Jet engine

 Automobiles on the ground, produce a force to propel us ahead. The engine turns the wheels, which push the car forward by pushing it off the ground. Because there is nothing to push off in flight, a new concept is needed to provide propulsion. 
If you opened the fire extinguisher, a torrent of gas would be released, propelling you in the other direction. Sir Isaac Newton initially articulated the physics behind this theory in his three principles of motion in the 17th century. The turbine engine works on the same principle: it produces a force pushing the plane forward by blowing air out of the rear of the engine fast. The jet turbine engine is used to generate this fast-moving gas stream. This follows the 'Suck-Squeeze-Bang-Blow' concept. The illustration below depicts an engine with the various parts and their functions labelled.

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