Aerowerx
Well-Known Member
As [promised in another thread, here is the dat file for my modified Hepperle airfoil.
It started life as a MH46 11.4%. I increased the thickness to 20%, and increased the camber bit.
I like the MH46 because it seems to work over a wide range of Reynolds numbers, and can be used for both scale models and full size designs.
The modified one is intended as the center section of a flying wing, with 10 foot chord. This gives a thickness of 2 feet, and a 1 foot canopy bubble for a total of 3 feet.
Here is a comparison between the modified and original.
And the data...
MH46 T20
1.00000 0.00020
0.98910 -0.00130
0.97219 -0.00251
0.95426 -0.00280
0.93521 -0.00240
0.91511 -0.00137
0.89418 0.00027
0.87267 0.00255
0.85079 0.00551
0.82863 0.00924
0.80612 0.01377
0.78313 0.01915
0.75951 0.02537
0.73518 0.03239
0.71016 0.04014
0.68447 0.04858
0.65822 0.05763
0.63158 0.06714
0.60495 0.07682
0.57911 0.08617
0.55454 0.09470
0.53102 0.10222
0.50819 0.10874
0.48568 0.11435
0.46321 0.11914
0.44070 0.12321
0.41812 0.12658
0.39551 0.12926
0.37286 0.13125
0.35025 0.13257
0.32774 0.13323
0.30544 0.13321
0.28340 0.13253
0.26175 0.13120
0.24062 0.12928
0.22017 0.12678
0.20054 0.12374
0.18184 0.12021
0.16417 0.11627
0.14763 0.11198
0.13229 0.10743
0.11816 0.10267
0.10521 0.09776
0.09341 0.09278
0.08269 0.08776
0.07299 0.08275
0.06421 0.07778
0.05630 0.07286
0.04915 0.06801
0.04272 0.06324
0.03691 0.05857
0.03169 0.05398
0.02699 0.04949
0.02277 0.04510
0.01899 0.04079
0.01564 0.03657
0.01267 0.03242
0.01003 0.02836
0.00771 0.02440
0.00564 0.02055
0.00377 0.01683
0.00219 0.01319
0.00110 0.00956
0.00014 0.00603
-0.00025 0.00252
-0.00020 -0.00099
0.00012 -0.00453
0.00105 -0.00803
0.00266 -0.01141
0.00490 -0.01454
0.00774 -0.01743
0.01082 -0.02035
0.01422 -0.02324
0.01795 -0.02610
0.02207 -0.02889
0.02661 -0.03161
0.03159 -0.03427
0.03705 -0.03690
0.04304 -0.03953
0.04959 -0.04216
0.05680 -0.04479
0.06474 -0.04740
0.07352 -0.04998
0.08325 -0.05252
0.09406 -0.05498
0.10609 -0.05733
0.11951 -0.05954
0.13448 -0.06155
0.15115 -0.06334
0.16965 -0.06486
0.19000 -0.06607
0.21218 -0.06693
0.23609 -0.06741
0.26150 -0.06751
0.28814 -0.06723
0.31581 -0.06656
0.34434 -0.06553
0.37357 -0.06418
0.40337 -0.06252
0.43365 -0.06060
0.46432 -0.05845
0.49526 -0.05614
0.52620 -0.05368
0.55711 -0.05102
0.58809 -0.04811
0.61937 -0.04497
0.65099 -0.04166
0.68292 -0.03822
0.71504 -0.03472
0.74715 -0.03118
0.77914 -0.02760
0.81089 -0.02399
0.84211 -0.02043
0.87229 -0.01700
0.90082 -0.01377
0.92704 -0.01075
0.95049 -0.00795
0.97104 -0.00527
0.98902 -0.00224
1.00000 0.00020
It started life as a MH46 11.4%. I increased the thickness to 20%, and increased the camber bit.
I like the MH46 because it seems to work over a wide range of Reynolds numbers, and can be used for both scale models and full size designs.
The modified one is intended as the center section of a flying wing, with 10 foot chord. This gives a thickness of 2 feet, and a 1 foot canopy bubble for a total of 3 feet.
Here is a comparison between the modified and original.
And the data...
MH46 T20
1.00000 0.00020
0.98910 -0.00130
0.97219 -0.00251
0.95426 -0.00280
0.93521 -0.00240
0.91511 -0.00137
0.89418 0.00027
0.87267 0.00255
0.85079 0.00551
0.82863 0.00924
0.80612 0.01377
0.78313 0.01915
0.75951 0.02537
0.73518 0.03239
0.71016 0.04014
0.68447 0.04858
0.65822 0.05763
0.63158 0.06714
0.60495 0.07682
0.57911 0.08617
0.55454 0.09470
0.53102 0.10222
0.50819 0.10874
0.48568 0.11435
0.46321 0.11914
0.44070 0.12321
0.41812 0.12658
0.39551 0.12926
0.37286 0.13125
0.35025 0.13257
0.32774 0.13323
0.30544 0.13321
0.28340 0.13253
0.26175 0.13120
0.24062 0.12928
0.22017 0.12678
0.20054 0.12374
0.18184 0.12021
0.16417 0.11627
0.14763 0.11198
0.13229 0.10743
0.11816 0.10267
0.10521 0.09776
0.09341 0.09278
0.08269 0.08776
0.07299 0.08275
0.06421 0.07778
0.05630 0.07286
0.04915 0.06801
0.04272 0.06324
0.03691 0.05857
0.03169 0.05398
0.02699 0.04949
0.02277 0.04510
0.01899 0.04079
0.01564 0.03657
0.01267 0.03242
0.01003 0.02836
0.00771 0.02440
0.00564 0.02055
0.00377 0.01683
0.00219 0.01319
0.00110 0.00956
0.00014 0.00603
-0.00025 0.00252
-0.00020 -0.00099
0.00012 -0.00453
0.00105 -0.00803
0.00266 -0.01141
0.00490 -0.01454
0.00774 -0.01743
0.01082 -0.02035
0.01422 -0.02324
0.01795 -0.02610
0.02207 -0.02889
0.02661 -0.03161
0.03159 -0.03427
0.03705 -0.03690
0.04304 -0.03953
0.04959 -0.04216
0.05680 -0.04479
0.06474 -0.04740
0.07352 -0.04998
0.08325 -0.05252
0.09406 -0.05498
0.10609 -0.05733
0.11951 -0.05954
0.13448 -0.06155
0.15115 -0.06334
0.16965 -0.06486
0.19000 -0.06607
0.21218 -0.06693
0.23609 -0.06741
0.26150 -0.06751
0.28814 -0.06723
0.31581 -0.06656
0.34434 -0.06553
0.37357 -0.06418
0.40337 -0.06252
0.43365 -0.06060
0.46432 -0.05845
0.49526 -0.05614
0.52620 -0.05368
0.55711 -0.05102
0.58809 -0.04811
0.61937 -0.04497
0.65099 -0.04166
0.68292 -0.03822
0.71504 -0.03472
0.74715 -0.03118
0.77914 -0.02760
0.81089 -0.02399
0.84211 -0.02043
0.87229 -0.01700
0.90082 -0.01377
0.92704 -0.01075
0.95049 -0.00795
0.97104 -0.00527
0.98902 -0.00224
1.00000 0.00020