The 1-foot long by 8-inch tall (30 by 20 cm) engine was built at GE Aviation’s Additive Development Center outside Cincinnati as a side project. The result of several years’ work, the purpose was to test the printing technology. It’s not the first 3D-printed jet engine, but it has been fired and revved up to 33,000 RPM.
GE says that the simplified design was necessary because building anything like a conventional commercial engine is beyond the present technology’s state of the art. The team therefore chose a design created for remote control model planes, which was modified for Direct Laser Metal Melting (DLMM) printing
Engineers at the University of Sheffield’s Advanced Manufacturing Research Center (AMRC), however, have taken things a step farther. They’ve made a 3D-printed UAV airframe that’s designed to minimize the amount of material needed in its construction, and that can be printed and in the air within a single day.
Point-and-click programming/configuration gets you up and operating without hassle
Multiple command modes: Acro, Stabilize, Loiter, Alt-hold, Return To Launchpoint, Land, Simple, Guided, Position, Circle, Follow Me, GeoFence, and Auto (which runs fully scripted missions using GPS waypoints)
Insanity by the Press (CNN could do hours each week on the horrors of home-made, jet powered, cruise missiles) and faster a knee-jerk from Politicians than a cash donation in a plain envelope.