Leeham News and Analysis
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Bjorn’s Corner: New aircraft technologies. Part 36. Prototype manufacturing and Testing
October 27, 2023, ©. Leeham News: We are discussing the different design phases of an airliner development program. After covering Conceptual, Preliminary, and Detailed design (Figure 1), we now discuss prototype manufacturing and testing, where we today go… Read More
Bjorn’s Corner: New aircraft technologies. Part 35. Prototype manufacturing and Testing
October 20, 2023, ©. Leeham News: We are discussing the different design phases of an airliner development program. The typical phases and their time use and manning are described in the Gant chart in Figure 1. After covering… Read More
The reality behind the eVTOL industry’s hyperbole, Part 6.
Subscription required By Bjorn Fehrm August 17, 2023, © Leeham News: We look at the promises that the VTOL industry has made in their Investor prospects and what the reality is as they come closer to Certification and… Read More
The reality behind the eVTOL industry’s hyperbole, Part 4.
Subscription required By Bjorn Fehrm August 3, 2023, © Leeham News: We look at the promises that the VTOL industry has made in their Investor prospects and the reality as they come closer to Certification and Production. After… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 50. eVTOL production volumes.
December 16, 2022, ©. Leeham News: Last week, we looked at the production costs of our typical eVTOL. We could see that it was far higher than Joby’s assumption of $1.3m for the S4, about three times higher… 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
Bjorn’s Corner: The challenges of airliner development. Part 32. Aircraft delivery and EIS
December 3, 2021, ©. Leeham News: Last week, we went through typical problems by the start of serial production, such as weight creep and traveled work. Now we discuss the ins and outs of delivering the aircraft to… Read More
Bjorn’s Corner: The challenges of airliner development. Part 31. Serial Production problems
November 26, 2021, ©. Leeham News: Last week, we started our analysis of the serial production phase. If development is filled with revelations and problems to solve, production has it as well. We start this week by looking… Read More
Bjorn’s Corner: The challenges of airliner development. Part 29. Finishing Flight tests
November 12, 2021, ©. Leeham News: Last week, we looked at our role in creating comprehensive crew training so the aircraft can be safely operated during its lifetime. With maintenance and crew training docs and curriculums well underway… Read More