Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- “Hyper focus on reliability and durability out of the gates” September 11, 2024
- A320neo replacements needs to be ~25% more efficient September 11, 2024
- Boeing IAM vote in 2 days; approval a hard sell September 10, 2024
- Union scourge Frank Lorenzo at last tells his story in “Flying for Peanuts” September 10, 2024
- Slow production ramp up, international sanctions slow C919 progress September 9, 2024
Bjorn’s Corner: Sustainable Air Transport. Part 25. High Temperature Fuel Cell-based 70-seat airliner
June 24, 2022, ©. Leeham News: Last week, we discussed how a High Temperature Fuel Cell (HTFC) could improve the installation of a propulsion system in our 70-seat airliner. We now add this variant to the systems we… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 25P. High Temperature Fuel Cell-based 70-seat airliner. The deeper discussion.
Subscription required June 24, 2022, ©. Leeham News: This is a complementary article to Part 25, High Temperature Fuel Cell-based 70-seat airliner. It adds the masses and efficiencies of a High Temperature Fuel Cell system to our 70-seat… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 24. High Temperature Fuel Cells
June 17, 2022, ©. Leeham News: Last week, we looked at the installation effects and efficiencies of the fuel cell systems we discussed in earlier parts of the series. We could see the variants were significantly heavier than… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 23. Fuel Cell-based 70 seat airliner
June 10, 2022, ©. Leeham News: Last week, we looked at the different fuel cell systems that can go into a 70-seat airliner like the ATR 72. In this week’s Corners, we implement these in the aircraft and… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 23P. Fuel Cell-based 70-seat airliner. The deeper discussion.
Subscription required June 10, 2022, ©. Leeham News: This is a complementary article to Part 23, Fuel Cell-based 70-seat airliner. It analyses the masses and efficiencies of a 70-seat airliner equipped with the fuel cell-based propulsion systems we… 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 20. Dimensioning the Fuel Cell system
May 20, 2022, ©. Leeham News: Last week, we looked at the principal parts of a Fuel Cell-based propulsion system. We need a fuel cell that converts hydrogen to electric power and then an inverter and electric motor… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 19. Fuel Cell propulsion systems
May 13, 2022, ©. Leeham News: Last week, we looked at advanced developments for hydrogen-burning gas turbines. Now we look at the alternative hydrogen-based propulsion system, which uses a Fuel Cell to convert the energy in hydrogen to… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 15. Hydrogen propulsion system choices.
April 15, 2022, ©. Leeham News: Last week, we examined different airliner types’ power requirements and the importance of their size classes in the market. Now we look at what propulsion system alternatives are available when using hydrogen… Read More