Product Details ⇣
Helicopter Main Rotor
All of the sizes can be used for single rotor and three blades helicopter, many sizes rotors are used for coxial helicopters.

▌Features
Improve the efficiency for comparing with similar main rotors
Overall optimized design, good wind resistance, better balance, better handing with torsion angle
R/L two rotation directions
Customized Damper, Root, Tip, Leading edge protection(including painting, metal protection and tape protection)
▌Technical Data
Single 990mm main rotor figure
| Item | H (mm) | D (mm) | L (mm) | W (mm) | L1 (mm) | W1 (mm) |
| HK990 | 13.95 | 990 | 72 | 25 | 18.9 |
▌Parameters
| Length(mm) |
| 990 |
| 1080 |
| 1200 |
| 1205 |
| 1348 |
| 1500 |
| 1700 |
| 1900 |
| 2100 |
| 2300 |
| 2500 |
| 2824 |
| 3200 |
| 3500 |