Wind-turbine rotor blade

A wind-turbine rotor blade comprising:

• an outer skin member formed of fiber-reinforced plastic, shear webs, and trailing-edge sandwich members disposed closer to a trailing edge than the shear webs,
• wherein the outer skin member at a dorsal side located closer to the trailing edge than a trailing-edge end of the trailing-edge sandwich member located at the dorsal side or a vicinity of the trailing-edge end of the trailing-edge sandwich member located at the dorsal side is coupled, via a reinforcing member, with the outer skin member at a ventral side located closer to the trailing edge than a trailing-edge end of the trailing-edge sandwich member located at the ventral side or a vicinity of the trailing-edge end of the trailing-edge sandwich member located at the ventral side;
• the reinforcing member is provided with a trapezoidal-shaped strut member which is made of plastic foam or wood, a dorsal-side skin member disposed at the dorsal side of the trapezoidal-shaped strut member, and a ventral-side skin member disposed at the ventral side of the trapezoidal-shaped strut member;
• the trapezoidal-shaped strut member is integrally formed with the dorsal-side skin member and the ventral-side skin member so as to be sandwiched therebetween;
• the dorsal-side skin member and/or the ventral-side skin member is formed of fiber-reinforced plastic in which reinforcement fibers are oriented in a blade longitudinal direction;
• a second skin member, that has a substantially angular-U-shape in cross section and that is disposed so as to contact an outer side of the trapezoidal-shaped strut member, the dorsal-side skin member, and the ventral-side skin member, is further provided;
• and
• the trapezoidal-shaped strut member, the dorsal-side skin member, the ventral-side skin member, and the second skin member are integrally formed.