AL91A2

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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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