Remarkably, a modern jet engine can look and function a lot like a big
propeller.
>
http://arstechnica.com/science/2015/02/lets-talk-about-jets-baby-jet-engines-to-be-more-precise/
> I remember an occasion when I was young when my dad and brother and I
> took a flight on a small regional plane, probably on one of our
> annual ski vacations. The little plane was a turboprop, and it was
> the first time I’d been on a plane with actual propellers—every other
> commercial flight I’d had at that point in my young life had been on
> jets. Already a nervous traveler, I’d told my dad that I hated the
> idea of our flight being dependent on the two visible fast-spinning
> props. A jet engine, with its cowling and apparent motionless magic,
> seemed a lot more sensible way to provide thrust.
>
> "Fast spinning propellers?" my dad said. "When you look at a jet
> engine, what do you see in the front? A big fast-spinning turbine!" I
> realized he was right—jet engines weren’t immutable chunks of
> high-technology. They had a giant fan at the front, pushing air
> through just like a propeller! This probably triggered some kind of
> panic attack and I probably started crying or something, because I
> was pretty whiny about flying.
>
> Still, it was eye-opening. When I visited GE’s Global Research Center
> in Munich last month, I heard quite a bit about how GE’s aviation
> division makes jet engine turbine blades out of carbon fiber—which
> seemed like the perfect branching off point for an explainer about
> the different types of jet engines. And it surprised me just exactly
> how insightful my dad’s long-ago comment turned out to be. As it
> turns out, a high-bypass turbofan like you’d find on most modern
> airliners really is like a giant propeller.
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