Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-s819-nr-1000000 Airfoil,s819-nr Reynolds number,1000000 Ncrit,9 Mach,0 Max Cl/Cd,93.3831 Max Cl/Cd alpha,7.75 Url,http://airfoiltools.com/polar/csv?polar=xf-s819-nr-1000000 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -18.750,-0.6659,0.15136,0.14928,-0.0295,1.0000,0.0063 -18.500,-0.6827,0.14402,0.14186,-0.0331,1.0000,0.0062 -18.250,-0.7008,0.13689,0.13463,-0.0366,1.0000,0.0062 -18.000,-0.7177,0.13033,0.12798,-0.0398,1.0000,0.0061 -17.750,-0.7339,0.12417,0.12173,-0.0427,1.0000,0.0061 -17.500,-0.7504,0.11821,0.11566,-0.0453,1.0000,0.0061 -17.250,-0.7649,0.11287,0.11023,-0.0476,1.0000,0.0061 -17.000,-0.7807,0.10751,0.10477,-0.0498,1.0000,0.0061 -16.750,-0.7945,0.10262,0.09978,-0.0517,1.0000,0.0061 -16.500,-0.8077,0.09800,0.09506,-0.0533,1.0000,0.0061 -16.250,-0.8205,0.09364,0.09060,-0.0547,1.0000,0.0061 -16.000,-0.8333,0.08942,0.08627,-0.0559,1.0000,0.0062 -15.750,-0.8442,0.08560,0.08236,-0.0569,1.0000,0.0062 -15.500,-0.8548,0.08192,0.07857,-0.0576,1.0000,0.0062 -15.250,-0.8636,0.07859,0.07515,-0.0580,1.0000,0.0062 -15.000,-0.8710,0.07554,0.07200,-0.0583,1.0000,0.0062 -14.750,-0.8776,0.07258,0.06895,-0.0583,1.0000,0.0063 -14.500,-0.8823,0.06981,0.06608,-0.0582,1.0000,0.0064 -14.250,-0.8855,0.06718,0.06336,-0.0578,1.0000,0.0064 -14.000,-0.8862,0.06480,0.06089,-0.0573,1.0000,0.0066 -13.750,-0.8870,0.06249,0.05850,-0.0567,1.0000,0.0066 -13.500,-0.8864,0.06044,0.05635,-0.0560,1.0000,0.0067 -13.250,-0.8843,0.05861,0.05442,-0.0550,1.0000,0.0069 -13.000,-0.8816,0.05687,0.05259,-0.0540,1.0000,0.0069 -12.750,-0.8908,0.05531,0.05090,-0.0528,1.0000,0.0071 -12.500,-0.8853,0.05359,0.04911,-0.0517,1.0000,0.0071 -12.250,-0.8865,0.05200,0.04742,-0.0504,1.0000,0.0071 -12.000,-0.8858,0.05053,0.04587,-0.0490,1.0000,0.0071 -11.750,-0.8833,0.04904,0.04429,-0.0475,1.0000,0.0072 -11.500,-0.8728,0.04762,0.04282,-0.0462,1.0000,0.0072 -11.250,-0.8662,0.04623,0.04135,-0.0446,1.0000,0.0072 -11.000,-0.8526,0.04495,0.04003,-0.0433,1.0000,0.0072 -10.750,-0.7241,0.04648,0.04179,-0.0414,1.0000,0.0076 -10.500,-0.7008,0.04642,0.04178,-0.0395,1.0000,0.0078 -10.250,-0.6813,0.04626,0.04165,-0.0376,1.0000,0.0079 -10.000,-0.6634,0.04612,0.04153,-0.0356,1.0000,0.0082 -9.750,-0.6454,0.04582,0.04124,-0.0341,0.9999,0.0084 -9.500,-0.6138,0.04553,0.04095,-0.0348,0.9990,0.0089 -9.250,-0.5897,0.04373,0.03906,-0.0376,0.9975,0.0096 -9.000,-0.5681,0.04156,0.03679,-0.0412,0.9958,0.0098 -8.750,-0.5200,0.04485,0.04027,-0.0372,0.9953,0.0104 -8.500,-0.4902,0.04446,0.03995,-0.0387,0.9940,0.0107 -8.250,-0.4677,0.04358,0.03910,-0.0397,0.9916,0.0111 -8.000,-0.4452,0.04218,0.03772,-0.0418,0.9891,0.0118 -7.750,-0.4193,0.04015,0.03560,-0.0452,0.9869,0.0129 -7.500,-0.3996,0.03845,0.03394,-0.0479,0.9847,0.0138 -7.250,-0.3921,0.03568,0.03118,-0.0502,0.9802,0.0143 -7.000,-0.3809,0.03256,0.02804,-0.0537,0.9753,0.0148 -6.750,-0.3517,0.03066,0.02608,-0.0577,0.9726,0.0175 -6.500,-0.3592,0.02537,0.02069,-0.0623,0.9607,0.0181 -6.250,-0.3622,0.02106,0.01627,-0.0654,0.9410,0.0187 -6.000,-0.3625,0.01793,0.01296,-0.0667,0.9013,0.0192 -5.750,-0.3637,0.01587,0.01058,-0.0666,0.8502,0.0201 -5.250,-0.3428,0.01383,0.00798,-0.0637,0.7927,0.0086 -5.000,-0.3250,0.01313,0.00706,-0.0629,0.7717,0.0076 -4.750,-0.3037,0.01262,0.00641,-0.0625,0.7529,0.0075 -4.500,-0.2807,0.01220,0.00586,-0.0622,0.7354,0.0076 -4.250,-0.2565,0.01185,0.00542,-0.0620,0.7196,0.0084 -4.000,-0.2312,0.01161,0.00509,-0.0620,0.7044,0.0093 -3.500,-0.1791,0.01117,0.00448,-0.0620,0.6760,0.0114 -3.250,-0.1521,0.01102,0.00426,-0.0622,0.6633,0.0140 -3.000,-0.1347,0.00879,0.00272,-0.0627,0.6518,0.2702 -2.750,-0.1073,0.00862,0.00268,-0.0630,0.6396,0.3016 -2.500,-0.0790,0.00865,0.00269,-0.0633,0.6269,0.3116 -2.250,-0.0503,0.00867,0.00271,-0.0636,0.6153,0.3165 -2.000,-0.0217,0.00871,0.00269,-0.0639,0.6045,0.3187 -1.500,0.0355,0.00873,0.00261,-0.0644,0.5829,0.3202 -1.250,0.0638,0.00869,0.00254,-0.0647,0.5723,0.3220 -0.750,0.1209,0.00864,0.00245,-0.0653,0.5511,0.3260 -0.500,0.1494,0.00865,0.00243,-0.0656,0.5416,0.3277 -0.250,0.1781,0.00865,0.00242,-0.0659,0.5317,0.3294 0.000,0.2068,0.00867,0.00241,-0.0662,0.5226,0.3312 0.500,0.2640,0.00873,0.00242,-0.0668,0.5034,0.3343 0.750,0.2924,0.00876,0.00242,-0.0670,0.4941,0.3363 1.000,0.3211,0.00875,0.00242,-0.0674,0.4851,0.3395 1.250,0.3496,0.00877,0.00245,-0.0676,0.4767,0.3422 1.500,0.3782,0.00881,0.00248,-0.0679,0.4680,0.3449 1.750,0.4067,0.00886,0.00252,-0.0682,0.4599,0.3476 2.000,0.4350,0.00893,0.00257,-0.0684,0.4511,0.3496 2.250,0.4636,0.00894,0.00260,-0.0687,0.4429,0.3536 2.500,0.4917,0.00899,0.00266,-0.0689,0.4346,0.3574 2.750,0.5203,0.00904,0.00272,-0.0691,0.4274,0.3608 3.000,0.5484,0.00912,0.00279,-0.0693,0.4197,0.3639 3.250,0.5768,0.00917,0.00286,-0.0695,0.4125,0.3678 3.500,0.6048,0.00923,0.00294,-0.0697,0.4043,0.3720 3.750,0.6329,0.00930,0.00303,-0.0698,0.3959,0.3761 4.000,0.6603,0.00943,0.00312,-0.0699,0.3865,0.3794 4.250,0.6885,0.00948,0.00321,-0.0701,0.3786,0.3842 4.750,0.7439,0.00966,0.00343,-0.0703,0.3628,0.3932 5.000,0.7709,0.00980,0.00356,-0.0702,0.3550,0.3970 5.250,0.7989,0.00986,0.00367,-0.0704,0.3478,0.4020 