What Bjorn Fehrm thinks about design

@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.

We collected these quotes from things they published elsewhere, and every quote links to where it was said. They have no account here and have not endorsed this site. Quotes are word for word; the short line under each one is our own restatement, not their wording. Their own site. Is this you? Claim it or ask us to remove it. Or tell us what is wrong here.

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Only Bjorn Fehrm on design. See everyone on design

1 dated position, 2022, in their own words. Our reading of what Bjorn Fehrm has said — not written or endorsed by them.

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1. 28 Jan 2022

   Our readingAn airliner's empty weight is at least half its take-off weight, and no flying design has ever come in below 47%.

   Their wordsThe model output, which uses data from 74 presently flying airliner variants, from short-haul Commuters to long haul Widebodies, made with aluminum or composites, shows that the OEW fraction (OEW divided by MTOW) never go below 47%.

   ↗Bjorn’s Corner: Sustainable Air Transport. Part 4. Reality checks.leehamnews.com 2nd of 3 in this piece