Heavy Fuel Engines (HFE) for UAVs
Two-Stroke Multi-Fuel Engines for Fixed Wing and VTOL Drones
Our Heavy Fuel engines are available in one-, two- or four-cylinder models and have been tested under the harshest of conditions to ensure the highest performance and reliability. We can also provide our patented engine mufflers to further reduce noise levels.
Engines with a cylinder capacity of 20.68 cubic inches and higher are fitted with manually operated compression release valves as standard, with automatically operated valves available upon request. Engines with a cylinder capacity of 3.30 cubic inches are fitted with automatically operated valves as standard, reducing the load on the crankshaft if an external electrical starter is used, and allowing the engine to be stopped and restarted while the UAV is in the air.
All engines with a capacity of 55 cc or higher can be delivered as a twin-spark version, with independently operating ignitions. This provides quieter running, increased safety and reliability and redundant operation.