KarimMurad
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- Nov 25, 2016
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Is there any constraint or a mathematical equation to calculate the appropriate fin cant angle?
The governing equations for something like this would be somewhat related to turbomachines, i.e. the fins are acting like turbine fan blades that generate power or torque, in this case to rotate the model rocket. Turbine design theory could be found in a college or graduate level engineering textbook. However, most of the typical design equations for rotating turbomachines usually assume a constant operating condition, i.e. RPM and inlet/exit velocity, or slowly changing inlet conditions, a model rocket goes through a large velocity range very quickly and the RPM would not be constant.
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