The European Space Agency has a way with names. This is in their image library as “Engine.”
The description offers little more detail: The ducted fan engine of the Lilium aircraft.
A Lillium aircraft is one of these, a vehicle that looks like something out of Blade Runner or The Fifth Element. The technology is called Vertical Take-Off and Landing; it’s a VTOL aircraft that claims to be able to act like a taxi between London and Paris in an hour.