which propels the engine and the vehicle it’s attached to in the opposite direction. Simple, right? Right! Until the 3d printer comes in. Sadly for 3d printed parts, they are made of plastic.

He is joined on the paper by lead author Hyeonseok Kim ... best of each method," Velásquez-García says. But 3D printing the electrospray engine components is only half the battle.

[Camden Bowen] recently 3D printed a single-piston engine which nearly worked, and is back with some improvements to it thanks to a small carburetor. The carburetor itself isn’t 3D printed ...

Beehive Industries, a company that 3D prints jet engines for unmanned military vehicles, will ramp up production at its ...