Figure 27
From: Investigation of the performance of a horizontal-axis dual rotor wind turbine

DRWT configuration with front rotor (S826 airfoil and D 0.9Â m), rear rotor (Eppler airfoil and D 1.8Â m) and an axial distance of 1Rfront.
From: Investigation of the performance of a horizontal-axis dual rotor wind turbine

DRWT configuration with front rotor (S826 airfoil and D 0.9Â m), rear rotor (Eppler airfoil and D 1.8Â m) and an axial distance of 1Rfront.