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BELL 540 AIRFOIL (MODIFIED NACA 0012) (b540ols-il)

BELL 540 AIRFOIL (MODIFIED NACA 0012) - Bell AH-1 rotor blade airfoil (operational loads survey)


Airfoil b540ols-il
Details Dat file Parser  
(b540ols-il) BELL 540 AIRFOIL (MODIFIED NACA 0012)
Bell AH-1 rotor blade airfoil (operational loads survey)
Max thickness 9.7% at 22.1% chord.
Max camber 0% at 0% chord
Source UIUC Airfoil Coordinates Database
Source dat file
The dat file is in Lednicer format
 BELL 540 AIRFOIL (MODIFIED NACA 0012)
48.        48.

 0.        0.
  .00453    .01163
  .00862    .01569
  .01250    .01857
  .01628    .02087
  .02366    .02453
  .03092    .02743
  .03810    .02986
  .04524    .03195
  .05590    .03463
  .06652    .03689
  .08064    .03939
  .09121    .04098
  .10177    .04235
  .11231    .04353
  .12285    .04455
  .13339    .04543
  .15093    .04660
  .17548    .04773
  .20001    .04836
  .21402    .04851
  .22102    .04855
  .22452    .04855
  .23503    .04851
  .25253    .04832
  .28053    .04767
  .30152    .04696
  .32950    .04572
  .35048    .04461
  .38544    .04244
  .42036    .04015
  .45528    .03785
  .49020    .03556
  .52512    .03326
  .56003    .03097
  .59495    .02867
  .62987    .02638
  .66479    .02408
  .69970    .02179
  .73462    .01949
  .76954    .01720
  .80446    .01490
  .83938    .01261
  .87430    .01031
  .90921    .00801
  .94413    .00572
  .97905    .00342
 1.00000    .00205

 0.        0.
  .00453   -.01163
  .00862   -.01569
  .01250   -.01857
  .01628   -.02087
  .02366   -.02453
  .03092   -.02743
  .03810   -.02986
  .04524   -.03195
  .05590   -.03463
  .06652   -.03689
  .08064   -.03939
  .09121   -.04098
  .10177   -.04235
  .11231   -.04353
  .12285   -.04455
  .13339   -.04543
  .15093   -.04660
  .17548   -.04773
  .20001   -.04836
  .21402   -.04851
  .22102   -.04855
  .22452   -.04855
  .23503   -.04851
  .25253   -.04832
  .28053   -.04767
  .30152   -.04696
  .32950   -.04572
  .35048   -.04461
  .38544   -.04244
  .42036   -.04015
  .45528   -.03785
  .49020   -.03556
  .52512   -.03326
  .56003   -.03097
  .59495   -.02867
  .62987   -.02638
  .66479   -.02408
  .69970   -.02179
  .73462   -.01949
  .76954   -.01720
  .80446   -.01490
  .83938   -.01261
  .87430   -.01031
  .90921   -.00801
  .94413   -.00572
  .97905   -.00342
 1.00000   -.00205
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Lednicer format dat file
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Polars for BELL 540 AIRFOIL (MODIFIED NACA 0012) (b540ols-il)

PlotAirfoilReynolds #NcritMax Cl/CdDescriptionSource 
   b540ols-il50,000921.3 at α=5.25°Mach=0 Ncrit=9Xfoil predictionDetails
   b540ols-il50,000524.9 at α=5.75°Mach=0 Ncrit=5Xfoil predictionDetails
   b540ols-il100,000931.5 at α=5.25°Mach=0 Ncrit=9Xfoil predictionDetails
   b540ols-il100,000534.1 at α=6°Mach=0 Ncrit=5Xfoil predictionDetails
   b540ols-il200,000942.5 at α=5.25°Mach=0 Ncrit=9Xfoil predictionDetails
   b540ols-il200,000544.9 at α=6.75°Mach=0 Ncrit=5Xfoil predictionDetails
   b540ols-il500,000959.4 at α=7°Mach=0 Ncrit=9Xfoil predictionDetails
   b540ols-il500,000562.1 at α=8°Mach=0 Ncrit=5Xfoil predictionDetails
   b540ols-il1,000,000974.8 at α=8°Mach=0 Ncrit=9Xfoil predictionDetails
   b540ols-il1,000,000576.5 at α=8.75°Mach=0 Ncrit=5Xfoil predictionDetails
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