Leeham News and Analysis
There's more to real news than a news release.
Perspective on Boeing’s 737 replacement
By Scott Hamilton Sept. 30, 2025, © Leeham News: The Wall Street Journal billed the story as an exclusive, and it did contain details previously unreported. But the fact that Boeing is working on a 737 replacement isn’t… Read More
Engine makers tout “Plan A” but have “Plan B” backups in R&D
Subscription Required By Scott Hamilton June 23, 2025, © Leeham News, Paris: CFM International touts its Open Fan RISE engine as the wave of the future. (CFM is a 50-50 joint venture between GE Aerospace and Safran.) Rival… Read More
“Hyper focus on reliability and durability out of the gates”
By Scott Hamilton Sept. 11, 2024, © Leeham News: GE Aerospace and Safran advance on the CFM RISE Open Fan engine with an overriding goal: “Our customers really want us to be hyper-focused on reliability and durability out… Read More
Bjorn’s Corner: New engine development. Part 19. Turbines.
August 9, 2024, ©. Leeham News: We do an article series about engine development. The aim is to understand why engine development now has longer timelines than airframe development and carries larger risks of product maturity problems. To… Read More
Customer interest in Open Fan increasing, says GE
By Scott Hamilton July 25, 2024, © Leeham News: GE Aerospace advances testing and market information with its RISE Open Fan engine, which officials say is the best hope for reducing carbon footprints in the next decade. RISE… Read More
Bjorn’s Corner: New engine development. Part 10. Propeller, Rotor or Fan?
June 7, 2024, ©. Leeham News: We do an article series about engine development. The aim is to understand why engine development now has longer timelines than airframe development and carries larger risks of product maturity problems. To… Read More
Bjorn’s Corner: New engine development. Part 10. Airframe integration
May 24, 2024, ©. Leeham News: We do an article series about engine development. The aim is to understand why engine development now has longer timelines than airframe development and carries larger risks of product maturity problems. To… Read More
Bjorn’s Corner: New engine development. Part 8. Open Rotor technology
May 17, 2024, ©. Leeham News: We do an article series about engine development. The aim is to understand why engine development now has longer timelines than airframe development and carries larger risks of product maturity problems. To… Read More
Pontifications: NASA pulls the plug on electric airplanes
Some odds and ends after three weeks on the road. NASA pulls the plug on electric airplane research. NASA and Boeing’s Transonic Truss Brace Wing contract. Engines and the TTBW. July 18, 2023, © Leeham News: When NASA… Read More