1. Oil-powered helicopters are generally single-rotor
helicopters
,
2. The mechanical structure is complex,
4 High risk,
5, High fuel cost. Compared with multi-rotor electric drones, they have a simple structure and are easy to operate.
1. Oil-powered helicopters are generally single-rotor
helicopters
,
2. The mechanical structure is complex,
4 High risk,
5, High fuel cost. Compared with multi-rotor electric drones, they have a simple structure and are easy to operate.