Blade length 

68m     

Design type class   

TC  IIB   

Max. chord length   

5.12 m

Pre-bending    

2.85  m 

Pre-cone angle/can be different 

0°

Mass without  T-Bolt 

26780kg 

Mass of  T-bolt    

appr.740 kg

Radius center of mass 

22.16  m 

Design  operation life   

20  years 

1st/2nd flapwise frequency

0.52/1.38Hz

1st/2nd edgewise frequency 

0.86/2.75Hz

Operation  temperature range 

-30 ℃~+50℃

Survive  temperature range  

-45 ℃~+55℃

Material   

GFRP

Operation Parameter           

Rated power 

5000kW 

Rotor Diameter 

139.8m 

Number of blades

3 

Power control  

Pitchable  

Speed range 

7.2-13.15 rpm

Rated tip speed

85.5 m/s 

Rated rotor speed  

11.75 rpm

Cut in wind speed (10 minutes mean)    

3 m/s 

Cut out wind speed (10 minutes mean) 

25 m/s 

Survive wind speed (3 seconds mean)

59.5 m/s;

Optimal tip speed ratio

9.2   

Performance coefficient at TSR-opt 

0.48   

Blade Connection           

Principle 

T-bolt

Bolt hole circle diameter

3200m

Number, Size of tension bolts

90xM42 10.9  

Outer diameter of root

3320mm