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A three bladed Upwind Horizontal Axis Wind Turbine (UHAWT) rotor with a radiusR= 45 m and a root cutout at 15% R, a NACA 23012 blade cross section a chord distribution
c(r) = 3- 2.35294(r/45-0.15) m, and a blade pitch angle distribution ? (r) = arctan( 20/? r) -?/15 rad rotates with an uniform angular velocity ? = 2? /3 rad/s around the horizontal axis aligned with the incoming airflow of velocity V?= 20 m/s.Determine: The blade tip Mach number –make sure to take into account both components of velocity.
b.The rotor solidity – total area of the rotor blades vs. the total area of the propeller disk.
c(r) = 3- 2.35294(r/45-0.15) m, and a blade pitch angle distribution ? (r) = arctan( 20/? r) -?/15 rad rotates with an uniform angular velocity ? = 2? /3 rad/s around the horizontal axis aligned with the incoming airflow of velocity V?= 20 m/s.Determine: The blade tip Mach number –make sure to take into account both components of velocity.
b.The rotor solidity – total area of the rotor blades vs. the total area of the propeller disk.