250,1.0544,0.01214,0.00408,-0.2049,0.3252,0.3476 1.500,1.0826,0.01227,0.00421,-0.2048,0.3220,0.3546 1.750,1.1104,0.01243,0.00435,-0.2046,0.3189,0.3623 2.000,1.1388,0.01254,0.00450,-0.2046,0.3165,0.3714 2.250,1.1670,0.01265,0.00464,-0.2044,0.3136,0.3809 2.500,1.1951,0.01278,0.00479,-0.2043,0.3105,0.3914 2.750,1.2229,0.01292,0.00496,-0.2041,0.3076,0.4023 3.250,1.2782,0.01328,0.00534,-0.2038,0.3025,0.4285 3.500,1.3062,0.01340,0.00553,-0.2036,0.3007,0.4435 3.750,1.3341,0.01354,0.00574,-0.2035,0.2983,0.4598 4.000,1.3619,0.01368,0.00594,-0.2033,0.2956,0.4785 4.250,1.3895,0.01384,0.00616,-0.2032,0.2930,0.4997 4.500,1.4170,0.01402,0.00641,-0.2030,0.2906,0.5230 4.750,1.4442,0.01423,0.00666,-0.2028,0.2879,0.5475 5.000,1.4716,0.01440,0.00692,-0.2026,0.2852,0.5742 5.250,1.4993,0.01454,0.00717,-0.2024,0.2824,0.6049 5.500,1.5267,0.01469,0.00744,-0.2022,0.2789,0.6409 5.750,1.5535,0.01488,0.00773,-0.2019,0.2750,0.6874 6.000,1.5793,0.01513,0.00804,-0.2014,0.2714,0.7275 6.250,1.6056,0.01532,0.00831,-0.2009,0.2687,0.7541 6.500,1.6319,0.01551,0.00857,-0.2005,0.2655,0.7715 6.750,1.6579,0.01573,0.00884,-0.2000,0.2617,0.7853 7.000,1.6835,0.01598,0.00912,-0.1995,0.2575,0.7985 7.250,1.7091,0.01620,0.00940,-0.1990,0.2531,0.8116 7.500,1.7348,0.01639,0.00968,-0.1985,0.2474,0.8264 8.000,1.7758,0.01667,0.01014,-0.1953,0.2334,1.0000 8.250,1.8001,0.01704,0.01049,-0.1946,0.2243,1.0000 8.500,1.8245,0.01740,0.01085,-0.1940,0.2154,1.0000 8.750,1.8482,0.01781,0.01126,-0.1932,0.2066,1.0000 9.000,1.8709,0.01831,0.01174,-0.1923,0.1963,1.0000 9.250,1.8927,0.01890,0.01229,-0.1913,0.1831,1.0000 9.500,1.9135,0.01958,0.01292,-0.1902,0.1683,1.0000 9.750,1.9331,0.02036,0.01364,-0.1888,0.1535,1.0000 10.000,1.9517,0.02121,0.01444,-0.1873,0.1400,1.0000 10.250,1.9690,0.02212,0.01532,-0.1856,0.1270,1.0000 10.500,1.9848,0.02311,0.01627,-0.1837,0.1148,1.0000 10.750,1.9988,0.02416,0.01729,-0.1814,0.1041,1.0000 11.000,2.0115,0.02511,0.01827,-0.1789,0.0954,1.0000 11.250,2.0222,0.02614,0.01931,-0.1761,0.0878,1.0000 11.500,2.0310,0.02731,0.02049,-0.1731,0.0803,1.0000 11.750,2.0393,0.02852,0.02172,-0.1701,0.0728,1.0000 12.000,2.0461,0.02985,0.02308,-0.1670,0.0664,1.0000 12.500,2.0565,0.03282,0.02615,-0.1608,0.0563,1.0000 12.750,2.0590,0.03457,0.02795,-0.1576,0.0523,1.0000 13.000,2.0615,0.03637,0.02984,-0.1547,0.0492,1.0000 13.250,2.0616,0.03844,0.03198,-0.1517,0.0458,1.0000 13.500,2.0588,0.04089,0.03452,-0.1488,0.0433,1.0000 13.750,2.0569,0.04338,0.03712,-0.1464,0.0411,1.0000 14.000,2.0531,0.04623,0.04009,-0.1442,0.0396,1.0000 14.250,2.0449,0.04981,0.04378,-0.1424,0.0380,1.0000 14.500,2.0316,0.05446,0.04856,-0.1415,0.0364,1.0000 14.750,2.0193,0.05967,0.05395,-0.1419,0.0357,1.0000 15.000,2.0054,0.06571,0.06018,-0.1432,0.0350,1.0000 15.250,1.9879,0.07279,0.06745,-0.1453,0.0349,1.0000 15.500,1.9658,0.08091,0.07576,-0.1479,0.0340,1.0000 15.750,1.9414,0.08948,0.08451,-0.1507,0.0336,1.0000 16.000,1.9160,0.09822,0.09342,-0.1537,0.0331,1.0000