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Zell am Moss (A) After the AERO International Air Show in Friedrichshafen (DE) and the Aerospace Symposium in St. Gallen (CH), XAEROS AvioPower also presented the “XAEROS Hybrid Aviation Engine” project at the ILA Berlin. It’s not just a revolutionary aircraft engine, but a unique integrated hybrid system that will make flying safer, quieter and environmentally friendly.

Hans Schwöller, accomplished engineer and successful entrepreneur from Straßwalchen (AT), has been working on this unique project for several years, which is now so mature that detailed development has started with the support of investors and series production will begin within 4 coming years. .

The XAEROS Hybrid 200 integrates an electric motor and two independently operating piston motors into a very compact, fully integrated unit with a system output of 200 kW / 270 hp. This self-contained unit also includes all operating components as well as the drive battery.

Aircraft equipped with the optional XAEROS hybrid system can be operated completely silently at the airport thanks to all-wheel drive. A big advantage is the safe operation of the airport without a working fan. Hill acceleration is also quiet with the power-controlled wheels.

The electric propeller only works during take-off, so the plane glides very quietly at altitude and propels it electrically until it leaves the airport area. This minimizes noise pollution for airport residents.

After leaving the airport area, the pilot switches to two independently operating piston engines for gliding, which will be powered by synthetic fuels, called eFuels, in the future. E-fuel is made from carbon dioxide from air, water, and solar or wind power and emits exactly the same amount of carbon dioxide during aircraft operation as it was previously absorbed during fuel production. This means that CO2-neutral operation is also possible when cruising. E-fuels are easy to transport and can be produced inexpensively anywhere in the world where solar and wind power are available.

XAEROS’ unique hybrid solution provides safety in redundant flight while fully maintaining normal flight distances and performance. “The twin-engine offers huge safety gains,” says Hans Schwöller. “In the event of an engine failure, you can continue to fly safely and easily at half power.” When cruising, the battery is recharged so that it can approach and land very quietly, purely electrically.

Over several years of work, Hans Schöller and his son Johannes have succeeded in combining all three drives, including all components, into one very compact drive unit. Since the electric motor is only used for take-off and landing, the battery can be kept very small. It is also integrated into the autonomous drive unit. The combined unit provides twice the power to the aircraft as well as cockpit ventilation, heating and air conditioning if desired. “This is also unique to aircraft engines,” says Hans Schuller.

Despite the presence of three separate drives and the integration of all components, the width of the propulsion system does not exceed 50 cm and is narrower than a conventional “naked” 80 horsepower aircraft engine. The XAEROS Hybrid engine offers impressive performance from the 200 kW / 270 hp ventilation system. This concept was patented years ago. “In the meantime, the most important patents have already been granted in the EU, USA and China. Further patents are in the pipeline”, reports Hans Schuler.

Hans Schuler, managing director of XAEROS AvioPower GmbH based in Zell am Moos, is now looking for investors for a detailed implementation. The previous presentations as well as the following ones, such as ILA Berlin and AIRTEC Munich, are working to present the project to the public and to find investors. The development and series production site is determined in consultation with the investors. Over the next four years, detailed development is planned until the series matures and mass production begins. In addition to investors, funding will be raised through grants and mass crowdfunding.

“With XAEROS, we are launching a new generation of propulsion systems for general aviation. The response to AERO and St. Gallen has exceeded anything one could imagine,” reports Hans Schwöller, who wants to start the project as soon as possible.

“Obviously, we really got our hands on this project,” says Hans Schwöller. Johannes Schöller, son of the CEO, completed his education at the Technical University of Munich in mechanical engineering, carbon technology and partly in aerospace engineering and is on board XAEROS.

“The presentations were well received not only by pilots and aircraft manufacturers, but also by aircraft engine experts and aviation authorities. The presented concept was always emphasized as future-oriented and comprehensive,” says Hans Schuler. The propulsion system is a self-contained unit that fits into virtually all new aircraft and tens of thousands of existing aircraft that will be converted as soon as possible using a conversion kit and a documentation approved. Due to its special hybrid cooling, it can also be used for light helicopters and drones and as a redundant power supply for air taxis and eVTOL aircraft to significantly increase range. In various component variants, the engine will also be used for light aircraft, experimental and amateur construction aircraft. In the United States, it also covers the large LSA (Light Sport Aircraft) group.

Technical informations
hybrid system
74 kW / 100 hp (optional 110 kW / 150 hp) high-performance axial-flow electric motor (air-cooled, integrated inverter)
Two 4-stroke V2 piston engines, 2x 742 cc, 2x 63 kW / 85 hp
Motor power 200 kW / 270 hp
traction battery
2.4 kWh (standard), adaptive according to the aircraft, hangar autonomy at the exit of the airport zone at cruising altitude + reserve
2x carbon toothed belt transmission (free maintenance over 5000 hours)
fan speed
2100 rpm max, 1920 cruise rpm, so it’s very quiet!
WxHxW 500 x 510 x 790mm
Total system with integrated motor battery 120 kg
Non-registered plan in 4 years, certified from the fifth year

Xaeros AvioPower GmbH

Erlenweg 3, 4893 Zell am Mos
+43 676 5695500


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