An aircraft engine, often referred to as an aero engine, is the power component of an aircraft propulsion system. Aircraft using power components are referred to as powered flight. Most aircraft engines are either piston engines or gas turbines, although a few have been rocket powered and in recent years many small UAVs have used electric motors.
A Rolls-Royce Merlin installed in a preserved Avro York
Wright vertical 4-cylinder engine
Ranger L-440 air-cooled, six-cylinder, inverted, in-line engine used in Fairchild PT-19
A Rolls-Royce Merlin V-12 Engine
An aircraft is a vehicle that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or the dynamic lift of an airfoil, or, in a few cases, direct downward thrust from its engines. Common examples of aircraft include airplanes, helicopters, airships, gliders, paramotors, and hot air balloons.
The Cessna 172 Skyhawk is the most produced aircraft in history.
Hot air balloons
Airship USS Akron over Manhattan in the 1930s
An Airbus A380, the world's largest passenger airliner