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AIRFOIL: NACA 0012
DATA: 1/4 chord Pitching Moment Coefficients
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ORIGINAL SOURCE: Sheldahl, R. E. and Klimas, P. C., Aerodynamic
Characteristics of Seven Airfoil Sections Through
180 Degrees Angle of Attack for Use in Aerodynamic
Analysis of Vertical Axis Wind Turbines, SAND80-2114,
March 1981, Sandia National Laboratories, Albuquerque,
New Mexico.

NOTES: The data herein were synthesised from a combination of
experimental results and computer calculations.

The original report contains data for lower Reynolds numbers
than contained herein, but there are some anomalies, in
particular with CL at small angles of attack.

Data extended to 360 degrees of attack and glaring anomalies
corrected by L. Lazauskas. All deviations from the original
are due to L. Lazauskas.

Please refer to the original report for more details. 

------------------------------------------------------------------------ 

Pitching Moment Coefficient                                              

-------------------------------- REYNOLDS NUMBER ----------------------- 

ALPHA     360000     500000     700000     860000    1360000    1760000  

------------------------------------------------------------------------ 

    0     0.0000     0.0000     0.0000     0.0000     0.0000     0.0000  

    2    -0.0100    -0.0050     0.0070     0.0040     0.0060     0.0000  

    4    -0.0220    -0.0100     0.0080     0.0070     0.0100     0.0030  

    6    -0.0120     0.0060     0.0030    -0.0040     0.0030     0.0040  

    8     0.0210     0.0220     0.0160     0.0050     0.0050     0.0000  

   10     0.0260     0.0370     0.0300     0.0090     0.0130     0.0090  

   11     0.0120     0.0400     0.0340     0.0170     0.0160     0.0130  

   12    -0.0500    -0.0210    -0.0220     0.0190     0.0180     0.0170  

   13    -0.0590    -0.0500    -0.0500     0.0240     0.0210     0.0200  

   14    -0.0790    -0.0610    -0.0600    -0.0160     0.0010     0.0210  

   15    -0.0810    -0.0680    -0.0610    -0.0230    -0.0330    -0.0500  

   16    -0.0880    -0.0620    -0.0640    -0.0620    -0.0410    -0.0530  

   17    -0.0830    -0.0700    -0.0700    -0.0820    -0.0470    -0.0620  

   18    -0.0750    -0.0810    -0.0760    -0.0800    -0.0850    -0.0540  

   20    -0.0810    -0.0630    -0.0670    -0.0900    -0.0800    -0.0990  

   22    -0.0680    -0.0650    -0.0760    -0.0820    -0.0780    -0.0940  

   24    -0.0740    -0.1080    -0.0780    -0.1000    -0.0910    -0.0960  

   26    -0.0850    -0.0950    -0.0900    -0.1020    -0.1100    -0.1190  

   28    -0.0950    -0.0970    -0.0980    -0.1100    -0.1350    -0.1480  

   30    -0.1030    -0.1000    -0.1100    -0.1400    -0.1250    -0.1460  

   34    -0.0950    -0.1500    -0.1700    -0.1700    -0.1700    -0.1700  

   38    -0.1200    -0.2200    -0.1800    -0.1800    -0.1800    -0.1800  

   40    -0.2050    -0.1950    -0.2250    -0.2250    -0.2250    -0.2250  

 42.5    -0.2490    -0.2100    -0.1400    -0.1400    -0.1400    -0.1400  

   45    -0.2250    -0.1600    -0.1800    -0.1800    -0.1800    -0.1800  

   50    -0.1550    -0.1250    -0.2600    -0.2600    -0.2600    -0.2600  

   55    -0.3600    -0.2000    -0.3200    -0.3200    -0.3200    -0.3200  

   60    -0.2400    -0.2600    -0.2800    -0.2800    -0.2800    -0.2800  

   65    -0.2800    -0.2300    -0.2950    -0.2950    -0.2950    -0.2950  

   70    -0.3300    -0.3800    -0.2850    -0.2850    -0.2850    -0.2850  

   75    -0.2700    -0.2600    -0.3600    -0.3600    -0.3600    -0.3600  

   80    -0.4100    -0.3450    -0.1900    -0.1900    -0.1900    -0.1900  

   85    -0.2900    -0.3350    -0.2900    -0.2900    -0.2900    -0.2900  

   86    -0.3300    -0.3650    -0.3850    -0.3850    -0.3850    -0.3850  

   90    -0.3550    -0.1750    -0.2800    -0.2800    -0.2800    -0.2800  

   91    -0.4100    -0.3200    -0.4600    -0.4600    -0.4600    -0.4600  

   95    -0.2400    -0.4200    -0.3550    -0.3550    -0.3550    -0.3550  

  100    -0.3600    -0.3900    -0.5250    -0.5250    -0.5250    -0.5250  

  105    -0.6250    -0.4100    -0.2750    -0.2750    -0.2750    -0.2750  

  110    -0.4900    -0.4200    -0.3400    -0.3400    -0.3400    -0.3400  

  115    -0.3300    -0.4100    -0.3800    -0.3800    -0.3800    -0.3800  

  120    -0.4200    -0.4850    -0.3200    -0.3200    -0.3200    -0.3200  

  125    -0.3900    -0.5150    -0.4800    -0.4800    -0.4800    -0.4800  

  130    -0.3900    -0.4600    -0.3600    -0.3600    -0.3600    -0.3600  

  131    -0.4850    -0.4750    -0.3800    -0.3800    -0.3800    -0.3800  

  135    -0.4050    -0.4350    -0.4050    -0.4050    -0.4050    -0.4050  

  136    -0.5550    -0.4450    -0.4250    -0.4250    -0.4250    -0.4250  

