They're powered either by a gas turbine engine (known as a turboshaft), or some helicopters (such as the Robinson helicopters) still use internal combustion engines.
Helicopters have rotors airplanes have propellers
Helicopters can land where airplanes cannot.
Some airplanes have had up to 8 propellers.
No. Gliders, jets and rocket-propelled aircraft do not have propellers.
Propellors are on airplanes. Helicopters call them rotors. The small rotor on the back of the helicopter is used to counteract the torque created from the engine driving the main rotors.
Helicopters is for special military use and airplanes are only for transportation.
No, airplanes came first
Yes, some airplanes have propellers.
to fly ?
Helicopters can land on small ships, clearings in forest, on top of buildings etc. Airplanes can not do these things
Most Do
no