NACA 2421 (naca2421-il) Xfoil prediction polar at RE=500,000 Ncrit=9
| Details | Polar file |
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Airfoil: NACA 2421 (naca2421-il) Reynolds number: 500,000 Max Cl/Cd: 75.51 at α=7.75° Description: Mach=0 Ncrit=9 Source: Xfoil prediction Download polar: xf-naca2421-il-500000.txt Download as CSV file: xf-naca2421-il-500000.csv |
XFOIL Version 6.96
Calculated polar for: NACA 2421
1 1 Reynolds number fixed Mach number fixed
xtrf = 1.000 (top) 1.000 (bottom)
Mach = 0.000 Re = 0.500 e 6 Ncrit = 9.000
alpha CL CD CDp CM Top_Xtr Bot_Xtr
------ -------- --------- --------- -------- -------- --------
-19.750 -1.1138 0.08316 0.07818 -0.0688 1.0000 0.0633
-19.500 -1.1181 0.07931 0.07423 -0.0705 1.0000 0.0640
-19.250 -1.1223 0.07550 0.07030 -0.0722 1.0000 0.0647
-19.000 -1.1214 0.07272 0.06750 -0.0730 1.0000 0.0655
-18.750 -1.1202 0.06996 0.06474 -0.0739 1.0000 0.0663
-18.500 -1.1211 0.06681 0.06155 -0.0751 1.0000 0.0671
-18.250 -1.1219 0.06368 0.05837 -0.0762 1.0000 0.0679
-18.000 -1.1221 0.06066 0.05529 -0.0773 1.0000 0.0688
-17.750 -1.1223 0.05767 0.05221 -0.0783 1.0000 0.0698
-17.500 -1.1220 0.05474 0.04918 -0.0793 1.0000 0.0707
-17.250 -1.1219 0.05203 0.04641 -0.0799 1.0000 0.0716
-17.000 -1.1224 0.04938 0.04376 -0.0803 1.0000 0.0726
-16.750 -1.1215 0.04682 0.04118 -0.0808 1.0000 0.0736
-16.500 -1.1193 0.04445 0.03875 -0.0811 1.0000 0.0746
-16.250 -1.1165 0.04223 0.03647 -0.0813 1.0000 0.0757
-16.000 -1.1127 0.04017 0.03433 -0.0814 1.0000 0.0768
-15.750 -1.1075 0.03831 0.03237 -0.0812 1.0000 0.0777
-15.500 -1.1095 0.03608 0.03015 -0.0805 1.0000 0.0789
-15.250 -1.1092 0.03418 0.02823 -0.0797 1.0000 0.0800
-15.000 -1.1074 0.03257 0.02660 -0.0785 1.0000 0.0812
-14.750 -1.1056 0.03118 0.02515 -0.0770 1.0000 0.0825
-14.500 -1.1041 0.02995 0.02387 -0.0750 1.0000 0.0838
-14.250 -1.1032 0.02892 0.02276 -0.0726 1.0000 0.0848
-14.000 -1.1140 0.02756 0.02140 -0.0688 1.0000 0.0860
-13.750 -1.1244 0.02652 0.02035 -0.0645 1.0000 0.0870
-13.500 -1.1354 0.02568 0.01949 -0.0598 1.0000 0.0880
-13.250 -1.1376 0.02491 0.01869 -0.0563 0.9995 0.0893
-13.000 -1.1109 0.02407 0.01779 -0.0577 0.9972 0.0915
-12.750 -1.0864 0.02308 0.01678 -0.0589 0.9945 0.0939
-12.500 -1.0597 0.02221 0.01592 -0.0604 0.9923 0.0965
-12.250 -1.0327 0.02157 0.01523 -0.0614 0.9892 0.0993
-12.000 -1.0076 0.02082 0.01447 -0.0621 0.9852 0.1021
-11.750 -0.9793 0.02010 0.01377 -0.0633 0.9821 0.1053
-11.500 -0.9455 0.01958 0.01321 -0.0652 0.9801 0.1090
-11.250 -0.9128 0.01884 0.01250 -0.0672 0.9783 0.1130
-11.000 -0.8882 0.01833 0.01199 -0.0671 0.9722 0.1167
-10.750 -0.8555 0.01775 0.01140 -0.0687 0.9689 0.1210
-10.500 -0.8230 0.01717 0.01086 -0.0702 0.9661 0.1257
-10.250 -0.7888 0.01672 0.01037 -0.0718 0.9638 0.1304
-10.000 -0.7721 0.01625 0.00994 -0.0700 0.9555 0.1346
-9.750 -0.7434 0.01587 0.00954 -0.0704 0.9509 0.1395
