What Bjorn Fehrm thinks about optimism

@bjorn-fehrm · 8 positions · On ppll ↗

Aeronautical engineer, former fighter pilot and airline executive, now an analyst at Leeham Company writing the weekly Bjorn's Corner on aircraft economics and design. He works from an aircraft performance model and has spent years checking the arithmetic of electric, hybrid and hydrogen aviation projects against it.

Bjorn Fehrm did not write this page.

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1 dated position, 2021, in their own words. Our reading of what Bjorn Fehrm has said — not written or endorsed by them.

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1. 2 Apr 2021

   Our readingBattery-electric airliners do not work even on optimistic assumptions, and the arithmetic said so before anyone built one.

   batteries

   Their wordsHaving done the sums before hitting the keys, I was a skeptic. It just didn’t work, even with optimistic assumptions around the parameters for the aircraft and its batteries.

   ↗Bjorn’s Corner: The challenges of hydrogen. Part 31. Wrap-up: Where we standleehamnews.com 1st of 3 in this piece