Jet engine
A jet engine is any engine that creates force by releasing a high speed jet of a liquid or a gas.
An example of a jet engine is a full balloon that is not held closed. It will release the air and push the balloon forward.
Turbojet engines are used on airplanes. Turbojet engines have a gas compressor, a kind of fan, at the front that takes in air. The engine burns fuel to make the air expand, and it blows a big wind out the back. On the way out, the hot air turns another fan (a gas turbine) which turns the rod that turns the fan at the front to make it go.
Another kind of a jet engine is a rocket engine. Ramjet and pulse jet engines are rarer kinds of jet engine.
Jet Engine Media
Jet engine during take-off showing visible hot exhaust (Germanwings Airbus A319)
The Whittle W.2/700 engine flew in the Gloster E.28/39, the first British aircraft to fly with a turbojet engine, and the Gloster Meteor
Heinkel He 178, the world's first aircraft to fly purely on turbojet power
A cutaway of the Junkers Jumo 004 engine
Gloster Meteor F.3s. The Gloster Meteor was the first British jet fighter and the Allies' only jet aircraft to achieve combat operations during World War II.
A JT9D turbofan jet engine installed on a Boeing 747 aircraft.
Diagram of a typical gas turbine jet engine (in English). Air is compressed by the fan blades as it enters the engine, and it is mixed and burned with fuel in the combustion section. The hot exhaust gases provide forward thrust and turn the turbines which drive the compressor fan blades.
Schematic diagram illustrating the operation of a low-bypass turbofan engine.
Force diagram for rocket engine thrust.
Pump jet*source: adapted from US Patent #6682373 Pud 23:24, 1 Aug 2004 (UTC)
Other websites
- Jet Engine at Citizendium
