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 = 1.000 e 6 Ncrit = 5.000 alpha CL CD CDp CM Top_Xtr Bot_Xtr ------ -------- --------- --------- -------- -------- -------- -19.750 -1.2239 0.07174 0.06721 -0.0695 1.0000 0.0449 -19.500 -1.2384 0.06678 0.06217 -0.0715 1.0000 0.0454 -19.250 -1.2503 0.06225 0.05754 -0.0732 1.0000 0.0459 -19.000 -1.2594 0.05812 0.05333 -0.0747 1.0000 0.0464 -18.750 -1.2663 0.05433 0.04946 -0.0760 1.0000 0.0469 -18.500 -1.2710 0.05088 0.04594 -0.0771 1.0000 0.0475 -18.250 -1.2734 0.04773 0.04271 -0.0780 1.0000 0.0480 -18.000 -1.2740 0.04487 0.03977 -0.0788 1.0000 0.0485 -17.750 -1.2738 0.04217 0.03701 -0.0793 1.0000 0.0489 -17.500 -1.2746 0.03944 0.03422 -0.0798 1.0000 0.0495 -17.250 -1.2735 0.03700 0.03172 -0.0801 1.0000 0.0502 -17.000 -1.2707 0.03482 0.02949 -0.0801 1.0000 0.0508 -16.750 -1.2663 0.03288 0.02750 -0.0800 1.0000 0.0515 -16.500 -1.2607 0.03115 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0.00253 -0.0481 0.5178 0.2927 -1.250 0.1018 0.00908 0.00249 -0.0478 0.5048 0.3076 -1.000 0.1295 0.00906 0.00248 -0.0476 0.4977 0.3155 -0.500 0.1835 0.00905 0.00247 -0.0471 0.4802 0.3355 -0.250 0.2101 0.00907 0.00248 -0.0468 0.4702 0.3454 0.000 0.2373 0.00905 0.00249 -0.0466 0.4626 0.3574 0.250 0.2640 0.00903 0.00249 -0.0463 0.4539 0.3721 0.500 0.2904 0.00903 0.00251 -0.0459 0.4459 0.3886 0.750 0.3170 0.00900 0.00253 -0.0456 0.4372 0.4098 1.000 0.3425 0.00900 0.00257 -0.0451 0.4268 0.4337 1.250 0.3691 0.00896 0.00260 -0.0448 0.4190 0.4574 1.500 0.3953 0.00897 0.00265 -0.0444 0.4111 0.4777 1.750 0.4218 0.00899 0.00270 -0.0441 0.4038 0.4962 2.000 0.4483 0.00903 0.00276 -0.0438 0.3951 0.5137 2.250 0.4742 0.00908 0.00283 -0.0433 0.3871 0.5302 2.500 0.5010 0.00911 0.00289 -0.0431 0.3805 0.5440 2.750 0.5271 0.00920 0.00297 -0.0427 0.3727 0.5576 3.000 0.5532 0.00926 0.00306 -0.0423 0.3657 0.5714 3.250 0.5794 0.00933 0.00314 -0.0419 0.3580 0.5843 3.500 0.6046 0.00943 0.00325 -0.0414 0.3503 0.6001 3.750 0.6308 0.00948 0.00334 -0.0410 0.3443 0.6148 4.000 0.6562 0.00960 0.00346 -0.0405 0.3362 0.6284 4.250 0.6811 0.00970 0.00358 -0.0400 0.3287 0.6428 4.500 0.7061 0.00981 0.00370 -0.0394 0.3200 0.6565 4.750 0.7301 0.00995 0.00384 -0.0387 0.3114 0.6732 5.000 0.7548 0.01003 0.00398 -0.0380 0.3039 0.6921 5.250 0.7775 0.01017 0.00414 -0.0370 0.2958 0.7110 5.500 0.8005 0.01026 0.00428 -0.0361 0.2891 0.7305 5.750 0.8213 0.01040 0.00445 -0.0347 0.2796 0.7530 6.000 0.8430 0.01052 0.00465 -0.0335 0.2706 0.7844 6.250 0.8636 0.01071 0.00490 -0.0322 0.2602 0.8196 6.500 0.8845 0.01090 0.00515 -0.0309 0.2492 0.8508 6.750 0.9047 0.01116 