Table 1 Blades geometry: nominal arch angles, used as names, masses, radii of spheres forming blade surfaces, and angles of the surfaces to the blade plane at the rim, as shown in the inset in Fig. 1.

From: An aeroelastic wind energy harvester with continuous orbiting motion and no friction components

Blade name

m

\(R_1\), mm

\(R_2\), mm

\(\theta _1\)

\(\theta _2\)

\(35^\circ\)

60

1057

1480

\(42^\circ\)

\(30^\circ\)

\(45^\circ\)

63

1120

900

\(38^\circ\)

\(51^\circ\)

\(55^\circ\)

68

920

805

\(49^\circ\)

\(61^\circ\)

\(65^\circ\)

74

804

745

\(59^\circ\)

\(70^\circ\)