I’m a teacher and one of my 7-year-old students asked me this yesterday. So, can someone please explain it like I’m 5-7 years old please? Is it really as simple as the engine in the aircraft?
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A jet is an airplane propelled by a jet engine, specifically turbojet, torbofan, ramjet, scramjet, or pulsejet engines (though the latter three are rarely used, and only in specific military or scientific applications).
The key factor is that propulsive force is from a “jet” of accelerated gas that emerges from the engine itself.
Some airplanes use a gas turbine engine to drive a gearbox and propeller, which provides the airplane’s primary motive force. These are called turboprops. Turbo props and jets behave differently. Turbo props are much slower and travel at comparatively lower altitudes than jets. But turbo props produce much more power at low speeds, which makes them useful on shorter routes.
Propellor airplanes are commonly powered by piston engines too.
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