Aircraft

Surprise test flight heralds ultra-long-range electric aircraft by 2028

Surprise test flight heralds ultra-long-range electric aircraft by 2028
High-density batteries could be huge for electric passenger aircraft
High-density batteries could be huge for electric passenger aircraft
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High-density batteries could be huge for electric passenger aircraft
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High-density batteries could be huge for electric passenger aircraft
CATL says it's ready for mass production of super-dense 500-Wh/kg lithium batteries
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CATL says it's ready for mass production of super-dense 500-Wh/kg lithium batteries

Chinese battery giant CATL says it's successfully flown a 4-ton plane using its ultra-high density "condensed batteries." It now expects to have an 8-ton electric aircraft with a range of 2,000 to 3,000 km (1,240-1,865 miles) operating in 3-4 years.

Contemporary Amperex Technology Company Limited (CATL) is the current world leader in manufacturing batteries for electric vehicles, owning 37% of the entire market share. Nearly every major car manufacturer, from Ford to Tesla, is using CATL batteries.

In April of 2023, CATL announced its "condensed battery" packing over twice the energy density of nearly anything else on the market at an incredible 500 Wh/kg. For reference, a typical lead acid car battery can have upwards of 50 Wh/kg, while lithium-ion EV batteries like those in the Tesla Model 3 can pack up to around 265 Wh/kg.

CATL says it's ready for mass production of super-dense 500-Wh/kg lithium batteries
CATL says it's ready for mass production of super-dense 500-Wh/kg lithium batteries

The company says the condensed battery was designed with safety and weight in mind – specifically to be aviation-grade, with the expectation of being used to boost the range of clean aircraft.

Three months after that announcement, CATL established an aviation division, partnering with Commercial Aircraft Corporation of China (COMAC) – a Chinese state-owned aviation company.

And things have moved very quickly since then. On Tuesday, CATL announced that it has successfully test flown a 4-ton aircraft on battery power. The craft's battery bank, engine configuration, any data regarding flight length, altitude, or speeds all appear to be closely guarded state secrets at the time of writing, but ChinaDaily reports CATL is aiming to have a commercial electric aircraft with a range of 2,000 to 3,000 km (1,240 to 1,865 miles) ready by 2027 or 2028.

An 8-ton aircraft is a far cry from a 31-ton Boeing 737 or a 41-ton Airbus A320, but a Learjet 70/75 weighs in at just over 7 tons and can fly with nine passengers on board, which appears to be the market CATL is initially targeting.

The promised range figures far exceed any clean passenger aircraft currently flying. Even futuristic battery-electric airliner concepts like the Elysian E9X promise no more than 1,000 km (621 miles), and we're not seeing range promises anywhere near this even using liquid hydrogen fuel – so if CATL can do what it claims, this is indeed a giant leap in aviation technology.

Chinese aviation authorities have already demonstrated a willingness to push forward with futuristic electric air transport by fully certifying eHang's eVTOL air taxi operations years before US or European regulators are ready to greenlight similar commercial aircraft in the West.

On the other hand, the more energy per weight any given battery carries, the higher the likelihood of thermal runaway issues, and the more spectacularly destructive the outcome becomes when things go wrong. Five hundred Wh/kg is a very frightening number in that context, so we certainly hope safety testing is first, second and third priority as CATL works to get this remarkable aircraft into service within a few years.

Source: ChinaDaily

8 comments
8 comments
Rocky Stefano
I had to jump through hoops just to ship tiny ultrathin batteries via UPS air. I don't understand how they plan to negate those same issues and integrate it with an airplane.
vince
Batteries with over 1000 wh/kg are almost ready for production. And a plabe doesnt need as much shielding for plane accidents as they do for car accidents so the skin of the plane can actually function as one side of a battery. In this way weight is reduced and range extended even more. Probably enabling 1000 mile planes for 100 pasengers at 300 mph.
windykites
How about assisted take off with a tow line, as used with gliders? That would save a lot of battery energy. Also regenerative braking on landing.
Rusty
LOL, I'd get on one of these Chinese battery powered aircraft...about as much as I would get on a Boeing 737 MAX
Steven Clarkson
@Rusty
Why is that ??
Chinese manufacturer Ehang holds the Record for most comnercial flights without any fatalities !

Time to update your knowledge and understanding of chinese technology, everything is made there these days ;)
NP75
I'm with Rusty. The Chinese are not far removed from only copying Russian / Soviet aircraft. I would not get on a Chinese plane regardless of powerplant.
Towerman
I side with Steven Clarkson hands down. Real life Use of Chinese aircraft proves any negative comments wrong. Many already j7mping into Chinese Electric aircraft not One have had a bad experience. Technology have changed, while the west doesnt even have one commercial Evtol operating, China is accumaliting hours heading towards the thousands, the China of yesterday is not the China of today.
MattII
@Steven Clarkson, How sure are we that there's been no fatalities? The Chinese government isn't overly keen on reporting its failures after all.

@Towerman, How long have these aircraft been operating for? Remember, the De Havilland Comet enjoyed years of service before its faults came to light.