HFE International LLC

HFE International is a leading manufacturer and developer of high-reliability fuel injection engines, rotary engines and ground support equipment for drones and UAVs (unmanned aerial vehicles).

Our gasoline and multi/heavy fuel unmanned propulsion solutions are ideal for a wide variety of small UAVs, and are used throughout the world by the U.S. Armed Forces and other high-profile customers. As proof of our ongoing commitment to quality, we are ISO 9001:2015 certified and continually strive to improve customer satisfaction through our superior-quality products and engineering services.

DA70 GenPod – UAV Engine

Easily field-swappable EFI engine for UAVs

The DA70 GenPod is an easily field-swappable engine that dramatically reduces operational downtime.

The entire system, including electronics, fuel pumping system, EFI, ignition, and motor mount isolation, can be removed by simply flipping two clips, saving significant time and costs during scheduled maintenance.

The DA70 GenPod can be integrated into new UAV designs with a minimum of effort, requiring only a power supply, fuel tank connection and throttle position signal. The built-in starter requires only a 5V signal, providing up to 500 W of electrical power for the avionics system and featuring integrated power management.

All GenPod engines include a silent muffler set that reduces acoustic signature and acoustic non-detectability altitude. The unit is available in pusher or tractor configuration, and different cowling options are available upon request.

EFI Engines for UAVs

Highly efficient, UAV electronic fuel injected engines

The DA series of UAV engines features state-of-the-art electronic fuel injection technology for high-efficiency operation, and a special magnet configuration in the propeller hub for easy starting. The built-in engine control module (ECM) can be powered by a single 3-cell Lipo battery of capacity 1500mah or greater, with a total power draw of only 12 watts (1 amp) at full throttle.

All DA engines for UAVs have been tested from sea level to 10,000 ft altitude, and at temperatures ranging from -40°F to 140°F

Comparison & Specifications:

Mil-Spec UAV Engines

MIL-STD-810 tested EFI engines for UAVs

HFE International offers mil-spec versions of its DA engine series for UAVs, featuring a state-of-the-art fuel injection system that has been in real-world service on over 700 aircraft and has flown more than 67,000 hours in a wide range of environments around the world.

All mil-spec DA UAV engines have been tested to MIL-STD-810, at altitudes up to 20,000 ft and at temperatures ranging from -10°F to 120°F.

Learn more about our facility and work processes:

Battlefield Endurolink Fuel System Parts

HFE International provides a range of Battlefield Endurolink aerospace-grade couplings, fittings and valves for UAV fuel systems. These compact and lightweight parts are designed to withstand the harsh conditions of demanding UAV applications, and are compatible with all major fuels including gasoline, diesel, kerosene, JP5 and JP8.

Constructed from lightweight anodized aluminium and nickel-plated brass, with GFLT seals, Battlefield Endurolink UAV fittings have been proven with over a million successful flight hours.

Volz UAV Servos Actuators

Volz UAV servo actuators are high-precision units designed to withstand the high vibration and extreme temperatures of unmanned aircraft environments, and are ideal for critical actuation systems such as UAV engine throttles. The DA actuator series features all-steel gear trains and are fully programmable.

The DA 13 and DA 14 series of 13mm actuators have the same dimensions and are fully interchangeable.