Airplanes use a different type of engine as compared to cars and bikes.
Jet engines work on burning fuel and creating massive thrust by sucking air from front and blasting it off from the back.
Unlike conventional car and bike engines where fuel is burned and a piston moves to turn shafts and gears, an airplane uses a jet engine which works on the principle of burning fuel to rotate massive turbines. When the fuel is ignited inside a jet engine, the energy generated turns a turbine, which sucks in air from the front end and compresses it heavily. This compressed air is released from a narrower channel at the rear end of the engine which creates a massive thrust, pushing the engine forward. Together with two or more engines, the thrust is enough to generate a massive thrust, enough to move tons of weight. Check out how jet engines work in these two animated videos.
( Source : Deccan Chronicle. )
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