[I_dream_of_Geni]

This "new tech" is at LEAST 45 years old. I worked on the 7J7 technology. Called the UDF - Un-Ducted Fan concept.

https://en.wikipedia.org/wiki/Boeing_7J7

[wkat4242]

It also doesn't seem to be too different from a turboprop (which is also just a turbine with a prop stuck on of course). What are the technical differences between those?