-9.500 -0.7173 0.01539 0.00907 -0.0703 0.9463 0.1443
-9.250 -0.6983 0.01506 0.00875 -0.0687 0.9376 0.1488
-9.000 -0.6715 0.01477 0.00840 -0.0684 0.9321 0.1533
-8.750 -0.6521 0.01434 0.00802 -0.0670 0.9240 0.1585
-8.500 -0.6288 0.01405 0.00770 -0.0661 0.9163 0.1636
-8.250 -0.6043 0.01372 0.00736 -0.0654 0.9099 0.1687
-8.000 -0.5833 0.01341 0.00708 -0.0641 0.9005 0.1742
-7.750 -0.5572 0.01318 0.00679 -0.0636 0.8932 0.1797
-7.500 -0.5357 0.01286 0.00651 -0.0625 0.8839 0.1861
-7.250 -0.5107 0.01262 0.00625 -0.0618 0.8756 0.1927
-7.000 -0.4867 0.01236 0.00601 -0.0611 0.8669 0.2001
-6.750 -0.4619 0.01215 0.00580 -0.0604 0.8573 0.2080
-6.500 -0.4370 0.01191 0.00557 -0.0598 0.8485 0.2169
-6.000 -0.3862 0.01154 0.00519 -0.0586 0.8293 0.2362
-5.750 -0.3609 0.01139 0.00505 -0.0580 0.8185 0.2458
-5.500 -0.3348 0.01124 0.00487 -0.0576 0.8089 0.2560
-5.250 -0.3093 0.01109 0.00474 -0.0570 0.7978 0.2653
-5.000 -0.2831 0.01098 0.00458 -0.0566 0.7874 0.2750
-4.750 -0.2573 0.01085 0.00446 -0.0560 0.7758 0.2837
-4.500 -0.2313 0.01075 0.00433 -0.0555 0.7647 0.2932
-4.250 -0.2051 0.01066 0.00422 -0.0551 0.7527 0.3020
-4.000 -0.1793 0.01055 0.00410 -0.0546 0.7420 0.3120
-3.750 -0.1527 0.01048 0.00401 -0.0542 0.7305 0.3209
-3.500 -0.1271 0.01037 0.00391 -0.0536 0.7198 0.3310
-3.000 -0.0750 0.01021 0.00373 -0.0527 0.6977 0.3510
-2.500 -0.0229 0.01007 0.00359 -0.0517 0.6764 0.3743
-2.250 0.0032 0.01000 0.00353 -0.0513 0.6654 0.3875
-2.000 0.0292 0.00995 0.00348 -0.0508 0.6551 0.4023
-1.750 0.0546 0.00986 0.00343 -0.0502 0.6440 0.4193
-1.500 0.0801 0.00980 0.00340 -0.0496 0.6337 0.4379
-1.250 0.1057 0.00973 0.00338 -0.0491 0.6233 0.4576
-1.000 0.1313 0.00970 0.00336 -0.0485 0.6139 0.4778
-0.750 0.1572 0.00964 0.00337 -0.0481 0.6042 0.4987
-0.500 0.1827 0.00965 0.00337 -0.0475 0.5949 0.5196
-0.250 0.2091 0.00961 0.00340 -0.0470 0.5862 0.5395
0.000 0.2347 0.00963 0.00342 -0.0465 0.5767 0.5599
0.250 0.2605 0.00962 0.00346 -0.0459 0.5674 0.5815
0.500 0.2857 0.00962 0.00349 -0.0453 0.5574 0.6020
0.750 0.3113 0.00964 0.00354 -0.0447 0.5484 0.6198
1.000 0.3372 0.00965 0.00358 -0.0442 0.5391 0.6366
1.250 0.3626 0.00973 0.00364 -0.0436 0.5302 0.6535
1.500 0.3888 0.00971 0.00370 -0.0431 0.5215 0.6708
1.750 0.4139 0.00977 0.00376 -0.0424 0.5125 0.6871
2.000 0.4399 0.00981 0.00384 -0.0419 0.5047 0.7039
2.250 0.4657 0.00985 0.00392 -0.0414 0.4966 0.7217
2.750 0.5161 0.00994 0.00412 -0.0400 0.4809 0.7598
3.000 0.5407 0.01002 0.00422 -0.0393 0.4724 0.7790
3.250 0.5656 0.01011 0.00435 -0.0385 0.4648 0.7979
3.500 0.5906 0.01018 0.00447 -0.0378 0.4568 0.8170
3.750 0.6139 0.01032 0.00461 -0.0367 0.4486 0.8364
4.000 0.6385 0.01039 0.00476 -0.0359 0.4409 0.8552
4.250 0.6617 0.01053 0.00492 -0.0348 0.4327 0.8730
4.500 0.6846 0.01069 0.00509 -0.0336 0.4250 0.8898
4.750 0.7075 0.01083 0.00525 -0.0324 0.4168 0.9064
5.000 0.7281 0.01106 0.00544 -0.0308 0.4086 0.9229
5.250 0.7523 0.01123 0.00565 -0.0298 0.4005 0.9380
