Xfoil polar. Reynolds number fixed. Mach number fixed Polar key,xf-naca644421-il-500000-n5 Airfoil,naca644421-il Reynolds number,500000 Ncrit,5 Mach,0 Max Cl/Cd,93.2 Max Cl/Cd alpha,7.25 Url,http://airfoiltools.com/polar/csv?polar=xf-naca644421-il-500000-n5 Alpha,Cl,Cd,Cdp,Cm,Top_Xtr,Bot_Xtr -19.750,-0.9590,0.09120,0.08641,-0.0639,1.0000,0.0248 -19.500,-0.9599,0.08776,0.08288,-0.0654,1.0000,0.0251 -19.250,-0.9590,0.08461,0.07964,-0.0667,1.0000,0.0253 -19.000,-0.9584,0.08151,0.07648,-0.0679,1.0000,0.0255 -18.750,-0.9583,0.07841,0.07333,-0.0690,1.0000,0.0258 -18.500,-0.9572,0.07548,0.07036,-0.0700,1.0000,0.0260 -18.250,-0.9556,0.07261,0.06745,-0.0710,1.0000,0.0263 -18.000,-0.9523,0.07002,0.06480,-0.0719,1.0000,0.0265 -17.750,-0.9492,0.06741,0.06214,-0.0727,1.0000,0.0268 -17.500,-0.9451,0.06501,0.05969,-0.0733,1.0000,0.0271 -17.250,-0.9410,0.06262,0.05725,-0.0740,1.0000,0.0274 -17.000,-0.9353,0.06045,0.05503,-0.0745,1.0000,0.0277 -16.750,-0.9295,0.05831,0.05284,-0.0749,1.0000,0.0281 -16.500,-0.9230,0.05630,0.05076,-0.0753,1.0000,0.0285 -16.250,-0.9162,0.05436,0.04877,-0.0756,1.0000,0.0289 -16.000,-0.9091,0.05247,0.04682,-0.0758,1.0000,0.0291 -15.750,-0.9039,0.05045,0.04479,-0.0760,1.0000,0.0296 -15.500,-0.8983,0.04850,0.04281,-0.0762,1.0000,0.0299 -15.000,-0.8599,0.04435,0.03859,-0.0815,0.9560,0.0310 -14.750,-0.8208,0.04207,0.03620,-0.0885,0.9371,0.0317 -14.500,-0.7842,0.04016,0.03415,-0.0942,0.9135,0.0325 -14.250,-0.7646,0.03867,0.03250,-0.0961,0.8879,0.0331 -14.000,-0.7547,0.03724,0.03095,-0.0962,0.8669,0.0337 -13.750,-0.7465,0.03588,0.02951,-0.0958,0.8506,0.0344 -13.500,-0.7374,0.03463,0.02817,-0.0953,0.8370,0.0351 -13.000,-0.7180,0.03231,0.02568,-0.0941,0.8125,0.0365 -12.750,-0.7076,0.03126,0.02452,-0.0934,0.8023,0.0372 -12.500,-0.6973,0.03018,0.02338,-0.0928,0.7928,0.0379 -12.250,-0.6888,0.02903,0.02217,-0.0920,0.7837,0.0388 -12.000,-0.6787,0.02797,0.02107,-0.0912,0.7754,0.0398 -11.750,-0.6683,0.02696,0.02000,-0.0905,0.7674,0.0407 -11.500,-0.6571,0.02603,0.01900,-0.0896,0.7603,0.0418 -11.250,-0.6455,0.02509,0.01801,-0.0888,0.7528,0.0429 -11.000,-0.6355,0.02412,0.01701,-0.0879,0.7454,0.0446 -10.750,-0.6240,0.02324,0.01608,-0.0869,0.7382,0.0461 -10.500,-0.6119,0.02240,0.01519,-0.0860,0.7309,0.0477 -10.250,-0.6012,0.02153,0.01428,-0.0849,0.7237,0.0497 -10.000,-0.5894,0.02071,0.01343,-0.0839,0.7174,0.0519 -9.750,-0.5771,0.01995,0.01262,-0.0828,0.7106,0.0544 -9.500,-0.5660,0.01916,0.01181,-0.0815,0.7043,0.0574 -9.250,-0.5538,0.01844,0.01105,-0.0803,0.6986,0.0611 -9.000,-0.5424,0.01769,0.01030,-0.0790,0.6924,0.0651 -8.750,-0.5309,0.01701,0.00960,-0.0775,0.6863,0.0696 -8.500,-0.5201,0.01635,0.00891,-0.0759,0.6808,0.0750 -8.250,-0.5109,0.01570,0.00827,-0.0739,0.6751,0.0805 -8.000,-0.5044,0.01521,0.00776,-0.0713,0.6692,0.0863 -7.750,-0.4911,0.01477,0.00729,-0.0697,0.6637,0.0944 -7.500,-0.4749,0.01432,0.00687,-0.0684,0.6588,0.1050 -7.250,-0.4569,0.01389,0.00647,-0.0674,0.6534,0.1177 -7.000,-0.4383,0.01344,0.00607,-0.0665,0.6480,0.1340 -6.750,-0.4189,0.01300,0.00568,-0.0657,0.6431,0.1549 -6.500,-0.3985,0.01248,0.00528,-0.0651,0.6383,0.1822 -6.250,-0.3779,0.01194,0.00487,-0.0646,0.6329,0.2167 -6.000,-0.3569,0.01136,0.00443,-0.0642,0.6277,0.2601 -5.750,-0.3359,0.01068,0.00397,-0.0638,0.6231,0.3166 -5.500,-0.3128,0.01006,0.00361,-0.0637,0.6185,0.3759 -5.250,-0.2864,0.00980,0.00350,-0.0639,0.6138,0.4230 -5.000,-0.2582,0.00973,0.00344,-0.0641,0.6092,0.4462 -4.500,-0.2005,0.00969,0.00333,-0.0647,0.6012,0.4692 -4.250,-0.1714,0.00966,0.00327,-0.0651,0.5971,0.4757 -4.000,-0.1425,0.00964,0.00323,-0.0654,0.5929,0.4828 -3.750,-0.1135,0.00967,0.00320,-0.0657,0.5890,0.4922 -3.500,-0.0847,0.00970,0.00323,-0.0659,0.5855,0.5032 -3.250,-0.0551,0.00974,0.00321,-0.0664,0.5821,0.5097 -3.000,-0.0259,0.00969,0.00317,-0.0667,0.5785,0.5127 -2.750,0.0032,0.00968,0.00313,-0.0671,0.5749,0.5150 -2.500,0.0322,0.00968,0.00310,-0.0674,0.5715,0.5172 -2.250,0.0612,0.00970,0.00307,-0.0677,0.5684,0.5196 -2.000,0.0906,0.00970,0.00305,-0.0681,0.5656,0.5224 -1.750,0.1201,0.00971,0.00303,-0.0685,0.5627,0.5251 -1.500,0.1496,0.00972,0.00301,-0.0689,0.5597,0.5273 -1.250,0.1788,0.00973,0.00299,-0.0693,0.5566,0.5290 -1.000,0.2077,0.00973,0.00297,-0.0696,0.5535,0.5309 -0.750,0.2366,0.00975,0.00298,-0.0699,0.5506,0.5327 -0.500,0.2656,0.00978,0.00299,-0.0703,0.5482,0.5347 -0.250,0.2950,0.00978,0.00301,-0.0707,0.5460,0.5368 0.000,0.3243,0.00980,0.00303,-0.0711,0.5437,0.5392 0.250,0.3535,0.00983,0.00306,-0.0714,0.5413,0.5417 0.500,0.3827,0.00986,0.00309,-0.0718,0.5390,0.5440 0.750,0.4118,0.00991,0.00312,-0.0722,0.5368,0.5460 1.250,0.4695,0.01000,0.00320,-0.0728,0.5327,0.5504 1.500,0.4983,0.01006,0.00327,-0.0731,0.5307,0.5529 1.750,0.5274,0.01010,0.00334,-0.0735,0.5290,0.5555 2.000,0.5564,0.01013,0.00341,-0.0739,0.5271,0.5583 2.250,0.5854,0.01018,0.00349,-0.0742,0.5250,0.5612 2.500,0.6143,0.01024,0.00357,-0.0746,0.5231,0.5641 2.750,0.6431,0.01031,0.00365,-0.0749,0.5212,0.5669 3.000,0.6716,0.01036,0.00374,-0.0752,0.5188,0.5698 3.250,0.6999,0.01043,0.00383,-0.0754,0.5161,0.5731 3.500,0.7280,0.01052,0.00392,-0.0756,0.5133,0.5765 3.750,0.7564,0.01061,0.00404,-0.0759,0.5113,0.5803 4.000,0.7849,0.01067,0.00416,-0.0762,0.5094,0.5843 4.250,0.8133,0.01075,0.00429,-0.0765,0.5073,0.5879 4.500,0.8413,0.01081,0.00442,-0.0767,0.5051,0.5919 4.750,0.8693,0.01089,0.00455,-0.0769,0.5027,0.5961 