Move over, batteries: green hydrogen is the key to getting flying taxis off the ground
Skai plans for a future of green hydrogen-powered VTOL aircraft
Why is Skai using hydrogen, not lithium-ion batteries?
Firstly, I was curious whyhydrogeninstead of Lithium-ion batteries. Morrison said:
“Lithium-ion batteries scare me.” He recalled the Boeing 787 lithium-ion battery fires in 1987. Boeing had delivered the aircraft to the airline just 18 days prior. In that time, the plane logged 22 flight cycles without incident.
Another 787 made an emergency landing in Japan after pilots received a battery malfunction warning five days later.
These two events led the FAA to ground the entire 787 fleet. It was the first time the agency had given such an order for a line of aircraft since 1979.
As Morrison explained:
Morrison has an extensive history in aviation, including developing black box recorders. He recalled:
A lonely approach to aircraft innovation
Morrison refocused on hydrogen fuel cells, noting a family history. His dad was a senior program manager on the Apollo program — the Apollo mission used fuel cells to generate electricity. He filed the first patents in 2013, and he notes:
How receptive is the FAA to a hydrogen VTOL like Skai?
Morrisonn has a long history of involvement in flight certifications for Boeing and Airbus.He explained:
According to Morrison, the biggest challenge from the FAA standpoint was the uniqueness of the vehicle:
VTOL production is a highly competitive space
How does the Skai team stack up to other founders in the space? Morrison said:
Long-distance flight with easy refueling infrastructure
The Skai is being made to handle a four-hour flight without the need to refuel. It’s able to land almost anywhere as it hasn’t the refueling infrastructure limitations of traditional eVTOLs.
As Morrison asserts:
He also noted that nobody wants to talk about the emissions behind the energy produced by megawatt eVTOL battery chargers.
Skai has signed a deal with Orbital Marine in the UK to take tidal energy from the River Thames and convert it to green hydrogen. Definitely a powerful collaboration.
What’s the market for a hydrogen VTOL like Skai?
So, who’s going to fly in a Skai?
Emergency responders and the US National Guard are a crucial audience for Skai, especially when they otherwise can’t access jet fuel due to flooding.
Further, the National Guard can operate under military authority, exempting them from FAA certification requirements. This makes it possible to build and deliver vehicles to the National Guard much earlier.
Cardinal missions are also a focus. In these, VTOLs are operated to offshore locations ahead of FAA certification carry supplies, providing an opportunity to gain experience with a vehicle.
But everyday aviation is also in the works too. Skai has a letter of intent with a LA company to buy 40 vehicles to start and an option for as many as 1320 vehicles for traditional people moving.
Of course, the challenge is getting from idea to end product.
The economy of scale
One of the biggest problems in aviation has been an inability to scale. As Morrison explained: “They see mass production across the entire industry as producing 900 aircraft a year. That’s not mass production.”
Alaka’i’s goal from day one has been to design a vehicle with automotive standards. Thus, an automotive-style production line makes it easy to scale. According to Morrison:
If you ask me, cheaper production costs make it possible to achieve mass production. Cheaper aircraft also means more affordable flights. So while Skai won’t be first in the sky, it does offers a green pathway into the future of aviation. And that’s never been more critical than now.
Story byCate Lawrence
Cate Lawrence is an Australian tech journo living in Berlin. She focuses on all things mobility: ebikes, autonomous vehicles, VTOL, smart ci(show all)Cate Lawrence is an Australian tech journo living in Berlin. She focuses on all things mobility: ebikes, autonomous vehicles, VTOL, smart cities, and the future of alternative energy sources like electric batteries, solar, and hydrogen.
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