UAV

Cargo delivery HE endurance

Hero Block

Electric battery replacement and new designs

When batteries tap out, Stralis systems keep going with hydrogen-electric long-range endurance with large payloads for high-volume commercial use cases.

Stralis–HE
A hydrogen-electric fuel cell system designed for endurance

Aviation is electrifying, but batteries alone are limited. Our scalable hydrogen-electric system integrates a fuel cell, liquid hydrogen tanks, and electric motors for UAVs and aircraft. Our technology is 6x lighter than the current state of the art, enabling up to 30x longer flights and a greater payload than battery-electric.

Stralis cargo drone carrying payload over mountainous terrain

Stralis’ UAV flight demonstrators

Stralis UAV demonstrator
Stralis Defence Event March 2026
Stralis UAV demonstrator
Stralis testing updates

Aviation is electrifying but batteries alone are limited

Batteries limit payload and range. Existing fuel cells extend range but still constrain payload. Stralis hydrogen-electric propulsion unlocks long-range flight with large payloads for high-volume commercial use cases.

Aircraft developers
Fixed wing electric and eVTOL

Our hydrogen-electric propulsion system can upgrade battery-electric aircraft, replace conventional engines, and be integrated into new aircraft designs.

Talk to our team
Wisk eVTOL
Stralis fuel cell assembly

Hydrogen-electric propulsion
For UAVs and aircraft

Our scalable patent-pending tech is 6x lighter than current state-of-the-art, enabling up to 30x longer flights than battery-electric.

How our technology works

Join us to propel hydrogen-electric aircraft and air travel forward.

Footer Graphic