NREL's S821 Airfoil (s821-nr) Xfoil prediction polar at RE=1,000,000 Ncrit=5
| Details | Polar file |
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Airfoil: NREL's S821 Airfoil (s821-nr) Reynolds number: 1,000,000 Max Cl/Cd: 75.57 at α=5.5° Description: Mach=0 Ncrit=5 Source: Xfoil prediction Download polar: xf-s821-nr-1000000-n5.txt Download as CSV file: xf-s821-nr-1000000-n5.csv |
XFOIL Version 6.96
Calculated polar for: NREL's S821 Airfoil
1 1 Reynolds number fixed Mach number fixed
xtrf = 1.000 (top) 1.000 (bottom)
Mach = 0.000 Re = 1.000 e 6 Ncrit = 5.000
alpha CL CD CDp CM Top_Xtr Bot_Xtr
------ -------- --------- --------- -------- -------- --------
-17.500 -0.9083 0.10452 0.10118 -0.0580 0.9946 0.1577
-17.250 -0.9559 0.09523 0.09175 -0.0619 0.9942 0.1610
-17.000 -0.9924 0.08762 0.08400 -0.0652 0.9938 0.1629
-16.750 -0.9821 0.08591 0.08228 -0.0663 0.9934 0.1639
-16.500 -0.9773 0.08349 0.07985 -0.0677 0.9931 0.1649
-16.250 -0.9826 0.07987 0.07621 -0.0696 0.9927 0.1662
-16.000 -0.9799 0.07720 0.07351 -0.0711 0.9924 0.1671
-15.750 -0.9835 0.07377 0.07004 -0.0729 0.9921 0.1683
-15.500 -0.9860 0.07052 0.06673 -0.0747 0.9917 0.1694
-15.250 -0.9839 0.06778 0.06395 -0.0763 0.9914 0.1702
-15.000 -0.9878 0.06434 0.06044 -0.0783 0.9911 0.1712
-14.750 -0.9821 0.06189 0.05794 -0.0800 0.9907 0.1719
-14.250 -0.9742 0.05682 0.05277 -0.0833 0.9899 0.1734
-14.000 -0.9760 0.05492 0.05086 -0.0827 0.9888 0.1744
-13.750 -0.9792 0.05245 0.04838 -0.0830 0.9877 0.1754
-13.500 -0.9797 0.05010 0.04600 -0.0836 0.9866 0.1762
-13.250 -0.9759 0.04805 0.04392 -0.0844 0.9854 0.1770
-13.000 -0.9702 0.04554 0.04139 -0.0863 0.9837 0.1778
-12.750 -0.9547 0.04355 0.03936 -0.0888 0.9819 0.1786
-12.500 -0.9361 0.04149 0.03727 -0.0920 0.9801 0.1794
-12.250 -0.9177 0.03933 0.03506 -0.0954 0.9787 0.1801
-12.000 -0.8969 0.03758 0.03328 -0.0984 0.9775 0.1809
-11.750 -0.8765 0.03573 0.03139 -0.1016 0.9765 0.1816
-11.500 -0.8540 0.03401 0.02962 -0.1049 0.9756 0.1822
-11.250 -0.8504 0.03247 0.02805 -0.1046 0.9722 0.1827
-11.000 -0.8484 0.03080 0.02634 -0.1043 0.9681 0.1830
-10.750 -0.8328 0.02943 0.02493 -0.1056 0.9657 0.1833
-10.500 -0.8187 0.02758 0.02306 -0.1079 0.9634 0.1844
-10.250 -0.7989 0.02596 0.02141 -0.1106 0.9617 0.1852
-10.000 -0.7779 0.02422 0.01966 -0.1137 0.9603 0.1861
-9.750 -0.7868 0.02262 0.01803 -0.1113 0.9530 0.1867
-9.500 -0.7785 0.02109 0.01647 -0.1117 0.9476 0.1874
-9.250 -0.7586 0.01971 0.01506 -0.1136 0.9445 0.1881
-9.000 -0.7759 0.01814 0.01345 -0.1096 0.9315 0.1886
-8.750 -0.7495 0.01698 0.01226 -0.1121 0.9267 0.1894
-8.500 -0.7398 0.01581 0.01105 -0.1119 0.9140 0.1901
-8.000 -0.6570 0.01428 0.00945 -0.1205 0.8999 0.1918
-7.750 -0.6066 0.01372 0.00883 -0.1259 0.8895 0.1924
-7.500 -0.5642 0.01327 0.00827 -0.1296 0.8702 0.1931
