Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Safran hails ‘landmark’ 2024 with record results February 14, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 9. February 14, 2025
- Politics and the FAA February 13, 2025
- Spirit Aero teeters on bankruptcy, but what’s new about that? February 10, 2025
- Trump vows to add tariffs to aluminum and steel; Airbus, Boeing, suppliers will be impacted February 10, 2025
Bjorn’s Corner: Sustainable Air Transport. Part 14. Propulsion system requirements.
April 8, 2022, ©. Leeham News: Last week, we discussed the architecture of a liquid hydrogen fuel system. We now start looking at the propulsion system of a hydrogen aircraft. Before discussing how a propulsion system is done,… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 13. Hydrogen fuel system and APU.
April 1, 2022, ©. Leeham News: Last week, we looked at how to store hydrogen in an aircraft. We could see the gaseous storage of hydrogen is too heavy other than for demo systems and extreme short-haul. For… 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
Bjorn’s Corner: Sustainable Air Transport. Part 6. Energy consumption.
February 11, 2022, ©. Leeham News: In a sister article, Part 6P. Energy consumption, the deeper discussion we use Leeham’s Aircraft Performance Model from our consulting practice to generate the aeronautical energy consumption for aircraft like Eviation’s Alice… Read More
Forecast 2022: Sustainability
Subscription Required By Bjorn Fehrm Introduction February 7, 2022, © Leeham News: The year that passed was when Sustainability broke through the walls of “I’m not convinced we have a problem” and “If so, what shall we do… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 33. Wrap-up: The Eco-system
April 16, 2021, ©. Leeham News: Last week, we wrapped up the operational part of sustainable air transport using hydrogen as an energy source. Now we look at where we are with the all-important Eco-system. It has many… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 32. Wrap-up: Going forward
April 9, 2021, ©. Leeham News: Last week we made a summary of the history of initiatives for sustainable aviation, now we look at the likely developments over the next 10 years. What is the likely development for… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 31. Wrap-up: Where we stand
April 2, 2021, ©. Leeham News: It’s time to wrap up our series on the hydrogen airliner alternative for Sustainable Commercial Aviation. We review the status for sustainable aviation as of today, then look at the future next… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 30. Integrated nacelles.
March 26, 2021, ©. Leeham News: This week, we look at combining the propulsion and hydrogen tank in an integrated nacelle as Airbus proposes in Figure 1. Airbus calls it its “pod” solution. What are the advantages, and… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 29. Gas turbine heat management.
March 19, 2021, ©. Leeham News: This week we look deeper into the gains we can have for a hydrogen gas turbine-propelled airliner. The ideas stem from the work of Chalmers Professor T. Grönstedt’s team in different EU… Read More
