Electrification of Aviation: Rethinking Propulsion for Ultralight Flight
Many of us have imagined what electric flight could feel like. Less noise, lower maintenance, simpler operation. No long pre-flight checks, no vibration from combustion, just smooth power and direct response. It sounds close, especially after seeing how fast electric cars have developed. But in aviation, the reality has proven more complex.
Most electric concepts today still rely on propellers combined with batteries or fuel cells. While this works in some cases, it does not fully use the advantages of electric systems. In practice, it often leads to aircraft that feel like weaker versions of what we already fly. Half the payload, half the cruise speed, double the takeoff run, and range which is too restricted for practical use.
We started this journey exactly where many builders are today, as a group of general aviation engineers aiming to build an electric aircraft. Going through that process, we quickly ran into the same limitations. It became clear that the issue was not only energy storage. The entire system needed to be reconsidered from the ground up.
The first major limitation we faced was propulsion. It is difficult to imagine future electric aviation relying on the same propeller concepts. Instead of continuing to adapt existing solutions, we stepped back and rethought propulsion from first principles. That is how POWERION was created, with the goal of building a system designed specifically for electric flight.
Our patented e-POWERFAN system is based on variable geometry, adjusting the size of air inlet and outlet, allowing the propulsion to adapt to specific demands of different phases of flight. During takeoff, the system can diminish the ground roll by sacrificing efficiency in favour of the short boost of extra thrust. In cruise, it consistently maintains the most efficient configuration to support minimum energy use for any selected speed. Onboard software manages these transitions in real time.
For ultralight aircraft, this brings practical advantages. Shorter takeoffs from smaller fields, smooth and quiet operation, and more consistent power during maneuvers. For aerobatic flying, it delivers readily available thrust boost without the risk of engine drop. For gliders, it removes the need for complex and heavy folding propellers. At the same time, the absence of combustion systems significantly reduces maintenance requirements and cost.
We believe the future of electric aviation will not come from copying existing aircraft, but from rethinking how they work. And as often in aviation, this change will start with ultralight pilots and builders. Ultralight aviation has always been the place where new ideas take flight. This is where real progress begins, and it is something we are building together.
