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.

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…