AL91A

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AL91A

Technical data                 
Blade length 91m
Design type class   IEC S
Max. chord length   4.8m
Pre-bending    5.8m
Pre-cone angle/can be different 
Mass without  T-Bolt 24.6t
Mass of  T-bolt     585kg
Radius center of mass 26.095m
Design  operation life    20years
Material   E/H-glass  reinforced Epoxy
Operation Parameter            
Rated power 6.x MW
Rotor Diameter 185m
Number of blades3
Power control  Pitchable &  Variable-speed
Speed range 5-10rpm
Rated tip speed90.10m/s
Rated rotor speed  9.25rpm
Optimal tip speed ratio11.2
Performance coefficient at TSR-opt 0.48
Blade Connection            
Principle Insert
Bolt hole circle diameter3200mm
Number, Size of tension bolts128xM36X4.0 10.9
Outer diameter of root3310mm


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