5.000,0.8966,0.01098,0.00467,-0.0769,0.4992,0.6004 5.250,0.9230,0.01111,0.00478,-0.0768,0.4941,0.6047 5.500,0.9495,0.01115,0.00491,-0.0768,0.4888,0.6087 5.750,0.9753,0.01122,0.00504,-0.0766,0.4826,0.6132 6.000,0.9995,0.01135,0.00516,-0.0761,0.4751,0.6180 6.250,1.0249,0.01143,0.00531,-0.0758,0.4678,0.6230 6.500,1.0495,0.01157,0.00547,-0.0754,0.4619,0.6276 6.750,1.0739,0.01170,0.00565,-0.0750,0.4563,0.6325 7.000,1.0976,0.01182,0.00585,-0.0745,0.4478,0.6379 7.250,1.1184,0.01200,0.00604,-0.0734,0.4353,0.6434 7.750,1.1372,0.01271,0.00661,-0.0674,0.3819,0.6537 8.000,1.1339,0.01353,0.00729,-0.0626,0.3514,0.6595 8.250,1.1316,0.01451,0.00815,-0.0583,0.3243,0.6653 8.500,1.1311,0.01555,0.00910,-0.0547,0.2984,0.6707 8.750,1.1276,0.01683,0.01029,-0.0509,0.2721,0.6771 9.000,1.1245,0.01824,0.01162,-0.0476,0.2467,0.6837 9.250,1.1228,0.01972,0.01302,-0.0447,0.2258,0.6900 9.500,1.1218,0.02126,0.01452,-0.0421,0.2060,0.6965 9.750,1.1216,0.02287,0.01608,-0.0398,0.1878,0.7037 10.250,1.1239,0.02618,0.01934,-0.0360,0.1573,0.7168 10.500,1.1243,0.02799,0.02113,-0.0343,0.1424,0.7238 11.000,1.1282,0.03162,0.02473,-0.0315,0.1185,0.7374 11.250,1.1316,0.03342,0.02653,-0.0303,0.1090,0.7450 11.500,1.1354,0.03529,0.02839,-0.0293,0.0998,0.7520 11.750,1.1400,0.03710,0.03023,-0.0284,0.0915,0.7597 12.000,1.1444,0.03901,0.03214,-0.0276,0.0834,0.7678 12.250,1.1486,0.04098,0.03413,-0.0269,0.0762,0.7755 12.750,1.1596,0.04481,0.03801,-0.0258,0.0642,0.7932 13.000,1.1658,0.04670,0.03994,-0.0253,0.0586,0.8038 13.250,1.1719,0.04866,0.04194,-0.0249,0.0547,0.8139 13.500,1.1782,0.05060,0.04393,-0.0245,0.0505,0.8258 13.750,1.1844,0.05256,0.04595,-0.0242,0.0468,0.8387 14.000,1.1903,0.05453,0.04798,-0.0238,0.0441,0.8537 14.250,1.1959,0.05641,0.04996,-0.0232,0.0413,0.8747 14.500,1.2000,0.05838,0.05205,-0.0226,0.0389,0.9144 15.000,1.2162,0.06273,0.05650,-0.0235,0.0347,1.0000 15.250,1.2242,0.06486,0.05867,-0.0238,0.0331,1.0000 15.500,1.2314,0.06709,0.06093,-0.0241,0.0317,1.0000 16.000,1.2445,0.07183,0.06574,-0.0248,0.0293,1.0000 16.250,1.2510,0.07425,0.06820,-0.0252,0.0282,1.0000 16.500,1.2563,0.07685,0.07084,-0.0257,0.0272,1.0000 16.750,1.2619,0.07941,0.07343,-0.0263,0.0264,1.0000 17.000,1.2677,0.08199,0.07608,-0.0269,0.0256,1.0000 17.250,1.2734,0.08463,0.07877,-0.0275,0.0248,1.0000 17.500,1.2783,0.08736,0.08155,-0.0282,0.0240,1.0000 17.750,1.2815,0.09039,0.08463,-0.0291,0.0234,1.0000 18.000,1.2857,0.09329,0.08758,-0.0299,0.0228,1.0000 18.250,1.2901,0.09619,0.09055,-0.0308,0.0223,1.0000 18.500,1.2938,0.09922,0.09365,-0.0318,0.0217,1.0000 18.750,1.2976,0.10225,0.09674,-0.0329,0.0211,1.0000 19.000,1.2993,0.10563,0.10017,-0.0341,0.0206,1.0000 19.250,1.3009,0.10903,0.10363,-0.0354,0.0201,1.0000