Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-s831-nr-1000000-n5 Airfoil,s831-nr Reynolds number,1000000 Ncrit,5 Mach,0 Max Cl/Cd,147.467 Max Cl/Cd alpha,5 Url,http://airfoiltools.com/polar/csv?polar=xf-s831-nr-1000000-n5 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -12.750,0.1113,0.09292,0.08991,-0.1528,0.7477,0.0058 -12.500,0.1143,0.08944,0.08643,-0.1541,0.7458,0.0059 -12.250,0.1178,0.08623,0.08321,-0.1552,0.7436,0.0059 -12.000,0.1254,0.08408,0.08106,-0.1561,0.7413,0.0061 -11.750,0.1302,0.08129,0.07826,-0.1571,0.7390,0.0063 -11.500,0.1326,0.07784,0.07480,-0.1584,0.7370,0.0063 -11.000,0.1382,0.07136,0.06831,-0.1607,0.7332,0.0068 -10.750,0.1374,0.06733,0.06429,-0.1620,0.7314,0.0066 -10.500,0.1393,0.06399,0.06096,-0.1632,0.7294,0.0071 -10.250,0.1376,0.05991,0.05689,-0.1647,0.7274,0.0070 -10.000,0.1345,0.05569,0.05267,-0.1663,0.7253,0.0069 -9.750,0.1307,0.05138,0.04836,-0.1682,0.7233,0.0075 -9.500,0.1227,0.04643,0.04342,-0.1710,0.7211,0.0072 -7.000,-0.0129,0.01864,0.01350,-0.1632,0.7043,0.0036 -6.750,0.0053,0.01643,0.01097,-0.1620,0.7026,0.0035 -6.500,0.0267,0.01515,0.00948,-0.1613,0.7009,0.0035 -6.250,0.0490,0.01423,0.00840,-0.1607,0.6991,0.0035 -6.000,0.0712,0.01346,0.00750,-0.1601,0.6972,0.0035 -5.750,0.0934,0.01283,0.00677,-0.1595,0.6954,0.0035 -5.500,0.1160,0.01233,0.00618,-0.1590,0.6935,0.0035 -5.000,0.1625,0.01142,0.00514,-0.1584,0.6905,0.0035 -4.750,0.1872,0.01104,0.00471,-0.1583,0.6891,0.0035 -4.500,0.2124,0.01072,0.00435,-0.1583,0.6877,0.0036 -4.250,0.2381,0.01043,0.00401,-0.1585,0.6862,0.0036 -4.000,0.2642,0.01018,0.00373,-0.1586,0.6847,0.0036 -3.750,0.2905,0.00994,0.00344,-0.1589,0.6832,0.0038 -3.500,0.3171,0.00974,0.00320,-0.1591,0.6817,0.0039 -3.250,0.3439,0.00956,0.00298,-0.1594,0.6803,0.0046 -3.000,0.3708,0.00942,0.00282,-0.1597,0.6789,0.0060 -2.500,0.4255,0.00914,0.00260,-0.1605,0.6762,0.0233 -2.250,0.4532,0.00903,0.00252,-0.1610,0.6749,0.0309 -2.000,0.4810,0.00893,0.00246,-0.1615,0.6736,0.0423 -1.750,0.5088,0.00875,0.00239,-0.1621,0.6723,0.0796 -1.500,0.5400,0.00703,0.00208,-0.1652,0.6711,0.5827 -1.250,0.5682,0.00704,0.00209,-0.1656,0.6698,0.6044 -1.000,0.5963,0.00706,0.00211,-0.1661,0.6685,0.6177 -0.750,0.6242,0.00709,0.00213,-0.1665,0.6673,0.6249 -0.500,0.6521,0.00714,0.00216,-0.1669,0.6661,0.6347 -0.250,0.6798,0.00718,0.00219,-0.1672,0.6648,0.6395 0.000,0.7078,0.00724,0.00222,-0.1676,0.6636,0.6447 0.250,0.7358,0.00730,0.00225,-0.1681,0.6624,0.6471 0.500,0.7635,0.00733,0.00227,-0.1685,0.6614,0.6487 0.750,0.7909,0.00735,0.00231,-0.1688,0.6602,0.6506 1.000,0.8183,0.00739,0.00235,-0.1692,0.6589,0.6526 1.250,0.8457,0.00742,0.00240,-0.1695,0.6578,0.6546 1.500,0.8729,0.00747,0.00246,-0.1698,0.6566,0.6566 1.750,0.9001,0.00751,0.00251,-0.1701,0.6554,0.6586 2.000,0.9270,0.00757,0.00257,-0.1704,0.6542,0.6606 2.250,0.9536,0.00762,0.00263,-0.1705,0.6531,0.6625 2.750,1.0063,0.00774,0.00277,-0.1708,0.6506,0.6662 3.000,1.0331,0.00781,0.00285,-0.1711,0.6493,0.6682 3.250,1.0599,0.00788,0.00294,-0.1713,0.6481,0.6705 3.500,1.0852,0.00793,0.00304,-0.1713,0.6471,0.6729 3.750,1.1108,0.00799,0.00314,-0.1713,0.6461,0.6753 