Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- Bjorn’s Corner: New engine development. Part 5. Turbofan design problems April 26, 2024
- Airbus 1Q2024 results: Airbus CEO: “A350 in-service experience drives positive reputation and orders” April 25, 2024
- A350-1000 or 777-9? Part 3 April 25, 2024
- Boeing CEO promises company is turning around…again April 24, 2024
- Solid start for stand-alone GE Aerospace despite cuts to LEAP output April 23, 2024
Bjorn’s Corner: The challenges of Hydrogen. Part 3. Application space.
August 7, 2020, ©. Leeham News: In our series on Hydrogen as an energy store for airliners we now look at the emission targets one is chasing and then discuss for what type of airliner does a hydrogen… Read More
Bjorn’s Corner: The challenges of Hydrogen. Part 2. Ecosystem.
July 31, 2020, ©. Leeham News: In our series on Hydrogen as an energy store for airliner use we begin by looking at the needed ecosystem that can produce and distribute Hydrogen. When I was skeptical about hydrogen… Read More
Bjorn’s Corner: The challenges of Hydrogen. Part 1. Background.
July 24, 2020, ©. Leeham News: What a difference three months make! When I wrapped the 20 piece Corner series about e in ePlane not standing for electric, on the first of May, I was virtually alone in… Read More
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 22. Fuel Cell system efficiency and mass
June 3, 2022, ©. Leeham News: Last week, we looked at the powers and thermals of a Fuel Cell system for aircraft propulsion. Our example was a cryogenically cooled system with a superconducting Motor, Inverter, and Cabling. Now… 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 6P. Energy consumption, the deeper discussion.
Subscription required By Bjorn Fehrm February 11, 2022, ©. Leeham News: This is a complementary article to Part 6. Energy consumption. It uses the Aircraft Performance Model from our Consultancy practice to generate energy consumed data when we… Read More
Bjorn’s Corner: The challenges of airliner development. Part 12. The Prelaunch Phase.
July 16, 2021, ©. Leeham News: Last week, we showed the first cut of an overall Program Plan for our 19 seat airliner project. Now we discuss the Prelaunch Phase activities in more detail, including what type of… Read More
Bjorn’s Corner: The Challenges of Airliner Development. Part 1. Introduction
April 30, 2021, ©. Leeham News: After our hydrogen series, we now start a series around the Challenges of Airliner Development. We have more aeronautical projects in development than ever, fueled by the transformation to new, more sustainable… Read More
Bjorn’s Corner: Why e in ePlane shall stand for environment, Part 9. Hydrogen, cont.
February 14, 2020, ©. Leeham News: Last week we started looking at hydrogen as an alternative energy source for our air transport system. We discussed the use of hydrogen as a direct fuel replacement to jet fuel, burning… Read More