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The profile (1-4) of a rotor blade (5) of a wind power plant is characterized in that the main camber line runs beneath the chord at least in sections in the direction of the pressure side (8). The profile is further characterized in that the profile (1-4) has a relative profile thickness of greater

The profile (1-4) of a rotor blade (5) of a wind power plant is characterized in that the main camber line runs beneath the chord at least in sections in the direction of the pressure side (8). The profile is further characterized in that the profile (1-4) has a relative profile thickness of greater than 45% with a position of maximum thickness of less than 50%, wherein a lift coefficient (ca) of greater than 0.9, particularly greater than 1.4 is achieved in turbulent flow.

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1. Profile (1-4) of a rotor blade (5) of a wind power plant, the rotor blade comprising: an upper side (suction side) (7), anda lower side (pressure side) (8) with a main camber line (21, 25) and a chord (18) between a leading edge (10) and a trailing edge (11) of the profile (1-4),wherein the main

1. Profile (1-4) of a rotor blade (5) of a wind power plant, the rotor blade comprising: an upper side (suction side) (7), anda lower side (pressure side) (8) with a main camber line (21, 25) and a chord (18) between a leading edge (10) and a trailing edge (11) of the profile (1-4),wherein the main camber line (21, 25) runs beneath the chord (18) at least in sections in a direction of the pressure side (8),wherein the profile (1-4) has a relative profile thickness of greater than or equal to 55% of a length of the chord (18),wherein a position of maximum thickness is at less than 35% of the length of the chord (18) from a nose of the rotor blade, wherein the main camber line (21, 25) is disposed completely beneath the chord (18) in a section between 2% to 60% of the profile depth of the profile (1-4). 2. Profile (1-4) according to claim 1, wherein a maximum camber is defined as a distance of the main camber line (21, 25) to the chord (18) in percentage of the chord length, and wherein a value of the maximum camber is less than 0.015. 3. Profile (1-4) according to claim 1, wherein the second derivative of the camber line (21, 25) (curvature of the camber line) is either 0 or positive from 2% to 60%, of the profile depth. 4. Profile (1-4) according to claim 1, wherein the relative profile thickness is greater than or equal to 70%. 5. Profile (1-4) according to claim 1, wherein the suction side (7) and the pressure side (8) of the profile (1-4) have a concave contour in the trailing region, at least in sections. 6. Plurality of profiles (1-4) according to claim 1, wherein that are implemented in at least one region of a rotor blade (5) of a wind power plant. 7. Rotor blade (5) of a wind power plant having a plurality of profiles (1-4) according to claim 6. 8. Rotor blade (5) according to claim 7, wherein the plurality of profiles (1-4) is disposed in a transition region (13) of the rotor blade (5) in the proximity of the blade root (12).