-7.250 -0.5330 0.01296 0.00784 -0.1311 0.8459 0.1935
-7.000 -0.5072 0.01273 0.00749 -0.1314 0.8223 0.1939
-6.750 -0.4829 0.01254 0.00719 -0.1313 0.8003 0.1943
-6.500 -0.4584 0.01238 0.00693 -0.1312 0.7815 0.1946
-6.250 -0.4345 0.01215 0.00661 -0.1311 0.7625 0.1955
-6.000 -0.4091 0.01193 0.00633 -0.1311 0.7455 0.1964
-5.750 -0.3831 0.01174 0.00608 -0.1312 0.7306 0.1973
-5.500 -0.3573 0.01159 0.00586 -0.1312 0.7153 0.1982
-5.250 -0.3300 0.01143 0.00567 -0.1314 0.7013 0.1991
-5.000 -0.3030 0.01131 0.00550 -0.1314 0.6882 0.2001
-4.750 -0.2756 0.01119 0.00533 -0.1315 0.6745 0.2010
-4.500 -0.2475 0.01108 0.00518 -0.1317 0.6637 0.2018
-4.250 -0.2193 0.01098 0.00504 -0.1319 0.6523 0.2026
-4.000 -0.1911 0.01089 0.00491 -0.1321 0.6416 0.2034
-3.750 -0.1626 0.01081 0.00478 -0.1322 0.6294 0.2041
-3.500 -0.1343 0.01075 0.00467 -0.1324 0.6186 0.2048
-3.250 -0.1052 0.01067 0.00456 -0.1326 0.6085 0.2054
-3.000 -0.0768 0.01063 0.00447 -0.1327 0.5987 0.2060
-2.750 -0.0472 0.01056 0.00438 -0.1330 0.5902 0.2064
-2.500 -0.0182 0.01048 0.00426 -0.1332 0.5803 0.2075
-2.250 0.0112 0.01039 0.00416 -0.1335 0.5713 0.2088
-2.000 0.0406 0.01032 0.00407 -0.1337 0.5611 0.2102
-1.750 0.0696 0.01028 0.00399 -0.1339 0.5517 0.2116
-1.500 0.0996 0.01021 0.00392 -0.1342 0.5440 0.2130
-1.250 0.1289 0.01017 0.00387 -0.1343 0.5354 0.2143
-1.000 0.1583 0.01014 0.00382 -0.1345 0.5278 0.2154
-0.750 0.1881 0.01011 0.00378 -0.1347 0.5199 0.2165
-0.500 0.2170 0.01012 0.00374 -0.1347 0.5106 0.2176
-0.250 0.2466 0.01010 0.00371 -0.1349 0.5033 0.2185
0.000 0.2762 0.01009 0.00369 -0.1350 0.4959 0.2193
0.250 0.3055 0.01008 0.00366 -0.1351 0.4881 0.2212
0.500 0.3353 0.01005 0.00363 -0.1353 0.4815 0.2231
0.750 0.3650 0.01003 0.00362 -0.1354 0.4739 0.2249
1.000 0.3940 0.01005 0.00362 -0.1354 0.4660 0.2268
1.250 0.4236 0.01005 0.00363 -0.1355 0.4601 0.2288
1.500 0.4530 0.01007 0.00364 -0.1355 0.4525 0.2306
1.750 0.4809 0.01015 0.00367 -0.1353 0.4418 0.2321
2.000 0.5103 0.01016 0.00368 -0.1353 0.4327 0.2342
2.250 0.5384 0.01023 0.00372 -0.1351 0.4217 0.2368
2.500 0.5674 0.01026 0.00375 -0.1351 0.4125 0.2393
2.750 0.5954 0.01034 0.00380 -0.1348 0.4023 0.2417
3.000 0.6240 0.01039 0.00385 -0.1346 0.3943 0.2440
3.250 0.6520 0.01048 0.00392 -0.1343 0.3845 0.2459
3.500 0.6797 0.01057 0.00398 -0.1340 0.3743 0.2484
3.750 0.7074 0.01066 0.00406 -0.1337 0.3632 0.2515
4.000 0.7349 0.01075 0.00415 -0.1333 0.3543 0.2546
4.250 0.7619 0.01085 0.00423 -0.1328 0.3441 0.2576
4.500 0.7880 0.01098 0.00433 -0.1322 0.3340 0.2601
4.750 0.8134 0.01113 0.00444 -0.1314 0.3209 0.2628
5.000 0.8392 0.01127 0.00456 -0.1307 0.3077 0.2670
5.250 0.8636 0.01147 0.00472 -0.1298 0.2915 0.2707
5.500 0.8864 0.01173 0.00490 -0.1286 0.2715 0.2739
5.750 0.9077 0.01208 0.00513 -0.1271 0.2487 0.2763
