The twin-rotor cross helicopter, like other twin-rotor helicopters, is equipped with two rotors with the same rotation direction and opposite rotation direction. Its obvious feature is that the axes of the two rotors are not parallel, and they are inclined to the outside respectively, and the transverse wheelbase is very small, so the two rotors cross above the fuselage.
The biggest advantage is good stability, which is suitable for hoisting operation. The biggest disadvantage is that due to the lateral arrangement of the two rotors, the aerodynamic resistance is large. However, due to the short distance between its two rotor shafts, its aerodynamic drag is smaller than that of a tandem helicopter with two rotors.
data
Captain:? 7.67 meters?
Machine height: 4.733 meters?
Empty weight:? 1833 kg?
Rotor diameter:? 14.33m?
Voyage:? 354 kilometers?
Maximum takeoff weight:? 3084 kilograms?
Tail rotor diameter:? -m？
Climbing rate:? 4. 1/ sec?
Service limit:? 70 10 meter?
Effective hovering upper limit:? 3660 meters?
Cruise speed:? 184 km？
No-effect hovering ceiling:? 2750 meters?
Maximum speed:? 120km