Sirius Aviation is to launch a range of hydrogen powered, zero-emission Vertical Take-Off and Landing (VTOL) aircraft in 2025.

Sirius Aviation unveiled two zero-emission jets in January. Designed in collaboration with BMW’s Designworks and the Sauber Group, the jets will be powered by a groundbreaking hydrogen-electric propulsion system that will enable quiet, carbon-free travel.

The Sirius Business Jet
The business jet is geared toward private fliers, with space for up to three passengers. The craft will be able to cruise for up to 1,150 miles at speeds of up to 323 mph and altitudes of 30,000 feet. In addition, it promises ultra-low noise levels of just 60 decibels.

The fusion of technologies that combine vertical take-off and landing with horizontal flight allows aircraft – to conveniently take-off and land as a helicopter, and fly as fast and energy-efficient as an airplane.

• Flight Distance: 650 Miles (1050 KM)
• Cruise Speed: 323 MPH (600 KMH)
• Low Noise Pollution: 60 DB)
• Passenger Capacity: 1 Pilot, 5 Passengers

The Sirius Millennium Jet
Conversely, the Sirius Millennium is intended for commercial jaunts and can accommodate up to five passengers. The Millennium has all the same performance figures as the business jet, save for range. The extra seats mean the craft has less room for hydrogen tanks and therefore offers a reduced range of 650 miles. That’s still good enough for regional flights, though.

• Flight Distance: 1150 Miles (1850 KM)
• Cruise Speed: 323 MPH (600 KMH)
• Low Noise Pollution: 60 DB)
• Passenger Capacity: 3 Passengers

KEY FEATURES

Deflected Vectored Thrust
A propulsion system that allows operating the jet with a low noise emission level.

28 Ducted Fans
This type of propulsion system reduces noise emissions. 20 fans are located along the wings, 8 mounted in the canard. A separate electic motor drives each ducted fan.

Saves Travel Time
Sirius Jet is a zero-emission plane and has no environmental impact.

Cost Efficient
the total cost for a full fuel tank refill, covering the maximum travel distance, is a mere 500 USD.

Silent
Featuring a near-silent operation, our aircraft produces ~95% less noise compared to a helicopter, allowing it to operate close to communities with a minimal noise impact of <60 dBA at 100 meters distance, equivalent to the sound level of a dishwasher.

Safe
in the event of a critical emergency, the Sirius Jet’s Emergency Parachute System is programmed to deploy automatically, providing an additional layer of safety assurance.

The Sirius jets could well set a new industry standard in terms of flight distance and speeds. For context, the fastest known eVTOL in development, the Joby S4, has a top speed of 205 mph and a 150-mile range. As for VTOLs, Horizon Aircraft’s hybrid Cavorite X5 is expected to have a max speed of 280 mph and a range of roughly 500 miles.

The Sirius aircraft, of course, will reportedly be the first hybrid VTOL to run on hydrogen rather than jet fuel or a battery. Hydrogen has three times more energy per unit of mass than conventional jet fuel, and more than a hundred times that of lithium-ion batteries. It is worthwhile pointing out that there are several companies already testing hydrogen on planes, but none have gotten the fuel certified or greenlit for commercial use.

There are few details about the actual design of the Sirius fleet. Sirius has said the aircraft will combine the aerodynamics of a jet with the versatility of a plane or helicopter. The startup has also shared that the jets will use a deflected vectored thrust system comprising 20 electric ducted fans to take off vertically.

A Commitment from Sentinel Aviation
Just to re-iterate our stance with regards to zero-emission aircraft travel. Sentinel Aviation commits to defining a long term sustainable future for the private aviation sector. We aim to be fully carbon neutral across our entire business by 2025 – reducing climate impact of our flying.

To this end, we are partnered with Pelorus Foundation, supporting their Climate Investment Fund which funds grassroots projects that balance carbon emissions. Our contributions to this fund demonstrate just one of our actions and commitment towards a future of sustainable travel.

When you fly with Sentinel Aviation, you have the opportunity to balance your carbon emissions through Pelorus Foundation’s Climate Investment Fund.