5.750,0.8533,0.01010,0.00394,-0.0704,0.3326,0.4106 6.000,0.8801,0.01023,0.00409,-0.0704,0.3253,0.4158 6.250,0.9074,0.01033,0.00425,-0.0704,0.3185,0.4210 6.500,0.9339,0.01049,0.00441,-0.0702,0.3106,0.4255 6.750,0.9607,0.01061,0.00457,-0.0702,0.3031,0.4309 7.000,0.9867,0.01078,0.00476,-0.0700,0.2946,0.4365 7.250,1.0129,0.01094,0.00494,-0.0698,0.2854,0.4415 7.500,1.0381,0.01114,0.00516,-0.0695,0.2742,0.4474 7.750,1.0627,0.01138,0.00539,-0.0691,0.2603,0.4534 8.000,1.0862,0.01167,0.00564,-0.0685,0.2416,0.4587 8.250,1.1062,0.01215,0.00601,-0.0674,0.2120,0.4652 8.500,1.1215,0.01288,0.00654,-0.0656,0.1757,0.4712 8.750,1.1391,0.01345,0.00702,-0.0641,0.1524,0.4772 9.000,1.1547,0.01403,0.00753,-0.0623,0.1319,0.4842 9.250,1.1682,0.01458,0.00800,-0.0600,0.1134,0.4901 9.500,1.1819,0.01513,0.00851,-0.0579,0.0986,0.4971 9.750,1.1966,0.01568,0.00904,-0.0559,0.0870,0.5039 10.000,1.2093,0.01632,0.00964,-0.0538,0.0743,0.5106 10.250,1.2240,0.01688,0.01020,-0.0520,0.0669,0.5180 10.500,1.2363,0.01755,0.01085,-0.0499,0.0583,0.5249 10.750,1.2498,0.01817,0.01149,-0.0481,0.0517,0.5329 11.000,1.2624,0.01884,0.01217,-0.0462,0.0462,0.5402 11.250,1.2752,0.01951,0.01289,-0.0444,0.0423,0.5488 11.500,1.2860,0.02031,0.01371,-0.0425,0.0375,0.5569 11.750,1.2956,0.02119,0.01462,-0.0406,0.0333,0.5657 12.000,1.3056,0.02209,0.01558,-0.0388,0.0299,0.5753 12.250,1.3134,0.02316,0.01669,-0.0370,0.0265,0.5860 12.500,1.3219,0.02426,0.01785,-0.0355,0.0239,0.5965 12.750,1.3288,0.02552,0.01918,-0.0339,0.0216,0.6084 13.000,1.3349,0.02692,0.02065,-0.0326,0.0194,0.6209 13.250,1.3400,0.02848,0.02228,-0.0314,0.0173,0.6327 13.500,1.3442,0.03020,0.02408,-0.0303,0.0158,0.6448 13.750,1.3501,0.03190,0.02587,-0.0295,0.0147,0.6573 14.000,1.3542,0.03382,0.02790,-0.0289,0.0137,0.6707 14.250,1.3552,0.03612,0.03028,-0.0283,0.0123,0.6855 14.500,1.3593,0.03825,0.03252,-0.0280,0.0116,0.7010 14.750,1.3616,0.04062,0.03502,-0.0279,0.0111,0.7188 15.000,1.3619,0.04328,0.03781,-0.0279,0.0104,0.7387 15.250,1.3605,0.04623,0.04088,-0.0281,0.0097,0.7608 15.500,1.3610,0.04905,0.04386,-0.0284,0.0092,0.7896 15.750,1.3607,0.05188,0.04692,-0.0286,0.0088,0.8398 16.000,1.3548,0.05467,0.05003,-0.0281,0.0084,1.0000 16.250,1.3518,0.05825,0.05368,-0.0290,0.0079,1.0000 16.500,1.3478,0.06206,0.05756,-0.0300,0.0075,1.0000 16.750,1.3440,0.06595,0.06153,-0.0312,0.0070,1.0000 17.000,1.3416,0.06977,0.06543,-0.0325,0.0068,1.0000 17.250,1.3390,0.07368,0.06943,-0.0338,0.0064,1.0000 17.500,1.3345,0.07794,0.07378,-0.0354,0.0062,1.0000 17.750,1.3292,0.08241,0.07832,-0.0372,0.0058,1.0000 18.000,1.3228,0.08712,0.08311,-0.0391,0.0056,1.0000