Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Boeing unlikely to meet FAA’s 90-day deadline for new safety program April 18, 2024
- Focus on quality not slowing innovation, says GKN April 18, 2024
- Boeing defends 787, 777 against whistleblower charges April 17, 2024
- Dissecting Boeing CEO’s statement next new airplane will cost $50bn April 15, 2024
- Bjorn’s Corner: New engine development. Part 3. Propulsive efficiency April 12, 2024
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
Bjorn’s Corner: The challenges of hydrogen. Part 19. Hydrogen airliner weight shift
January 8, 2021, ©. Leeham News: In our Corner before Christmas we discussed the hydrogen tank placement at the rear of the aircraft for Airbus’ ZEROe concept turbofan aircraft. We now calculate how the weight transfer when emptying… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 18. Airliner hydrogen tank
December 18, 2020, ©. Leeham News: After discussing the risk-reducing research programs we need to do before a program launch in 2027, we focus the next Corners on the hydrogen airliner’s biggest problem, the liquid hydrogen tank. In… Read More
Bjorn’s Corner: The challenges of hydrogen. Part 17. Hydrogen airliner program
December 11, 2020, ©. Leeham News: We use this Corner to define the time table for our hydrogen airliner program and for what areas we need to conduct risk-reducing research before we embark on an actual design. As… Read More
Bjorn’s Corner: The challenges of Hydrogen. Part 16. A Hydrogen airliner
December 4, 2020, ©. Leeham News: To dig a level deeper into the challenges of hydrogen airliners, as a next step we design such a plane (on a high level), now that we have covered the basics. It… Read More
Bjorn’s Corner: The challenges of Hydrogen. Part 15. Hydrogen cost
November 13, 2020, ©. Leeham News: In our series on hydrogen as an energy store for airliners, we now look at the cost of hydrogen. The current cost-efficient production is predominantly by reforming natural gas, meaning it’s a… Read More
Bjorn’s Corner: The challenges of Hydrogen. Part 14. Supply of Hydrogen
November 6, 2020, ©. Leeham News: In our series on Hydrogen as an energy store for airliners we now look at how to create a supply industry for hydrogen. The problem of a sizable and competitive hydrogen supply… Read More