Rocket Drag Coefficient Calculator
Estimate total Cd by summing nose, body, base, fin, and interference drag using semi-empirical methods from Hoerner and Mandell/Caporaso/Bengen.
Inputs
Results
Total Cd
0.89
Nose cone Cd0.05
Body tube Cd0.24
Base drag Cd0.14
Fin Cd0.39
Drag force at speed (N)2.31
Reynolds number2,598,895
Fineness Ratio2.76%
How to Use This Calculator
- Enter Body diameter (mm), Body tube length (mm), and Nose cone length (mm).
- Set Nose type (1-3), Number of fins, and Fin root chord (mm).
- Adjust Fin semi-span (mm), Fin thickness (mm) as needed.
- Review the Total Cd result.
- Use Nose cone Cd and Body tube Cd to inform your decision.
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