Where to Find Moment Coefficients?

AI Thread Summary
Moment coefficients vary by aerodynamic body shape and change with speed and Mach number. The NASG database provides polar curves but lacks specific moment coefficient values. For accurate estimates, Computational Fluid Dynamics (CFD) programs and wind tunnel tests are recommended. Basic estimations can be made for simple shapes, but they are not precise. Finding a dedicated website for moment coefficients remains a challenge.
physicsCU
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Is there a website that has these?

The NASG database doesn't list values, just a plot (not the best way to read values!). The .dat file with each polar curve seems to only be lift, drag, and AoA.

Any help is appreciated!
 
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physicsCU said:
Is there a website that has these?

The NASG database doesn't list values, just a plot (not the best way to read values!). The .dat file with each polar curve seems to only be lift, drag, and AoA.

Any help is appreciated!
Assuming you are speaking of aerodynamic moment coefficients, you should understand that they are different for each different aerodynamic body shape (not to mention their change over different speed/Mach ranges). Do you have a particular shape in mind? There are some really rough means for estimating them for simple shapes, but the best estimates come from Computational Fluid Dynamic programs and the real data comes from wind tunnel tests.

Rainman
 

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