Rotor blade for a wind energy installation

A rotor blade for a wind power installation, comprising:

• at least a first component and a second component, wherein the first component has a rotor blade tip and the second component has a rotor blade root, and the first and the second components are separate parts which jointly form the rotor blade, wherein the first component has a first material,
• wherein the second component has at least a first and a second part which are in the form of separate parts and jointly form the second component,
• wherein the first part represents a load-bearing part and the second part represents a blade trailing edge box,
• wherein the first part comprises a second material and the second part a third material,
• wherein there are provided fiber-reinforced synthetic resin as the first material, steel as the second material for the load-bearing part of the second component and aluminum as the third material for the part or parts of the blade trailing edge box,
• wherein a connection between the first and second components of the rotor blade is a butt joint, and connecting elements for bridging over a joint gap of the butt joint are arranged exclusively within the rotor blade, and
• wherein the connecting elements have cross-bolts, tie elements and an L-flange directed inwardly of the rotor blade on the second component, the cross-bolts are received in openings in the first component, and the tie elements are connected to the cross-bolts, extend through the L-flange, and are fixed there.