Its advantages are good stability and suitability for hoisting. 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.
In a word, compared with the helicopter with ordinary layout, the load of the twin-rotor helicopter with * * * axis is heavier, and its characteristics can be seen from its wide application in Russia.
A rotorcraft like the Osprey is called a tilt rotorcraft? It has the advantages of vertical lifting ability of helicopter and higher speed, longer range and lower fuel consumption of fixed-wing propeller aircraft. It can be said that the advantages of helicopter and propeller plane are taken into account, and the efficiency is improved.
Hope to adopt! !