Fuel Cell Integration

Fuel cell implementation begins

SKY-WATCH is now moving from testing on 3D printed prototypes to testing on a “dummy version” of the fuel cell. They are now working hard on establishing a stable baseline in the lab as preparation for the prototype from Kraftwerk that is already under way.

First initial steps of testing regulation and sensors
Fuel Cell Integration

Component verification

We have been working hard in on component selection. SKY-WATCH have been verifying functionality and regulation of the individual components.

Fuel Cell

Insulation concept is working

After establishing a simplified version of the hotbox SKY-WATCH was able to verify that the fixation and thermal materials are functioning as intended. Insulation concept is working A central core was heated to more than 800 °C and studied for material degradations in any functional areas.

Thermal insulation - Cold frame for fixation and insulation.

After verifying the concept SKY-WATCH engineered the coldframe that will function as mechanical interface for the hotbox/fuelcell unit. Next step is to verify components and start integration…

Fuel Cell UAV

Platform flight completed

In march SKY-WATCH completed several successful test flights. We now know the limits of our test platform and we can switch from vertical to horizontal flight.

The flight was done with extra weight and no fuel cell.


Initial Fuel Cell Test


Going Beyond

Heidrun EO-IR
Heidrun EO-IR

Throughout the last 10 years Sky-Watch have strived to push the boundaries of mini UAV systems to create the maximum value for our end-users. The lastest step on this path was taken in December 2019 where the UAVEndure II Project was officially launched. Supported by EU the project partners is working to bring to market a game changing technology that can disrupt the global UAV market by enabling small low cost UAVs to perform jobs that normally is reserved for large unammend or manned aircrafts.

As EU opens the airspace for UAV operations that goes beyond the line of sight the need for range within the commercial UAV applications will develop exponentially. The UavEndure II project will be the foundation for exploiting these future civilian market opportunities within cargo transport, agriculture and environmental monitoring where range is crucial.

Fuel Cell

Heart of the Fuel Cell

Kraftwerk Tube
The fuel cell stack consists of several tubes like this held by Dr. Sascha Kühn.

Electric power required for UAV flight traditionally comes from it’s battery. So the flight time is relating to the battery capacity but also limited by its weight. Using an adaptive fuel cell to reload the battery while in the air is changing that game.

Now the battery is only needed for peak consumption at startup and as a fail-safe backup. This allows the use of smaller and lighter batteries. The fuel cell can deliver constant energy to extend the flight time by a factor 20 and above.

Dr. Sascha Kühn is holding one of the tubes which are generating that electrical energy at a very high efficiency. A scalable stack of the tubes – depending on the estimated power needed – is providing the energy flow for any size of UAVs.

The adaptive fuel cell stack itself can run on propane/butane liquid gas or hydrogen. Limitations to operation time now scales only with fuel and fuel tank weight, which is tremendously more efficient than the correlation between battery capacity and its weight.



Støvring – Denmark

On the 14th of January, the project partners met at Sky-Watch’s administrative facilities to officially start off the project.

The consortium agreed on initial code of conduct, meeting and reporting structure. This means we are now ‘good to go’ on the project – expecting the first prototype this year!

More to come…