Vehicle transportable rotor blade of a wind-energy turbine

A system that includes a wind power installation rotor blade having an inboard and an outboard end, the system comprising:

• a rotor blade root at the inboard end;
• and
• an intermediate device fixedly coupled to the rotor blade root at one end and provided for a rotatably coupling to a rotary support member at an other end, in a manner to enable a rotation of entire said rotor blade around the rotor blade's longitudinal axis in relation to the rotary support member, the intermediate device configured to keep the rotor blade in a substantially horizontal orientation as the rotor blade rotates around the rotor blade's longitudinal axis and as the rotor blade is being transported.

A system that includes a wind power installation rotor blade having an inboard and an outboard end, the system comprising:

• a rotor blade root at the inboard end;
• and
• an intermediate device fixedly coupled to the rotor blade root at one end and provided for a rotatably coupling to a rotary support member at an other end, in a manner to enable a rotation of entire said rotor blade around the rotor blade's longitudinal axis in relation to the rotary support member, wherein the intermediate device includes a rotary drive to drive the rotation of the rotor blade in relation to the rotary support member.

A system that includes a wind power installation rotor blade having an inboard and an outboard end, the system comprising:

• a rotor blade root at the inboard end;
• and
• an intermediate device fixedly coupled to the rotor blade root at one end and provided for a rotatably coupling to a rotary support member at an other end, in a manner to enable a rotation of entire said rotor blade around the rotor blade's longitudinal axis in relation to the rotary support member, wherein the intermediate device, wherein the intermediate device includes a plurality of stiffening members to stiffen the rotor blade.