• long8

    AL91A2

    AL91A2

    Technical data
    Blade length91m
    Design type classIEC S
    Max. chord length4.8m
    Pre-bending6.5m
    Pre-cone angle/can be different0°
    Mass without  T-Bolt23.7t
    Mass of  T-bolt   615kg
    Radius center of mass25.876m
    Design  operation life 20years
    MaterialE/H-glass  reinforced Epoxy
    Operation Parameter
    Rated power5.x MW
    Rotor Diameter185m
    Number of blades3
    Power controlPitchable &  Variable-speed
    Speed range5-10rpm
    Rated tip speed87.13m/s
    Rated rotor speed9rpm
    Optimal tip speed ratio11.2
    Performance coefficient at TSR-opt0.477
    Blade Connection
    PrincipleInsert
    Bolt hole circle diameter3200mm
    Number, Size of tension bolts128xM36X4.0 10.9
    Outer diameter of root3310mm


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