Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Boeing’s new fighter award moves away from money-losing fixed price contracts March 24, 2025
- Airbus still struggles to deliver planes on time March 24, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 14. March 21, 2025
- 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
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
Bjorn’s Corner: The challenges of hydrogen. Part 28. Airbus priorities
March 12, 2021, ©. Leeham News: I had the chance to talk about Sustainable Air Transport with Airbus VP Zero Emission Aircraft, Glenn Llewellyn, in the week. The discussion centered around Airbus’ overall direction and the targets with… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 27. Fuel cell APU gains
March 5, 2021, ©. Leeham News: We have discussed different auxiliary power generation principles for a hydrogen aircraft over the last weeks. We found a fuel cell auxiliary power system has many attractions, one being the possibility of… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 26. Auxiliary power
February 26, 2021, ©. Leeham News: Last week we discussed auxiliary power generation for a hydrogen aircraft and found that a fuel cell system had many attractions. However, it’s more challenging to develop than a hydrogen-converted APU, and… Read More
Podcast: 10 Minutes About Sustainable Air Transport
Feb. 16, 2021, © Leeham News: Electrically powered aircraft. Or hybrids. Or bio-fuels. Or hydrogen. These are the alternative suggested by environmentalists and industry to reduce carbon emissions by the airlines. Which makes sense? Which is practical? Today’s… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 24. Propulsion choice
February 12, 2021, ©. Leeham News: After covering the basics of fuel cells last week in our hydrogen airliner series, we now look at what type of system to choose for aircraft propulsion and onboard systems power. We… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 23. Hydrogen fuel cells
February 5, 2021, ©. Leeham News: Last week, we started the discussion around fuel cells as a source of electric energy in airliners. We went through the principle and asked some vital questions. Now we look at different… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 22. Hydrogen fuel cells
January 29, 2021, ©. Leeham News: Over the last weeks, we looked at Center of Gravity (CG) problems with rear fuselage liquid hydrogen tanks as used in Airbus’ ZEROe turbofan airliner concept. We can conclude that the CG… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 21. Hydrogen airliner weight shift
January 22, 2021, ©. Leeham News: In last week’s Corner, we looked at how the hydrogen consumed in the rear fuselage tanks changes the airliner’s Center of Gravity (CG). Now we discuss how this change of Center of… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 20. Hydrogen airliner weight shift
January 15, 2021, ©. Leeham News: In last week’s Corner, we looked at how hydrogen consumed in the rear fuselage tanks of Airbus’ ZEROe concept affect the airliner’s efficiency. Now we look at other aspects of the rear… Read More