Flight works by using the principles of aerodynamics to generate lift and propel an aircraft through the air. Lift is created by the shape of the wings, which are designed to produce an area of lower air pressure above the wing and an area of higher air pressure below it. This pressure difference creates an upward force called lift that counteracts the weight of the aircraft and keeps it flying.
The movement of the aircraft is achieved through the use of engines, which produce thrust by expelling hot gases out of the back of the engine. The thrust generated by the engines is then directed forward, propelling the aircraft through the air. The combination of lift and thrust allows the aircraft to fly steadily and efficiently.
The specific mechanics of flight can vary depending on the type of aircraft and the conditions in which it is flying. However, the fundamental principles of lift and thrust remain the same for all types of flight.
The article provided does not specifically discuss the mechanics of flight, but rather focuses on how flight attendants cope with working on the longest flight in the world.