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    AL81.5A

    AL81.5A

    Technical data                 
    Blade length 81.5m
    Design type class   IEC S
    Max. chord length   4.6m
    Pre-bending    4.5m
    Pre-cone angle/can be different 0°
    Mass without  T-Bolt 18.5t
    Mass of  T-bolt     502kg
    Design  operation life    20years
    Material   E/H-glass  reinforced Epoxy
    Operation Parameter            
    Rated power 4.x / 5.x MW
    Rotor Diameter 165m
    Number of blades3
    Power control  Pitchable &  Variable-speed
    Speed range 6-11rpm
    Rated tip speed88m/s
    Rated rotor speed  10rpm
    Optimal tip speed ratio10.9
    Performance coefficient at TSR-opt 0.48
    Blade Connection            
    Principle Insert
    Bolt hole circle diameter2800mm
    Number, Size of tension bolts112xM36X4.0 10.9
    Outer diameter of root2900mm


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