5.500 0.7767 0.01150 0.00589 -0.0289 0.3916 0.9526
5.750 0.8056 0.01176 0.00615 -0.0291 0.3832 0.9647
6.000 0.8391 0.01208 0.00642 -0.0303 0.3740 0.9727
6.250 0.8739 0.01239 0.00670 -0.0319 0.3654 0.9789
6.500 0.9138 0.01272 0.00699 -0.0347 0.3557 0.9821
6.750 0.9512 0.01305 0.00729 -0.0369 0.3464 0.9864
7.000 0.9854 0.01338 0.00758 -0.0385 0.3368 0.9914
7.250 1.0231 0.01370 0.00787 -0.0410 0.3269 0.9942
7.500 1.0586 0.01406 0.00818 -0.0430 0.3161 0.9978
7.750 1.0813 0.01432 0.00842 -0.0425 0.3071 1.0000
8.000 1.0744 0.01444 0.00852 -0.0361 0.3004 1.0000
8.250 1.0727 0.01466 0.00871 -0.0308 0.2932 1.0000
8.500 1.0794 0.01489 0.00893 -0.0271 0.2845 1.0000
8.750 1.0865 0.01527 0.00925 -0.0236 0.2754 1.0000
9.000 1.0986 0.01566 0.00961 -0.0211 0.2654 1.0000
9.250 1.1117 0.01613 0.01004 -0.0190 0.2562 1.0000
9.500 1.1247 0.01668 0.01054 -0.0169 0.2474 1.0000
9.750 1.1396 0.01722 0.01105 -0.0153 0.2396 1.0000
10.000 1.1529 0.01787 0.01166 -0.0135 0.2321 1.0000
10.250 1.1676 0.01850 0.01228 -0.0120 0.2255 1.0000
10.500 1.1821 0.01917 0.01295 -0.0105 0.2189 1.0000
10.750 1.1937 0.02003 0.01376 -0.0088 0.2127 1.0000
11.000 1.2104 0.02065 0.01441 -0.0078 0.2071 1.0000
11.250 1.2228 0.02153 0.01527 -0.0063 0.2013 1.0000
11.500 1.2361 0.02240 0.01614 -0.0051 0.1959 1.0000
11.750 1.2510 0.02320 0.01696 -0.0041 0.1903 1.0000
12.000 1.2610 0.02432 0.01805 -0.0027 0.1848 1.0000
12.250 1.2756 0.02520 0.01896 -0.0018 0.1797 1.0000
12.500 1.2877 0.02626 0.02003 -0.0007 0.1742 1.0000
12.750 1.2968 0.02756 0.02132 0.0004 0.1691 1.0000
13.000 1.3101 0.02860 0.02240 0.0012 0.1639 1.0000
13.250 1.3179 0.03007 0.02385 0.0022 0.1588 1.0000
13.500 1.3286 0.03138 0.02520 0.0030 0.1541 1.0000
13.750 1.3375 0.03286 0.02669 0.0038 0.1491 1.0000
14.000 1.3430 0.03466 0.02849 0.0047 0.1446 1.0000
14.250 1.3525 0.03618 0.03005 0.0052 0.1400 1.0000
14.500 1.3565 0.03820 0.03207 0.0059 0.1356 1.0000
14.750 1.3631 0.04005 0.03395 0.0065 0.1316 1.0000
15.000 1.3683 0.04207 0.03601 0.0069 0.1274 1.0000
15.250 1.3679 0.04465 0.03858 0.0074 0.1236 1.0000
15.500 1.3751 0.04655 0.04054 0.0077 0.1200 1.0000
15.750 1.3770 0.04903 0.04304 0.0079 0.1164 1.0000
16.000 1.3748 0.05196 0.04599 0.0081 0.1132 1.0000
16.250 1.3799 0.05418 0.04828 0.0082 0.1098 1.0000
16.500 1.3793 0.05703 0.05116 0.0082 0.1066 1.0000
16.750 1.3753 0.06029 0.05444 0.0081 0.1036 1.0000
17.000 1.3781 0.06287 0.05709 0.0080 0.1005 1.0000
17.250 1.3758 0.06604 0.06029 0.0077 0.0976 1.0000
17.500 1.3701 0.06962 0.06390 0.0074 0.0950 1.0000
17.750 1.3713 0.07247 0.06683 0.0070 0.0922 1.0000
18.000 1.3680 0.07587 0.07026 0.0065 0.0896 1.0000
18.250 1.3595 0.07992 0.07432 0.0059 0.0874 1.0000
18.500 1.3607 0.08284 0.07733 0.0053 0.0851 1.0000
18.750 1.3573 0.08635 0.08090 0.0046 0.0829 1.0000
19.000 1.3506 0.09032 0.08488 0.0037 0.0810 1.0000
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