FutureFlight
Swiss Start-up Sirius Unveils Hydrogen-powered VTOL 'Business Jet'
The hydrogen-electric Sirius Jet will come in two variants tailored for private aviation and commercial air taxi operations.
A digital rendering of the Sirius Business Jet and Sirius Millennium Jet side by side
The three-passenger Sirius Business Jet (left) is expected to be able to fly up to 1,150 miles before refueling, while the five-seat Sirius Millennium Jet (right) has a range of 650 miles. (Image: Sirius Aviation AG)

Sirius Aviation has revealed the design for its Sirius Jet, a hydrogen-electric VTOL aircraft it describes as a 'business jet.' The company intends to have the aircraft certified and in service by 2028 and will offer two variants, one tailored for private use and the other for commercial air taxi services. 

The private-use Sirius Business Jet will accommodate one pilot and up to three passengers and have an anticipated flight range of 1,150 miles (1,850 kilometers), whereas the larger Sirius Millennium Jet seats up to five passengers and can fly just over half that distance, with a range of 650 miles (1,050 kilometers). Both versions should be able to fly at altitudes of up to 30,000 feet at a cruise speed of 323 mph (520 kph). Refueling the aircraft, which involves pumping the hydrogen fuel cells full of hydrogen gas, will likely cost around $500, according to Sirius.