Is a helicopter an aircraft?

Yes, a helicopter is considered an aircraft. An aircraft is any vehicle that is capable of atmospheric flight due to interaction with the air, such as buoyancy or lift. Helicopters achieve lift and propulsion through the use of one or more powered propellers, known as rotors, that rotate on a vertical axis. This distinguishes them from fixed-wing aircraft, which generate lift through their stationary wings as they move forward through the air. Helicopters are unique among aircraft for their ability to hover, take off, and land vertically, as well as fly forwards, backwards, and laterally.