Eviation, a Washington State-based startup aiming to be one of the first companies to produce electric planes for commercial use, says its electric planes due in 2027 will make air travel less costly and cleaner:
The Alice is a nine-seater aircraft with a length of around 57 feet and a wingspan of 62 feet. These dimensions put it in the ballpark of a Cessna Citation Excel or a Piaggio P.180 Avanti. “I like to say that we found the sweet spot for electric aviation with this aircraft: we have a nine-passenger plane,” Aviation CEO Gregory Davis told InsideEVs. “You can fly with a single pilot in North America, so it means that it is more cost-effective to operate than a ten-passenger plane where you need two pilots.”
Keeping this plane flying in the air requires significant research and development — and that starts with the battery. Namely, the Alice stores a 900kWh battery pack in its underbelly. “In terms of the size of the battery, it is an 8,000-pound battery,” says Davis. “That 8,000-pound battery is fairly similar to what a full fuel load on a plane that size might weigh,” Davis told InsideEVs. “It actually works out well inside the existing rules for aircraft sizing.”
The 900kWh battery pack gives the Alice a range of around 250 nautical miles (with an additional 30 minutes for reserves), meaning it’s geared strictly for short-distance travels.
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We need to have a good battery life, but it doesn’t need to be a 20-year battery. What we’re actually doing is designing our battery to be a 3,000-cycle or 3,000-hour battery, and they’ll get replaced during routine maintenance. We make sure that you’re also operating in the top 10% of battery utilization.”
Interestingly, aircraft turbine engines need to be rebuilt around every 3,000 cycles, and after several rebuilds, they’ll need to be replaced entirely.
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“For the aircraft, electricity that is derived from the grid is between 30 and 70% cheaper than aviation fuel, and that’s in today’s environment,” Davis told InsideEVs. Besides the fuel cost savings, electric motors providing thrust will be less maintenance intensive than a turbine engine. “The electric motors are so much less costly to maintain than a traditional turbine engine,” Davis said.
But ditching the turbines comes with an unexpected benefit. Namely, the plane won’t have to reach 30,000+ feet to achieve maximum efficiency.
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The ability to fly lower also means that Alice won’t have to spend more time climbing, which is a highly energy-intensive task. Along with cutting down carbon emissions, the Alice will also reduce noise pollution, an adversary of residential communities located near airports. “One of the advantages of an electric aircraft is that it’s very quiet. It’s incredibly quiet, especially compared to a turbine aircraft,” Davis said. With the quieter flight, these planes might be allowed to fly into airports with curfews during off-hours, like John Wayne Airport (SNA) in Irvine, California.
“The idea is that with an {electric} aircraft, you can access the airport infrastructure at 2:00 in the morning to do an overnight package delivery,” Davis told InsideEVs. “That rapid point-to-point package delivery for the freight provider is {highly beneficial}. Being able to knock twelve hours off your delivery time is very valuable to freight companies.”