What is VTOL?

VTOL stands for Vertical Take Off and Landing. A VTOL aircraft can take off, hover, and land vertically. VTOL aircraft include helicopters, autogyros, gyrodynes, convertiplanes, tiltjets, tiltrotors, and other types.

What is electric VTOL?

 Electric VTOL is a VTOL aircraft powered by electric propulsion systems.

What makes a helicopter fly?

As a helicopter's rotors turn, they push air downwards, which creates lift.

 How does a rotor work?

A rotor is a wing (airfoil) that can generate lift, an upward moving force. This airfoil shape is curved along the top and flatter on the bottom, which makes the air flow faster on top than on the bottom. The lowered pressure on top creates a suction and creates a lifting force. A helicopter moves the air over the rotor by spinning the rotor blade.

What happens to the helicopter when the engine fails in flight?

The engine powers the rotor, but the spinning rotor blades are responsible for creating lift to keep the helicopter in the air. When the engine fails, the helicopter can autorotate, where the rotor is driven solely by the upward flowing air.

Can a helicopter fly upside down?

Technically yes – a helicopter can briefly hover upside down – but this flexes the rotor blades too much towards the fuselage. It's unsafe and requires a skillful pilot to even attempt it.

What is a drone? Is it the same or different as a quadcopter?

A drone is any unmanned aerial vehicle. A quadcopter is a drone propelled by four rotors.