An aircraft is a machine that is able to fly by gaining support from the air, or, in general, the atmosphere of a planet.
It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engine.
It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engine.