Printing a model jet engine is quite an accomplishment. But it wasn’t enough for [linus3d]. He wanted to redesign it to have a turbojet, an afterburner, and a variable exhaust nozzle. You can see how ...

An Ursa Major employee prepares a Hadley engine chamber for transport after 3D printing is complete at the company’s Youngstown, Ohio, manufacturing facility. Credit: Ursa Major WASHINGTON — Ursa ...