Development of a hydrogen powertrain for a Swiss Lightwing AC4
Cellsius' vision is to be able to operate aircraft in the future in a climate-neutral, efficient and sustainable manner. To this end, Cellsius Project H2 is researching an alternative hydrogen powertrain that will power a small aircraft in the future!
Our powertrain consists of many components that together can get an airplane into the air.
To make this a reality, we develop a large part of our components ourselves, tailored to our requirements.
Thus, our developments range from the design of pressure tanks, to the development of our own
High-performance inverter up to the own electric motor.
Our unique powertrain consists of many technical submodules, all of which must work together in an orderly fashion for our aircraft to take off.
We are happy to briefly present the components that are installed:
Power: 75 kW
Weight: 7 kg
Capacity: 5.8 kWh
Voltage: 648 V
Battery Power: 30 kW
Nom. Power: 65 kW
No. Plates: 280
Weight: 68 kg
Pressure: 700 bar
Content: ~8 kg H2
Our new engine will be installed in a Swiss Lightwing AC4. Modifications will be made to the airframe so that it will fit perfectly.
The performance of our drivetrain is optimally matched to that of the AC4.
Fuel Cell System
The heart of our powertrain is a 65 kW hydrogen fuel cell. It supplies the energy needed for a flight from hydrogen.
The hydrogen is carried in several pressure tanks with 700 bar aboard the aircraft. This allows us to achieve a flight time of up to 2.5 hours.
To absorb power peaks during take-off or a go-around, a battery module with a total capacity of 5.8 kWh is installed. The batteries are liquid-cooled and can be recharged in flight by the fuel cell.
Central to making our aircraft take off is an efficient and powerful electric motor. To optimally meet our requirements, we design and manufacture the radial flux motor ourselves, in partnership with e+a.
For the operation of an AC motor with batteries and a fuel cell, an inverter and a DC/DC converter are essential. Both are developed inhouse, so that they fit perfectly to our system.