A jet engine.
http://en.wikipedia.org/wiki/Jet_engine
Jet Engine is used in jets.
Steel, titanium and aluminium are all used in jet engines.
There is no actual answer, because a jet is called a jet because it has at least one jet engine.
They use both terms. A turbine engine that's being used in an aircraft is a "jet engine," and a turbine engine that's being used in a ground-based application is a "gas turbine." Sometimes it's the same engine--the Lycoming engine used in the CH-47 as a "jet engine" is also used in the M-1 tank as a "gas turbine."
Well yes, assuming if an airplane does not have a jet engine, it would not be called a jet.
av gas; i.e. aviation gasoline. Jet fuel.
jet engine
Frank Whittle was the invetor of the jet engine.
You can but a mini jet engine on ebay.
This relies entirely on the type of engine, a Turbofan engine is a type of jet engine. They are most commonly used on civil airliners but have also been used in military jet fighters, some of those jet fighters can approach Mach 2, which depending on altitude may be between 900 and 1,400 miles per hour.
For the same reason as a propeller, but faster and more efficient.
Yes, it is. They are used on the Boeing 777.