The cooled, radial gas turbine was created with a 3D printer that can craft layered and highly detailed metal parts. (Southwest Research Institute)

A cooled, radial gas turbine was developed that provides thousands of hours of electricity to an unmanned aerial vehicle (UAV), a significant improvement to current UAV turbines that only operate a few hundred hours before wearing out.

To create the small, intricate design with internal air passages, engineers used selective laser melting, which builds metal parts layer by layer.