Drag coefficient and power required

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To calculate the drag coefficient of a two-blade rotor, it's essential to reference materials on helicopter aerodynamics, which provide relevant formulas and diagrams. Understanding the relationship between drag, torque, and power is crucial for accurate calculations. Utilizing established aerodynamics literature can help clarify the necessary equations. Further questions can be addressed after reviewing the suggested resources. This approach will enhance the accuracy of the rotor's performance analysis.
sadegh_865
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hi

i need to calculate the drag coefficient of a rotor bade(with two blade).infact i need to calculate the torque by drag,then power required for rotate that rotor on a fixed test stand.
who knows about what formula or chart, diagrams...

thanks in regards
sadegh
 
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I would suggest looking through a book on helicopter aerodynamics. You might find something of use inside of it...

Then you can repost any questions you have about the equations in said book.
 
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