The production cost trap for eVTOL upstarts

Subscription required By Bjorn Fehrm April 13, 2023, © Leeham News: Last week, we gave the example of a new propulsion principle 30-seat airliner as a project that would face the liquidity strain of initial production costs. We… Read More

Bjorn’s Corner: New aircraft technologies. Part 7. Propulsion

April 7, 2023, ©. Leeham News: This is a summary of the article New aircraft technologies. Part 7P. Propulsion. The article discusses how developments in the next-generation airliner propulsion system will be the second most important area for… Read More

Bjorn’s Corner: New aircraft technologies. Part 7P. Propulsion

Subscription required By Bjorn Fehrm April 7, 2023, ©. Leeham News: This is a complementary article to Part 7. Propulsion. It discusses in detail the next-generation propulsion systems and what to expect from their possible increase in performance… Read More

The production cost trap for upstarts

Subscription Required By Bjorn Fehrm April 6, 2023, © Leeham News: The last five years have been among the busiest in aeronautical history, with announcements of new aircraft and VTOLs based on greener propulsion technologies. The public focus… Read More

Bjorn’s Corner: New aircraft technologies. Part 5P. Optimal fuselage

Subscription required By Bjorn Fehrm  March 24, 2023, ©. Leeham News: This is a complementary article to Part 5. Optimal fuselage. It discusses in detail the optimal fuselage for an airliner with 250 seats using different architectures and… Read More

Bjorn’s Corner: New aircraft technologies. Part 4P. Fuselage trades

Subscription required  March 17, 2023, ©. Leeham News: This is a complementary article to New aircraft technologies. Part 4. Fuselage trades. It discussed in detail the trades involved in designing a fuselage of an airliner with 250 seats… Read More

Bjorn’s Corner: Aircraft technology developments. Part 1.

February 24, 2023, ©. Leeham News: In the Sustainable Air Transport series we finished last week, we described new aircraft technologies developed to reduce Green House Gas (GHG) emissions. There was one area we didn’t discuss, the progress… Read More

Bjorn’s Corner: Sustainable Air Transport. Part 5. Fundamentals recap.

February 4, 2021, ©. Leeham News: We did a simple reality check on two high-profile ideas for Sustainable Air Transport last week, the Eviation Alice project and Heart Aerospace’s ES-19. We now look at energy usage when performing… Read More

Bjorn’s Corner: The challenges of airliner development. Part 34. Wrap-up.

December 17, 2021, ©. Leeham News: As we wrap up the series where we look at the monumental work you have to do to get a new aircraft type certified, we will discuss how we need several aircraft… Read More

Bjorn’s Corner: The challenges of airliner development. Part 33. Multi-country Certification

December 10, 2021, ©. Leeham News: Our aircraft has now achieved its first deliveries and is Entering Into Service (EIS) with our launch customer.  This covers one customer and one jurisdiction. As each country is sovereign in Airworthiness… Read More