0.00542 -0.0295 0.2391 0.8733 7.000 0.9245 0.01145 0.00572 -0.0280 0.2296 0.8922 7.250 0.9451 0.01170 0.00599 -0.0267 0.2228 0.9101 7.500 0.9641 0.01201 0.00630 -0.0251 0.2153 0.9273 7.750 0.9839 0.01230 0.00660 -0.0237 0.2094 0.9440 8.000 1.0038 0.01265 0.00694 -0.0224 0.2019 0.9593 8.250 1.0270 0.01302 0.00729 -0.0219 0.1951 0.9721 8.500 1.0526 0.01339 0.00764 -0.0219 0.1887 0.9822 8.750 1.0780 0.01380 0.00802 -0.0220 0.1828 0.9915 9.000 1.1069 0.01417 0.00837 -0.0228 0.1775 0.9972 9.250 1.1258 0.01460 0.00877 -0.0217 0.1715 1.0000 9.500 1.1431 0.01498 0.00913 -0.0202 0.1668 1.0000 9.750 1.1597 0.01543 0.00956 -0.0187 0.1609 1.0000 10.000 1.1765 0.01593 0.01003 -0.0174 0.1553 1.0000 10.250 1.1930 0.01646 0.01054 -0.0160 0.1491 1.0000 10.500 1.2090 0.01705 0.01110 -0.0146 0.1433 1.0000 10.750 1.2248 0.01767 0.01170 -0.0133 0.1373 1.0000 11.000 1.2401 0.01835 0.01236 -0.0121 0.1319 1.0000 11.250 1.2555 0.01905 0.01304 -0.0108 0.1268 1.0000 11.500 1.2699 0.01982 0.01379 -0.0096 0.1223 1.0000 11.750 1.2853 0.02056 0.01454 -0.0085 0.1182 1.0000 12.000 1.2984 0.02146 0.01543 -0.0073 0.1140 1.0000 12.250 1.3130 0.02231 0.01628 -0.0063 0.1105 1.0000 12.500 1.3260 0.02327 0.01724 -0.0052 0.1065 1.0000 12.750 1.3380 0.02432 0.01829 -0.0041 0.1030 1.0000 13.000 1.3510 0.02534 0.01932 -0.0032 0.0996 1.0000 13.250 1.3613 0.02658 0.02056 -0.0021 0.0962 1.0000 13.500 1.3735 0.02773 0.02172 -0.0013 0.0935 1.0000 13.750 1.3844 0.02899 0.02300 -0.0004 0.0904 1.0000 14.000 1.3926 0.03049 0.02451 0.0005 0.0874 1.0000 14.250 1.4035 0.03183 0.02588 0.0012 0.0847 1.0000 14.500 1.4116 0.03344 0.02750 0.0019 0.0817 1.0000 14.750 1.4187 0.03517 0.02924 0.0026 0.0791 1.0000 15.000 1.4266 0.03685 0.03095 0.0031 0.0763 1.0000 15.250 1.4314 0.03885 0.03297 0.0037 0.0736 1.0000 15.500 1.4374 0.04081 0.03496 0.0042 0.0713 1.0000 15.750 1.4427 0.04286 0.03704 0.0046 0.0689 1.0000 16.000 1.4455 0.04517 0.03938 0.0049 0.0669 1.0000 16.250 1.4497 0.04742 0.04167 0.0052 0.0652 1.0000 16.500 1.4532 0.04974 0.04404 0.0053 0.0634 1.0000 16.750 1.4548 0.05231 0.04664 0.0055 0.0618 1.0000 17.000 1.4551 0.05507 0.04945 0.0055 0.0603 1.0000 17.250 1.4570 0.05766 0.05209 0.0055 0.0591 1.0000 17.500 1.4581 0.06037 0.05485 0.0054 0.0577 1.0000 17.750 1.4563 0.06347 0.05800 0.0052 0.0565 1.0000 18.000 1.4533 0.06673 0.06131 0.0049 0.0553 1.0000 18.250 1.4534 0.06963 0.06427 0.0046 0.0543 1.0000 18.500 1.4511 0.07288 0.06758 0.0042 0.0533 1.0000 18.750 1.4485 0.07617 0.07093 0.0037 0.0522 1.0000 19.000 1.4443 0.07970 0.07452 0.0031 0.0512 1.0000 19.250 1.4375 0.08358 0.07846 0.0024 0.0502 1.0000