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 11. Hydrogen and SAF.

March 18, 2022, ©. Leeham News: In our series, we have now seen the major limitations batteries as an energy source impose on an airliner and that hybrids work but don’t bring any advantages for an airliner. The… Read More

Bjorn’s Corner: Sustainable Air Transport. Part 10. Where Hybrids work.

March 11, 2022, ©. Leeham News: After our articles about Serial Hybrids and Parallel Hybrids showed they were unsuitable for airliners, where do these make sense? The obvious answer is for our stop-and-go cars (as we then can… Read More

Carbon footprint: Regional jet versus turboprop, how large is the difference?

Subscription Required By Bjorn Fehrm Introduction January 27, 2022, © Leeham News: Last week, we kicked off a series of articles where we will measure what difference our choice of flying makes to the primary Greenhouse gas emission,… Read More

Bjorn’s Corner: Sustainable Air Transport. Part 3. Low hanging fruit.

January 21, 2021, ©. Leeham News: Whatever is done in terms of new Sustainable technology for the aircraft, will have a limited influence on the amount of Greenhouse gases that Air Transport emits before 2050. We will only get… Read More

Bjorn’s Corner: Sustainable Air Transport. Part 2. The problem to solve?

January 14, 2021, ©. Leeham News: Before we dig into the different alternatives we have for more Sustainable Air Transport, let’s look at the problem and its sources. Figure 1 shows the emissions of CO2 per person since… Read More

De-carbonisation of air transport is ON

By Bjorn Fehrm July 20, 2021, © Leeham News: Last week was a game-changing week for air transport. Three events synchronized to trigger it. EU presented 13 policies to achieve net-zero greenhouse gas emissions by 2050 with concrete… Read More