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Propeller Torque Calculator






 

 

 

 


How This Is Calculated


$$ Q = \frac{1}{2} \rho n^2 D^5 C_Q $$ where:

Q   =   Torque   (Nm)

ρ   =   Density of fluid   (kg/m³)

n   =   Propeller rotational speed   (rev/s)

D   =   Propeller diameter   (m)

CQ   =   Torque Coefficient   (dimensionless)


Assumptions


  • The system is in steady state.
  • Flow is uniform.
  • The fluid is incompressible.
  • The blade flexibility is negligible.
  • System is under isothermal conditions.


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