AIRCRAFT

Long-range HE passenger flight

Hero Block

Retrofit, battery replacement and new designs

Our scalable propulsion system is gaining traction with airlines, piston-engine owners, and developers of fixed-wing electric and eVTOL aircraft.

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 hydrogen-electric Beechcraft B1900D in flight

Stralis’ flight demonstrators Bonnie & Clyde

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Leaded aircraft fuel is being phased out

Worldwide 150,000 piston aircraft use fuel that will soon be banned. Our zero-emission system is designed to retrofit Beechcraft Bonanza 36, Cirrus SR22T, Vans RV-10, Mooney M20 and more.

Mooney M20

Retrofit and replace
Piston engine aircraft

We integrate our proprietary fuel cell system, liquid hydrogen tanks and electric motors into aircraft. Our system is designed to retrofit aircraft like the Beechcraft Bonanza 36, Cirrus SR22T, Vans RV-10, Mooney M20 and can replace a Continental IO engine.

Talk to our team

We are currently taking expressions of interest for Bonanza and piston engine retrofits

Learn more

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.

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