The Power source

Hevetol’s hybrid powertrain harnesses the exceptional efficiency and low-emission capabilities of our proprietary Combustion Stirling Linear Generator (CSLG) which runs on eco-friendly fuels such as ammonia or hydrogen.

The pwertrain is complemented by a battery system to ensure a steady power supply and optimal electrical equilibrium.

  • CSLG net output capacity up to 2 000 kW
  • Battery capacity up to 70 kWh
  • Up to 30 Contra rotating ducted fans
  • Peak power capacity of 5 000 kW

The Hevetol can accommodate up to 1200 kg in weight or carry as many as 12 passengers.


The range of the Hevetol 12-12 is 2 370 km. It can be upgraded to 6 000 km.

  • Cruise speed 375 km/h
  • Top speed 675 km/h

Nominal cruise altitude 4 000 m

Turnaround time

10 minutes

Enter into service


Market Adaptation

Seamless Market Integration

Hevetol’s entry into the market promises minimal disruption due to its adaptability to existing fuel infrastructure.

Fuel Flexibility

Hevetol operates on ammonia and hydrogen, showcasing versatility in fuel selection while emphasizing environmental consciousness.


Hevetol stands out for its ability to self-charge its batteries, eliminating the need for any external battery charging infrastructure.

Utilization of Existing Fuel Infrastructure

The fuels Hevetol uses – ammonia and hydrogen – can be easily accommodated within current fuel distribution and storage networks.

Seamless adaptation of Hevetol

With these advantages, the integration of Hevetol 12-12 into the market becomes a smooth and streamlined process.



It just makes sense

With a full ammonia tank, the Hevetol could embark on a round trip from Stockholm to Berlin, while also powering up a battery-operated aircraft (up to 1,000 kWh) in Berlin. Remarkably, this entire operation could be executed at an equal or lesser cost compared to what the battery-operated aircraft would spend on charging alone.