MH 18B

Designed for pylon racing model aircraft (Quickie 500)

Characteristics

• Thickness: 11.8%
• Low moment coefficient of cm c/4.
• Well suited for the Quickie 500 (german DMFV B-class).
• Optimized version of the MH 18 with improved results for powerful engines.
  (Method: geometric optimization with shape functions).
• Can be used at Reynoldsnumbers of 350'000 and above.
• See also MH 18, MH 20, MH 22, MH 27.

Calculated Polars (X-Foil/Drela):

• GIF-Image (9 kBytes)
• Listing in PEF format

Coordinates

  x        y
 100.000  0.000
  99.726 -0.029
  98.907 -0.100
  97.553 -0.096
  95.677 -0.027
  93.301  0.151
  90.451  0.478
  87.157  0.978
  83.457  1.651
  79.389  2.475
  75.000  3.405
  70.337  4.381
  65.451  5.333
  60.396  6.193
  55.226  6.904
  50.000  7.424
  44.774  7.729
  39.604  7.816
  34.549  7.700
  29.663  7.402
  25.000  6.958
  20.611  6.401
  16.543  5.762
  12.843  5.068
   9.549  4.343
   6.699  3.603
   4.323  2.859
   2.447  2.121
   1.093  1.395
   0.274  0.687
   0.000  0.000
   0.274 -0.548
   1.093 -1.042
   2.447 -1.487
   4.323 -1.891
   6.699 -2.262
   9.549 -2.605
  12.843 -2.923
  16.543 -3.211
  20.611 -3.462
  25.000 -3.667
  29.663 -3.816
  34.549 -3.900
  39.604 -3.918
  44.774 -3.871
  50.000 -3.766
  55.226 -3.613
  60.396 -3.421
  65.451 -3.197
  70.337 -2.948
  75.000 -2.677
  79.389 -2.382
  83.457 -2.066
  87.157 -1.730
  90.451 -1.381
  93.301 -1.032
  95.677 -0.701
  97.553 -0.411
  98.907 -0.182
  99.726 -0.045
 100.000  0.000

last modification of this page: 11.11.01

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As I get quite a number of messages, it might take some time until you receive an answer and in some cases I get lost in the flood and you may even receive no answer at all. I apologize for this, and if you have not lost patience, you might want to send me a copy of your e-mail after a month or so.
Copyright 1986-2001 Martin Hepperle
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