Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- China bans Boeing, US parts imports in tariff war April 15, 2025
- Boeing welcomes COMAC competition as Asia-Pacific demand soars April 15, 2025
- How good is the C929? April 14, 2025
- Bjorn’s Corner: Air Transport’s route to 2050. Part 17. April 11, 2025
- Uncertainty plagues airline, aerospace, lessor industries over tariffs April 10, 2025
Bjorn’s Corner: Sustainable Air Transport. Part 41. VTOL mission calculations.
October 14, 2022, ©. Leeham News: Last week, we defined the phases of an eVTOL mission that shall show us the typical range and endurance of the eVTOLs of a hybrid vectored thrust/lift and cruise eVTOL, similar to… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 38. Piloting the VTOL
September 23, 2022, ©. Leeham News: Last week, we looked into the hardware needed for the Flight Control System (FCS) of the eVTOLs in development. We could see the redundancy of the FCS had to be extensive as… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 36. Battery Management.
September 9, 2022, ©. Leeham News: Over the last weeks, we have discussed the cells that make up the battery system for an eVTOL. The battery system has 10,000 cells or more. All these must, on an individual… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 35. Lilium battery cells.
September 2, 2022, ©. Leeham News: This is a summary of the article Part 35P, Lilium battery cells. It discusses the requirement the Lilium jet principle puts on its battery cells and how this is solved, both with… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 35P. Lilium battery cells. The deeper discussion.
Subscription required September 2, 2022, ©. Leeham News: This is a complementary article to Part 35, Lilium battery cells. It discusses the requirement the Lilium jet principle puts on its battery cells and how this is solved, both… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 34P. eVTOL battery cells. The deeper discussion.
Subscription required August 26, 2022, ©. Leeham News: This is a complementary article to Part 34, eVTOL battery cells. It discusses the trickiest system on an eVTOL, the battery system, and its key component, the battery cells. The… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 34. eVTOL battery cells
August 26, 2022, ©. Leeham News: This is a summary of the article Part 34P, eVTOL battery cells. It discusses the main component of the battery system, the battery cell. The Lithium-Ion cells in an eVTOL battery system… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 33P. eVTOL batteries. The deeper discussion.
Subscription required August 19, 2022, ©. Leeham News: This is a complementary article to Part 33, eVTOL batteries. It discusses the trickiest system on an eVTOL, the battery system. While Lithium Ion batteries have come a long way… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 33. eVTOL batteries.
August 19, 2022, ©. Leeham News: This is a summary of article Part 33P, eVTOL batteries. This article discusses the trickiest system on an eVTOL, the battery system. The battery system supplies the energy to the VTOL, and… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 31. Mixed architectures.
August 5, 2022, ©. Leeham News: This week, we look at two eVTOLs that don’t fit the terminology we use; Multicopters, Vectored thrust, or Lift and Cruise. The Vertical VX4 and Archer Maker are Lift and Cruise designs,… Read More