AL91A2
AL91A2
| Technical data | |
| Blade length | 91m |
| Design type class | IEC S |
| Max. chord length | 4.8m |
| Pre-bending | 6.5m |
| Pre-cone angle/can be different | 0° |
| Mass without T-Bolt | 23.7t |
| Mass of T-bolt | 615kg |
| Radius center of mass | 25.876m |
| Design operation life | 20years |
| Material | E/H-glass reinforced Epoxy |
| Operation Parameter | |
| Rated power | 5.x MW |
| Rotor Diameter | 185m |
| Number of blades | 3 |
| Power control | Pitchable & Variable-speed |
| Speed range | 5-10rpm |
| Rated tip speed | 87.13m/s |
| Rated rotor speed | 9rpm |
| Optimal tip speed ratio | 11.2 |
| Performance coefficient at TSR-opt | 0.477 |
| Blade Connection | |
| Principle | Insert |
| Bolt hole circle diameter | 3200mm |
| Number, Size of tension bolts | 128xM36X4.0 10.9 |
| Outer diameter of root | 3310mm |
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