How Does a Jet Engine Work?


Jet engines create enormous thrust to power aircraft through the air. An electric motor begins the rotation of a large multi-bladed fan on a center shaft at the front of the engine to draw in air. Then a combination of the air, fuel and a spark create combustion that forces heated gas through a turbine at high velocity to rotate it and begin creating jet propulsion.


  • The most commonly used jet engine in today's airliners is the turbofan type. An electric motor initiates the rotation of a multi-bladed fan in the front of the engine. As the rotation increases, the fan begins to suck air in. The air is then compressed and sent into a combustion chamber where fuel is sprayed into it and the mixture is ignited by a spark. This creates a high-pressured flaming gas that rushes through a turbine, also consisting of multiple blades, and causes it to rotate at a high speed. The spinning turbine keeps the fan rotating and the compressor operating so the entire combustion cycle is repeated. The heated gas from the turbine is forced out of the rear of the engine through an exhaust duct, or nozzle, to increase the velocity of the gas and create enough thrust to propel the aircraft through the air. Other types of jet engines include turboprops, turboshafts and ramjets. Although they differ slightly in operation, the overall concept is the same; air is drawn in, mixed with fuel, ignited and expelled from the rear of the engine to create thrust.

Related Searches


  • Photo Credit Chalabala/iStock/Getty Images
Promoted By Zergnet


You May Also Like

  • How Does a Jet Water Well Pump Work?

    Many people rely on water from a well to supply their homes. For thousands of years, manually operated pumps have been in...

  • How Does a Steam Jet Air Ejector Work?

    Pumps are devices used to move liquids or gases by displacing the material's volume. A steam jet air ejector is a kind...

  • How a ThunderJet Works on a Carburetor

    ThunderJet is the trademarked name of an aftermarket addition to motorcycle carburetors. ThunderJet-enhanced carbs are not legal for street use in California....

  • How to Make a Jet Engine

    If you are speed demon who is constantly looking for bigger and faster thrills, building your own jet engine is your type...

  • How to Test Jet Boat Engines

    Whether you are purchasing a jet boat for the first time or picking up a used boat from a previous owner, checking...

  • How to Start a Sport Jet Out of the Water

    A Sport Jet is a type of boat that is manufactured by the Mercury Marine Corporation. This style of boat is desirable...

  • How Do Rotax Engines Work?

    In many ways, Austrian manufacturer Rotax's signature two-stroke engines are just like any other two-stroke out there; they work in the same...

Related Searches

Check It Out

How to Travel For Free With Reward Points

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!