Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Does an A220-500 need a new wing and engines? Part 4. July 3, 2025
- GE testing of giant GE9X engine aims for maturity at entry into service June 30, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 28. June 27, 2025
- Parent agency, FAA often at odds as politics outweighs safety June 26, 2025
- Electric Flight and the Ugly Duckling June 25, 2025
Electric Flight and the Ugly Duckling
By Bjorn Fehrm
June 25, 2025, © Leeham News at Paris Air Show: The low or no emission propulsion discussion started at the 2014 Farnborough Air Show when Airbus’ E-Fan prototype flew in front of a surprised crowd. Everyone then thought that low-emission electric propulsion aircraft would be common before 2020.
It took 11 years and as many air shows before a certifiable battery-electric aircraft would fly again at an air show, this time at the 2025 Paris Air Show (Figure 1). Of the over 100 announced projects to develop and produce a battery electric passenger aircraft, it was the Alia CX300 from BETA Technologies that succeeded.
The story of BETA Technologies’ Alia CX300 is, in many ways, the story of the Ugly Duckling that grew to become a White Swan.
Figure 1. The BETA Alia CX300 battery-electric cargo version ready for its daily Paris Air Show flight. Source: Paris Air Show.
Outlook 2024: Milestone year for alternative energy development
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By Scott Hamilton and Bjorn Fehrm
Jan. 18, 2024, © Leeham News: Twenty twenty four is 10 years after the Sustainable Aircraft discussions started when Airbus flew its battery-powered E-Fan before the world’s OEMs and press in July 2014 at the Farnborough Air Show.
The time that has passed is longer than the normal development time for a new aircraft, and what have the hundreds of projects that started in the wake of the E-Fan achieved? We have one new two-seat trainer, the Pipistrel Velis Electro, in production, but not much else.
A typical urban air mobility vehicle concept.
There has been no lack of electric airplane project announcements, one more fanciful than the other. Operational ranges and economics that will enable the replacement of the typical regional turboprops have been presented, but the two functional demonstrators we have in the air that go beyond nine seats are hydrogen fuel cell aircraft, not battery-electric or hybrid electric.
We have hybrid five and nine-seat commuters flying in prototypes, and a couple of hybrids will start production during the year. These will reach the market in 2025 or 2026, but how operationally viable these is still not clear. But beyond nine seats, there are only plans, no projects that plan to fly prototypes this year or next.
The one-battery electric project, Eviation Alice, flew once, then packed up, declaring we needed better batteries. It’s clear the job of exchanging the hydrocarbon combustion engine for aircraft is much harder than thought. The problem is that aircraft are supposed to fly for hours, and the energy density of normal fuel is still 50 times higher than for batteries.