NOVELTY - The method (300) involves arranging (310) a continuous fiber mat adjacent to a prefabricated layer so as to provide the randomly arranged reinforcing fibers and prefabricated layer comprises reinforcing fibers and a cured polymeric resin. The structural layer adjacent the mat is arranged (320) opposite to prefabricated layer so as to provide the reinforcing fibers. The polymeric resin is infused (330) through mat. The resin is cured (340) to form a fiber reinforced portion of a rotor blade of wind turbine.    USE - Method for manufacturing fiber reinforced portion of rotor blade of wind turbine (claimed) such as horizontal axis wind turbine.    ADVANTAGE - The random fiber mats facilitate the infusion of a polymeric resin throughout the thickness of the fiber reinforced portion of the blade while eliminating dry spots in the structure. Thus, the cycle time and cost are reduced by eliminating the need for secondary processes of building up thick sections of the wind turbine blade. The blades are rotated and subjected to centrifugal forces and to various bending moments when the wind strikes blades so as to deflect and/or rotate from a neutral, or non-deflected, position to a deflected position. Thus, the pitch angle of blades can be changed by pitching mechanism to facilitate increasing or decreasing speed of blade for reducing tower strike.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a rotor blade of wind turbine.    DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the process for manufacturing fiber reinforced portion of rotor blade of wind turbine.    Method for manufacturing fiber reinforced portion of rotor blade of wind turbine (300)    Step for arranging continuous fiber mat adjacent to prefabricated layer so as to provide randomly arranged reinforcing fibers and prefabricated layer comprises reinforcing fibers and cured polymeric resin (310)    Step for arranging structural layer adjacent continuous fiber mat opposite to prefabricated layer so as to provide reinforcing fibers (320)    Step for infusing polymeric resin through continuous fiber mat (330)    Step for curing resin to form fiber reinforced portion of rotor blade of wind turbine (340)