Hirth is a pioneer of two stroke engines for light and recreational aircraft, UAVs (unmanned aerial vehicles) including the leading heavy fuel propulsion system for maritime rotary VTOL (vertical takeoff & landing) unmanned helicopters, snowmobiles, hovercraft and fire engine pumps. Hirth has solid foundations in European-heritage, German technology expertise and track record is backed by engineering excellence and innovative business practice. Hirth's international presence allows worldwide adoption of its industry-leading engineering solutions. The company manufactures from its production site, including R&D facilities at Hirth Engines GmbH (HE), Benningen, north of Stuttgart, Germany. The global sales entity Hirth Global Sales GmbH (HGS), based in Vienna, Austria is responsible for direct sales to OEMs (original equipment manufacturers) and a global dealer network.