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HT12 (ht12-il)

HT12 - Drela HT12 airfoil


Airfoil ht12-il
Details Dat file Parser  
(ht12-il) HT12
Drela HT12 airfoil
Max thickness 5% at 18.6% chord.
Max camber 0% at 0% chord
Source UIUC Airfoil Coordinates Database
Source dat file
The dat file is in Selig format
HT12
     1.000020    0.001191
     0.993423    0.001393
     0.980225    0.001798
     0.964551    0.002278
     0.948134    0.002780
     0.931565    0.003286
     0.914968    0.003793
     0.898366    0.004299
     0.881764    0.004806
     0.865159    0.005312
     0.848556    0.005816
     0.831953    0.006320
     0.815348    0.006824
     0.798744    0.007327
     0.782140    0.007829
     0.765535    0.008330
     0.748931    0.008830
     0.732326    0.009329
     0.715722    0.009828
     0.699117    0.010325
     0.682513    0.010821
     0.665908    0.011314
     0.649303    0.011808
     0.632699    0.012301
     0.616095    0.012792
     0.599490    0.013281
     0.582887    0.013769
     0.566283    0.014255
     0.549680    0.014740
     0.533078    0.015223
     0.516479    0.015703
     0.499882    0.016182
     0.483286    0.016658
     0.466694    0.017218
     0.450102    0.017785
     0.433508    0.018355
     0.416912    0.018929
     0.400311    0.019504
     0.383704    0.020080
     0.367094    0.020655
     0.350490    0.021226
     0.333900    0.021786
     0.317329    0.022332
     0.300785    0.022857
     0.284271    0.023352
     0.267794    0.023810
     0.251359    0.024218
     0.234968    0.024564
     0.218625    0.024838
     0.202334    0.025024
     0.186098    0.025114
     0.169920    0.025090
     0.153812    0.024939
     0.137786    0.024646
     0.121867    0.024191
     0.106094    0.023553
     0.090528    0.022704
     0.075278    0.021606
     0.060558    0.020225
     0.046776    0.018534
     0.034610    0.016575
     0.024801    0.014519
     0.017492    0.012547
     0.012184    0.010726
     0.008276    0.009024
     0.005349    0.007390
     0.003156    0.005769
     0.001571    0.004128
     0.000546    0.002462
     0.000057    0.000808
     0.000001    0.000014
     0.000057   -0.000780
     0.000546   -0.002434
     0.001571   -0.004100
     0.003156   -0.005741
     0.005349   -0.007362
     0.008276   -0.008997
     0.012184   -0.010699
     0.017492   -0.012519
     0.024801   -0.014492
     0.034609   -0.016548
     0.046775   -0.018507
     0.060557   -0.020199
     0.075276   -0.021580
     0.090527   -0.022678
     0.106093   -0.023528
     0.121866   -0.024167
     0.137786   -0.024622
     0.153811   -0.024915
     0.169919   -0.025066
     0.186097   -0.025091
     0.202333   -0.025002
     0.218625   -0.024816
     0.234968   -0.024542
     0.251358   -0.024196
     0.267793   -0.023789
     0.284271   -0.023332
     0.300784   -0.022837
     0.317329   -0.022312
     0.333900   -0.021767
     0.350490   -0.021207
     0.367093   -0.020637
     0.383704   -0.020062
     0.400310   -0.019486
     0.416911   -0.018912
     0.433508   -0.018338
     0.450101   -0.017769
     0.466694   -0.017203
     0.483286   -0.016642
     0.499882   -0.016167
     0.516478   -0.015688
     0.533078   -0.015209
     0.549679   -0.014726
     0.566283   -0.014242
     0.582887   -0.013756
     0.599490   -0.013269
     0.616094   -0.012780
     0.632699   -0.012289
     0.649303   -0.011797
     0.665908   -0.011304
     0.682513   -0.010811
     0.699117   -0.010315
     0.715722   -0.009818
     0.732326   -0.009320
     0.748931   -0.008822
     0.765535   -0.008322
     0.782140   -0.007821
     0.798744   -0.007319
     0.815347   -0.006818
     0.831952   -0.006314
     0.848556   -0.005810
     0.865159   -0.005306
     0.881763   -0.004801
     0.898366   -0.004295
     0.914968   -0.003789
     0.931565   -0.003283
     0.948134   -0.002777
     0.964551   -0.002275
     0.980225   -0.001796
     0.993423   -0.001391
     1.000020   -0.001189
Dat file parser warnings
  • Line 2 - X value too large but included: 1.000020 0.001191
  • Line 142 - X value too large but included: 1.000020 -0.001189
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Lednicer format dat file
Selig format dat file

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Polars for HT12 (ht12-il)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   ht12-il50,000921.2 at α=2.75°Mach=0 Ncrit=9Xfoil predictionDetails
   ht12-il50,000520.3 at α=4°Mach=0 Ncrit=5Xfoil predictionDetails
   ht12-il100,000926.8 at α=2.25°Mach=0 Ncrit=9Xfoil predictionDetails
   ht12-il100,000526.8 at α=4.25°Mach=0 Ncrit=5Xfoil predictionDetails
   ht12-il200,000932.3 at α=3.25°Mach=0 Ncrit=9Xfoil predictionDetails
   ht12-il200,000535.1 at α=4.75°Mach=0 Ncrit=5Xfoil predictionDetails
   ht12-il500,000945.2 at α=4.5°Mach=0 Ncrit=9Xfoil predictionDetails
   ht12-il500,000550.2 at α=6°Mach=0 Ncrit=5Xfoil predictionDetails
   ht12-il1,000,000958.3 at α=5.75°Mach=0 Ncrit=9Xfoil predictionDetails
   ht12-il1,000,000564.7 at α=6.25°Mach=0 Ncrit=5Xfoil predictionDetails
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