  140    -0.4550    -0.3800    -0.5150    -0.5150    -0.5150    -0.5150  

  145    -0.4050    -0.3900    -0.4300    -0.4300    -0.4300    -0.4300  

  150    -0.3850    -0.3750    -0.4050    -0.4050    -0.4050    -0.4050  

  155    -0.3200    -0.3100    -0.3350    -0.3350    -0.3350    -0.3350  

  160    -0.2950    -0.2850    -0.3000    -0.3000    -0.3000    -0.3000  

  165    -0.2900    -0.2700    -0.2800    -0.2800    -0.2800    -0.2800  

  170    -0.3750    -0.3500    -0.3800    -0.3800    -0.3800    -0.3800  

  175    -0.2900    -0.2850    -0.3100    -0.3100    -0.3100    -0.3100  

  180     0.0250     0.0450    -0.0200    -0.0200    -0.0200    -0.0200  

  185     0.2900     0.2850     0.3100     0.3100     0.3100     0.3100  

  190     0.3750     0.3500     0.3800     0.3800     0.3800     0.3800  

  195     0.2900     0.2700     0.2800     0.2800     0.2800     0.2800  

  200     0.2950     0.2850     0.3000     0.3000     0.3000     0.3000  

  205     0.3200     0.3100     0.3350     0.3350     0.3350     0.3350  

  210     0.3850     0.3750     0.4050     0.4050     0.4050     0.4050  

  215     0.4050     0.3900     0.4300     0.4300     0.4300     0.4300  

  220     0.4550     0.3800     0.5150     0.5150     0.5150     0.5150  

  224     0.5550     0.4450     0.4250     0.4250     0.4250     0.4250  

  225     0.4050     0.4350     0.4050     0.4050     0.4050     0.4050  

  229     0.4850     0.4750     0.3800     0.3800     0.3800     0.3800  

  230     0.3900     0.4600     0.3600     0.3600     0.3600     0.3600  

  235     0.3900     0.5150     0.4800     0.4800     0.4800     0.4800  

  240     0.4200     0.4850     0.3200     0.3200     0.3200     0.3200  

  245     0.3300     0.4100     0.3800     0.3800     0.3800     0.3800  

  250     0.4900     0.4200     0.3400     0.3400     0.3400     0.3400  

  255     0.6250     0.4100     0.2750     0.2750     0.2750     0.2750  

  260     0.3600     0.3900     0.5250     0.5250     0.5250     0.5250  

  265     0.2400     0.4200     0.3550     0.3550     0.3550     0.3550  

  269     0.4100     0.3200     0.4600     0.4600     0.4600     0.4600  

  270     0.3550     0.1750     0.2800     0.2800     0.2800     0.2800  

  274     0.3300     0.3650     0.3850     0.3850     0.3850     0.3850  

  275     0.2900     0.3350     0.2900     0.2900     0.2900     0.2900  

  280     0.4100     0.3450     0.1900     0.1900     0.1900     0.1900  

  285     0.2700     0.2600     0.3600     0.3600     0.3600     0.3600  

  290     0.3300     0.3800     0.2850     0.2850     0.2850     0.2850  

  295     0.2800     0.2300     0.2950     0.2950     0.2950     0.2950  

  300     0.2400     0.2600     0.2800     0.2800     0.2800     0.2800  

  305     0.3600     0.2000     0.3200     0.3200     0.3200     0.3200  

  310     0.1550     0.1250     0.2600     0.2600     0.2600     0.2600  

  315     0.2250     0.1600     0.1800     0.1800     0.1800     0.1800  

317.5     0.2490     0.2100     0.1400     0.1400     0.1400     0.1400  

  320     0.2050     0.1950     0.2250     0.2250     0.2250     0.2250  

  322     0.1200     0.2200     0.1800     0.1800     0.1800     0.1800  

  326     0.0950     0.1500     0.1700     0.1700     0.1700     0.1700  

  330     0.1030     0.1000     0.1100     0.1400     0.1250     0.1460  

  332     0.0950     0.0970     0.0980     0.1100     0.1350     0.1480  

  334     0.0850     0.0950     0.0900     0.1020     0.1100     0.1190  

  336     0.0790     0.0980     0.1150     0.1150     0.1150     0.1150  

  338     0.0760     0.0970     0.1060     0.1060     0.1060     0.1060  

  340     0.0620     0.0950     0.0990     0.1030     0.1080     0.1000  

  342     0.0620     0.0900     0.0870     0.0960     0.0970     0.0980  

  343     0.0690     0.0790     0.0820     0.0920     0.0990     0.1000  

  344     0.0740     0.0720     0.0800     0.0950     0.0950     0.0970  

  345     0.0720     0.0760     0.0850     0.0750     0.0880     0.0420  

  346     0.0540     0.0710     0.0410     0.0130     0.0290    -0.0030  

  347     0.0360     0.0400    -0.0310    -0.0180    -0.0150    -0.0200  

  348    -0.0260    -0.0250    -0.0280    -0.0160    -0.0130    -0.0180  

  349    -0.0260    -0.0240    -0.0230    -0.0130    -0.0090    -0.0140  

  350    -0.0260    -0.0200    -0.0150    -0.0120    -0.0070    -0.0100  

  352    -0.0130    -0.0050    -0.0050    -0.0080     0.0000    -0.0030  

  354    -0.0050     0.0000     0.0000     0.0000    -0.0010    -0.0100  

  356    -0.0050    -0.0020    -0.0120    -0.0090    -0.0060    -0.0110  

  358    -0.0170    -0.0070    -0.0030    -0.0050    -0.0020    -0.0060  

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