4.000,1.1362,0.00806,0.00324,-0.1713,0.6449,0.6775 4.250,1.1615,0.00813,0.00336,-0.1712,0.6437,0.6795 4.500,1.1866,0.00820,0.00348,-0.1711,0.6423,0.6816 4.750,1.2116,0.00828,0.00361,-0.1710,0.6409,0.6838 5.000,1.2343,0.00837,0.00374,-0.1704,0.6382,0.6862 5.250,1.2502,0.00849,0.00387,-0.1684,0.6314,0.6887 5.500,1.2616,0.00865,0.00403,-0.1654,0.6207,0.6914 5.750,1.2741,0.00886,0.00424,-0.1627,0.6082,0.6940 6.000,1.2892,0.00909,0.00448,-0.1606,0.5965,0.6965 6.250,1.3042,0.00935,0.00476,-0.1586,0.5855,0.6992 6.500,1.3183,0.00967,0.00508,-0.1564,0.5728,0.7020 6.750,1.3290,0.01010,0.00549,-0.1537,0.5564,0.7048 7.000,1.3302,0.01084,0.00614,-0.1492,0.5297,0.7076 7.250,1.3171,0.01217,0.00728,-0.1424,0.4892,0.7103 7.500,1.2971,0.01398,0.00889,-0.1348,0.4443,0.7132 7.750,1.2828,0.01582,0.01056,-0.1286,0.4057,0.7165 8.000,1.2691,0.01783,0.01240,-0.1229,0.3652,0.7199 8.250,1.2551,0.02005,0.01443,-0.1175,0.3239,0.7230 8.500,1.2524,0.02178,0.01605,-0.1140,0.2954,0.7258 8.750,1.2455,0.02384,0.01796,-0.1100,0.2599,0.7286 9.000,1.2422,0.02579,0.01977,-0.1067,0.2285,0.7315 9.250,1.2423,0.02759,0.02146,-0.1040,0.2007,0.7346 9.500,1.2444,0.02931,0.02307,-0.1015,0.1742,0.7379 10.000,1.2485,0.03292,0.02646,-0.0970,0.1220,0.7438 10.250,1.2555,0.03443,0.02791,-0.0954,0.1053,0.7472 10.500,1.2629,0.03594,0.02936,-0.0939,0.0888,0.7506 10.750,1.2728,0.03731,0.03070,-0.0927,0.0781,0.7538 11.250,1.2909,0.04022,0.03355,-0.0902,0.0551,0.7599 11.500,1.2987,0.04180,0.03509,-0.0890,0.0419,0.7634 11.750,1.3086,0.04325,0.03651,-0.0879,0.0341,0.7673 12.000,1.3167,0.04487,0.03810,-0.0868,0.0253,0.7708 12.250,1.3263,0.04639,0.03961,-0.0858,0.0188,0.7744 12.500,1.3361,0.04791,0.04114,-0.0849,0.0142,0.7783 12.750,1.3457,0.04948,0.04272,-0.0840,0.0106,0.7822 13.000,1.3573,0.05088,0.04416,-0.0834,0.0089,0.7859 13.250,1.3686,0.05231,0.04564,-0.0827,0.0074,0.7897 13.500,1.3784,0.05392,0.04729,-0.0820,0.0059,0.7941 13.750,1.3890,0.05547,0.04889,-0.0813,0.0046,0.7988 14.000,1.3996,0.05703,0.05049,-0.0807,0.0036,0.8033 14.250,1.4099,0.05864,0.05218,-0.0802,0.0030,0.8084 14.500,1.4194,0.06036,0.05396,-0.0796,0.0023,0.8137 14.750,1.4277,0.06218,0.05583,-0.0790,0.0014,0.8185 15.000,1.4369,0.06395,0.05768,-0.0784,0.0012,0.8243 15.250,1.4450,0.06589,0.05970,-0.0779,0.0009,0.8303 15.500,1.4535,0.06778,0.06167,-0.0774,0.0008,0.8368 15.750,1.4612,0.06979,0.06377,-0.0770,0.0007,0.8447 16.000,1.4689,0.07181,0.06589,-0.0766,0.0006,0.8539 16.250,1.4765,0.07382,0.06802,-0.0761,0.0006,0.8655 16.500,1.4823,0.07600,0.07033,-0.0757,0.0005,0.8832 16.750,1.4856,0.07797,0.07252,-0.0747,0.0005,1.0000 17.000,1.4916,0.08031,0.07494,-0.0745,0.0004,1.0000 17.250,1.4968,0.08279,0.07750,-0.0743,0.0004,1.0000 17.500,1.5015,0.08534,0.08013,-0.0742,0.0004,1.0000 17.750,1.5040,0.08823,0.08312,-0.0741,0.0003,1.0000 18.000,1.5063,0.09114,0.08613,-0.0741,0.0003,1.0000 18.250,1.5064,0.09440,0.08949,-0.0741,0.0003,1.0000 18.500,1.5073,0.09760,0.09280,-0.0743,0.0003,1.0000 18.750,1.5087,0.10075,0.09604,-0.0746,0.0003,1.0000 19.000,1.5046,0.10475,0.10017,-0.0750,0.0003,1.0000 19.250,1.5042,0.10825,0.10377,-0.0756,0.0003,1.0000