UEC presents APD-13 and M105 piston engines at INNOPROM in Yekaterinburg

United Engine Corporation (UEC), the state-owned engine manufacturer within Rostec State Corporation, unveiled its newest piston engine for civil drones, the APD-13, at the INNOPROM International Industrial Exhibition in Yekaterinburg. The 13 hp engine has already completed both ground and flight trials.

Also on display is the M105 engine for light aircraft. The product is in the final stages of obtaining the developer’s certification from Russia’s Federal Air Transport Agency, Rosaviatsia.

Together, these projects broaden the range of engines available for civil unmanned aerial vehicles and small aircraft.

APD-13 piston engine for civil drones

The APD-13 is a two-stroke, air-cooled, two-cylinder aircraft piston engine developed using advanced technologies and engineering solutions. With a mass of 3.4 kg and relatively compact dimensions, the APD-13 delivers 13 hp. It has a displacement of 130 cm³ and a piston stroke of 37.5 mm. The engine can power civil UAVs (Unmanned Aerial Vehicles) at altitudes of up to 3,000 metres (9,800 feet).

“A large collaboration of companies within Rostec State Corporation is working on the development of unmanned systems. UEC’s aim is to provide our colleagues with reliable, efficient and affordable engines. The APD-13 prototype, developed by the corporation’s specialists, has undergone a series of ground and flight tests, including on a test bench, demonstrating reliable operation across the full range of operating modes and confirming technical characteristics comparable to foreign analogues. This year, we also plan to expand our range of aircraft piston engines by creating a 6 hp unit,” noted Yuri Shmotin, UEC’s General Designer.

Fuel use, mixture formation and ignition

The APD-13 is designed to achieve optimal fuel consumption. External mixture formation lowers cylinder loading, supports strong environmental performance, and enables effective fuel-use regulation across different operating modes. The use of forced spark ignition provides dependable starting and allows flexible control of power output and fuel economy, while maintaining stable running across a range of RPM (Revolutions Per Minute) regimes.

M105 engine for light aircraft and autogyros

INNOPROM is also showcasing the more powerful M105 piston engine, intended for installation on civil light aircraft and autogyros. With competitive technical characteristics, it is positioned as a replacement for imported equivalents.

The M105 is a compact, fuel-injected, four-stroke, four-cylinder, turbocharged aircraft piston engine producing 115 hp. Despite its output, it weighs only 75 kg, with a displacement of 1,211 cm³ and a stroke of 61 mm.

A key benefit is its operational performance. Thanks to its modern design, the engine can be used in aircraft for 10 years, with a specified service life of 2,000 hours and an overhaul interval of 750 hours. UEC is currently finalising the engine’s developer certification with the Federal Air Transport Agency.

Information from Rostec