US Army successfully flies a hybrid electric drone with 3D-printed heavy-fuel rotary engine — 400v motor-generator uses advanced engineering to ditch a bulky liquid cooling system — News for Startups

US Army successfully flies a hybrid electric drone with 3D-printed heavy-fuel rotary engine — 400v motor-generator uses advanced engineering to ditch a bulky liquid cooling system

The engine drives a 400v motor-generator that electrically drives the propellers.

Tom's Hardware · 2026-11-04T10:30:00.000Z