DA 50 EFI Mil Spec UAV Engine by HFE International features state of the art electronic fuel injection.

This mil spec version provides a proven fuel injection system. In service on over 700 aircraft, it has 67,000+ flight hours in various environments throughout the world.

Tested to 20,000 ft altitude and temperatures ranging from -10°F to 120°F, the system is a proven workhorse. 

This system followed the test methods under MIL-STD-810, testing out the majority of the laboratory methods available.

Alternator System Options

200W Power Management Unit

Features a 3 phase brushless alternator; it drives directly on the engine crankshaft. The stator is mounted to the crankshaft casing, with the rotor spinning on the crankshaft.

The PMU provides three lines with a chosen voltage in the range: 12 – 15 VDC at 15A or 200W max and 4.8 – 7 VDC at 7A or 42W max.

Configurable with LiIon, LiPo, LifePO4, SLA, NiCad, NiMH, and Lead Acid Battery.

24 V option available, contact HFE Int. for info and pricing.

500W Starter Alternator

This 3 phase brushless alternator drives directly on the engine crankshaft. The stator is mounted to the crankshaft casing, with the rotor spinning on the crankshaft.

The system can be paired with a 500 W Power Management Unit with an integrated starter controller, allowing the engine to start remotely. The PMU provides three lines with a chosen voltage in the range: 24 – 28 VDC at 12.5A or 350W max, 12 – 15 VDC at 9A or 108W, and 4.8 – 8 VDC at 8A or 42W.

Configurable with LiIon, LiPo, LifePO4, SLA, NiCad, NiMH, and Lead Acid Battery.

Custom Alternator

Custom options are available upon request. 

Contact HFE International to discuss your setup.

DA 50 EFI Mil Spec UAV Engine Downloads

DA 50 EFI Data Sheet

WOT Graph

About HFE International

HFE International develops and manufactures high end propulsion systems for UAV’s, drones, unmanned systems, and ground support equipment. These propulsion systems include fuel-injection and rotary systems with gasoline and multi/heavy fuel operation.

Founded in 2010, the company’s aim was to address the growing demand for reliable, small engines at an affordable price point. With over 1,000 units sold – at 25% the cost of the closest competitor – HFE engines are in use throughout the world including use by the US Armed Forces.