| 摘要 |
Abstract The invention concerns a rotor blade of a wind power installation and a wind power installation comprising a rotor having such rotor blades. The object of the invention is to avoid the above-indicated disadvantages and to provide for a better overall performance. A rotor blade of a wind power installation in which the rotor blade, in particular in the central region of the rotor, the so-called main board, has a lift-drag ratio which in the region of about + 2* from the optimum pitch angle has a lift-drag ratio value of more than 80%, preferably 90% and more of the maximum value of the lift-drag ratio. Total air force Lift Thrust po ngential force SUr*O Direction of rotation Air~Y reitac rV2a /3V, -:Blade setting angle CL a:Aerodyn pitch angle |
