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According to this page

The drag coefficient of a rounded cylindrical bodies is given by this graph

Then the drag coefficient of a cone for a half vertex angle ε is given by this graph.

How can the drag coefficient ($C_D$) of a cone follow a cylindrical body (as seen in the example be computed? Are there any analytical methods to compute the drag coefficient without doing any experiments ?

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  • $\begingroup$ No. To my knowledge $C_D$ can only be calculated for very, very low $\mathrm{Re}$ numbers (see Stokes' Law). For any realistic speeds, only empirical measurement can determine the value. $\endgroup$ – Gert Apr 22 at 15:18

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