6.000 0.9283 0.01246 0.00541 -0.1256 0.2258 0.2791
6.250 0.9495 0.01284 0.00570 -0.1242 0.2045 0.2829
6.500 0.9706 0.01323 0.00601 -0.1228 0.1856 0.2865
6.750 0.9916 0.01362 0.00632 -0.1214 0.1696 0.2898
7.000 1.0115 0.01404 0.00666 -0.1198 0.1538 0.2926
7.250 1.0308 0.01448 0.00703 -0.1181 0.1382 0.2955
7.500 1.0507 0.01491 0.00739 -0.1166 0.1243 0.2997
7.750 1.0710 0.01531 0.00776 -0.1151 0.1132 0.3040
8.000 1.0910 0.01571 0.00812 -0.1135 0.1050 0.3082
8.250 1.1106 0.01611 0.00850 -0.1120 0.0974 0.3113
8.500 1.1305 0.01650 0.00888 -0.1105 0.0904 0.3157
8.750 1.1503 0.01692 0.00929 -0.1089 0.0844 0.3202
9.000 1.1689 0.01737 0.00973 -0.1073 0.0790 0.3242
9.250 1.1872 0.01783 0.01018 -0.1056 0.0737 0.3277
9.500 1.2052 0.01832 0.01066 -0.1039 0.0687 0.3307
9.750 1.2225 0.01886 0.01119 -0.1022 0.0636 0.3356
10.000 1.2389 0.01942 0.01176 -0.1004 0.0592 0.3406
10.250 1.2558 0.01999 0.01233 -0.0987 0.0551 0.3455
10.500 1.2715 0.02062 0.01296 -0.0968 0.0516 0.3491
10.750 1.2870 0.02127 0.01363 -0.0951 0.0484 0.3545
11.000 1.3027 0.02194 0.01432 -0.0934 0.0456 0.3602
11.250 1.3166 0.02271 0.01511 -0.0916 0.0429 0.3652
11.500 1.3313 0.02346 0.01588 -0.0899 0.0407 0.3693
11.750 1.3444 0.02434 0.01678 -0.0881 0.0384 0.3748
12.000 1.3578 0.02523 0.01771 -0.0865 0.0364 0.3803
12.250 1.3700 0.02622 0.01872 -0.0849 0.0344 0.3852
12.500 1.3818 0.02727 0.01980 -0.0832 0.0328 0.3895
12.750 1.3931 0.02840 0.02096 -0.0817 0.0310 0.3944
13.000 1.4039 0.02962 0.02223 -0.0803 0.0296 0.4004
13.250 1.4145 0.03089 0.02355 -0.0789 0.0282 0.4055
13.500 1.4239 0.03231 0.02499 -0.0776 0.0269 0.4100
13.750 1.4331 0.03379 0.02651 -0.0763 0.0257 0.4140
14.000 1.4422 0.03536 0.02814 -0.0753 0.0246 0.4208
14.250 1.4504 0.03706 0.02989 -0.0743 0.0236 0.4268
14.500 1.4577 0.03888 0.03176 -0.0733 0.0227 0.4318
14.750 1.4654 0.04074 0.03366 -0.0725 0.0219 0.4357
15.000 1.4723 0.04274 0.03573 -0.0718 0.0211 0.4414
15.250 1.4786 0.04487 0.03791 -0.0712 0.0203 0.4478
15.500 1.4836 0.04718 0.04028 -0.0708 0.0196 0.4540
15.750 1.4888 0.04954 0.04270 -0.0704 0.0191 0.4589
16.000 1.4943 0.05194 0.04517 -0.0702 0.0185 0.4650
16.250 1.4988 0.05452 0.04782 -0.0700 0.0180 0.4711
16.500 1.5019 0.05733 0.05070 -0.0700 0.0175 0.4771
16.750 1.5045 0.06024 0.05367 -0.0702 0.0170 0.4823
17.000 1.5068 0.06328 0.05678 -0.0704 0.0165 0.4890
17.250 1.5092 0.06640 0.05999 -0.0708 0.0162 0.4961
17.500 1.5120 0.06950 0.06317 -0.0712 0.0159 0.5026
17.750 1.5134 0.07282 0.06655 -0.0718 0.0155 0.5076
18.000 1.5140 0.07637 0.07020 -0.0726 0.0152 0.5149
18.250 1.5152 0.07986 0.07376 -0.0733 0.0149 0.5229
18.500 1.5142 0.08374 0.07772 -0.0744 0.0145 0.5293
18.750 1.5129 0.08771 0.08177 -0.0755 0.0143 0.5361
19.000 1.5121 0.09164 0.08579 -0.0767 0.0140 0.5435
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