Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- How good is the COMAC C919? March 20, 2025
- Boeing CFO Brian West: OK on tariffs for now, backlogs and inventories help March 20, 2025
- Pontifications: Southwest’s core problems are not solved by business model changes-yet March 19, 2025
- Boeing 2024 Proxy Statement: Executive Compensation includes retirement gifts for Calhoun, Deal; housing support for Ortberg, Pope, and other stuff March 17, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 13. March 14, 2025
Alaska Airlines announces hydrogen-electric partnership with ZeroAvia
By Bryan Corliss May 2, 2023 © Leeham News – Two-and-a-half years ago, a hydrogen-powered regional aircraft for Alaska Airlines was a caffeine-fueled brainstorm, the airline’s head of development said. Two-and-a-half years from today, the flight of this… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 22P. Fuel Cell system efficiency and mass. The deeper discussion.
Subscription required June 3, 2022, ©. Leeham News: This is a complementary article to Part 22, Fuel Cell system efficiency and mass. It analyses the power, loss, mass, and efficiency consequences of the different fuel cell architectures described… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 21. Fuel Cell system design
May 27, 2022, ©. Leeham News: Last week, we looked at the power levels we need in a fuel cell and electric motor system. We listed the required powers and durations for takeoff, climb, and maximum continuous power… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 18. Advanced Hydrogen Gas Turbines
May 6, 2022, ©. Leeham News: Last week, we looked at how we create the shaft power for the thrust device we discussed before. We described the basics of a hydrogen-burning gas turbine alternative. When we have liquid… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 12. Hydrogen storage.
March 25, 2022, ©. Leeham News: Last week, we looked at the energy density by mass and volume for hydrogen and regular Jet fuel (Kerosene), Figure 1. With this information, we now look at how these fuels can… Read More
Pontifications: Does Embraer’s turboprop design foretell what Boeing needs?
Aug. 23, 2021, © Leeham News: Could Embraer’s new turboprop design have formed the basis for the 100-150 seat Boeing single-aisle aircraft had the joint venture proceeded? A former Boeing engineer thinks it might have. The aft-mounted, open… Read More