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 28. Wrapup. October 11, 2024
- Boeing strike hits suppliers, Airbus steps in October 10, 2024
- Boeing-IAM contract talks fail, no new negotiations scheduled, no end in sight October 9, 2024
- Boeing 3Q deliveries up despite strike October 8, 2024
- Strike slows Boeing’s march toward improving safety culture October 7, 2024
Airbus presents their CityAirbus UAM
By Bjorn Fehrm
September 21, 2021, ©. Leeham News: Airbus helicopter division presented their entry for the UAM market today at the Airbus 2021 Summit in Toulouse.
It was a presentation of a vehicle and ecosystem that has been cooking for years. After two demonstrators that tested different aspects of eVTOL flight and thousand of hours on supercomputers and in wind tunnels, the final CityAirbus is here, Figure 1.
Its configuration is as unique as Airbus’ approach when presenting it.
Figure 1. Airbus UAM entry, the CityAirbus. Source: Airbus.
Bjorn’s Corner: The challenges of airliner development. Part 21. Production Certificate
By Bjorn Fehrm, Henry Tam, and Andrew Telesca.
September 17, 2021, ©. Leeham News: Last week, we looked at the Production facilities and tooling. In order to bring in revenue, we need to deliver aircraft.
But to have the right to deliver aircraft we need a Production Certificate in addition to our Type Certificate for the design. We need to start the work to get a Production Certificate well before we flight test the aircraft and complete the type certification work, Figure 1.
Figure 1. The program plan for our project. Source: Leeham Co.
Bjorn’s Corner: The challenges of airliner development. Part 19. Test rigs for ground and air use
By Bjorn Fehrm, Henry Tam, and Andrew Telesca
September 3, 2021, ©. Leeham News: Last week, we looked at the Certification Compliance Planning we do concurrently with Detailed Design, Figure 1.
It’s now time for us to work on our Test rigs and systems for ground and flight testing. We need to get these defined before we freeze the aircraft’s configuration and start making our flight test aircraft.
Figure 1. The program plan for our project. Source: Leeham Co.
Sustainable Aero Lab disqualifies “Greenwash” investments
By Bjorn Fehrm
August 25, 2021, ©. Leeham News: Times change and the use of words with it. Today, the hundreds of UAM Air Taxi projects talk about how “environmentally friendly” this mode of transportation is, and Boom’s Overture is “the most Sustainable supersonic airliner.” The aerospace media recently focused on how we now have “Space Travel for everyone (in possession of the necessary pocket change).”
The head of Sustainable Aero Lab, Stephan Uhrenbacher, disqualifies these investments in a study on where to invest in fixing air transport’s pressing problems: “The startups receiving the most attention in aerospace recently have been doing space travel and urban air taxis. While these products make for exiting flying objects and satisfy human desire, neither air taxis nor putting more people in space address the problem facing commercial aviation: Flying needs to become carbon-free. And this needs to happen much faster than most people in the industry believe. It opens room for startups to provide components for future aircraft or even entire planes, but also new modes of operation.”
Figure 1. The promising Sustainable Aviation startups. Source: Sustainable Aero Lab.
Bjorn’s Corner: The challenges of airliner development. Part 16. Post Launch.
By Bjorn Fehrm, Henry Tam, and Andrew Telesca.
August 13, 2021, ©. Leeham News: Last week, we went through the Certification Application, one of the most important milestones in the Pre-Launch phase.
Now we assume we got a Product Launch approval from our board/Investors. We start looking at the work packages that meet us in the Post Launch phase.
Figure 1. The Program Plan for our Green 19 seater. Source: Leeham Co. Click to see in full scale.
Bjorn’s Corner: The challenges of airliner development. Part 11. The Program Plan.
By Bjorn Fehrm, Henry Tam, and Andrew Telesca.
July 9, 2021, ©. Leeham News: Now that we have done the basic market research we should scope the program. To do this we need to understand what aircraft we will develop and to what certification rules.
Our market research tells us to develop a 19 seat aircraft that can operate as a passenger and/or cargo aircraft outside the US and as cargo aircraft in the US. This enables us to certify it to FAA Part 23 and the equivalent rules of other National Aviation Authorities where we want to sell the aircraft.
Figure 1. The new Cessna SkyCourier Cargo/19 seat utility airliner. Source: Cessna.
Bjorn’s Corner: The challenges of airliner development. Part 4. How safe is safe?
By Bjorn Fehrm, Henry Tam, and Andrew Telesca
May 21, 2021, ©. Leeham News: After giving an overview of the types of certification rules last week we now describe why the rules can vary so much between projects.
We cover some general concepts around acceptable levels of safety that influence how the regulations get applied to specific projects.
Figure 1. Air vehicles and their classification. Source: Aviation & Flying.
Update (2): Boeing rehires aircraft inspectors
By Bryan Corliss
May 18, 2021 © Leeham News — The Boeing Co. has quietly recalled at least some of as many as 900 quality control inspectors who were laid off in 2019 as part of a drive to adopt car-industry manufacturing processes in aerospace manufacturing.
The move comes after the union for the inspectors – Machinists District Lodge 751 – pushed the company to prove that getting rid of inspectors could be done without risking quality issues and would actually improve production times.
“Our union’s goal is to save Boeing from making decisions that could be detrimental to (its) future and ours,” union leaders said in its monthly AeroMechanic newsletter. “A second set of eyes is a critical component of building Boeing airplanes and necessary for the long-term success of the company.”
A union spokeswoman said she was unable to say precisely how many of the inspectors were initially laid off, and how many have been brought back since the recalls started. Boeing’s media relations team did not respond to a written list of questions on the topic.
Updated: Boeing provided a written statement that said, in part, that there has been “no reduction in quality staffing related to changes in our inspection approach,” despite reports in 2019 that a new approach to quality control would lead to far fewer human inspections, and inspectors.
Update 2, May 24: Boeing provided additional information today about the reported layoffs of verification inspectors, first reported by The Seattle Times in 2019.
Boeing acknowledged that a former Boeing executive told The Times then that up to 900 inspectors could be laid off that year. It was this 2019 report that formed the basis of LNA’s introductory paragraph.
However, in response to a specific question by LNA, today Boeing said there were no cuts in quality inspectors in 2019.
There were layoffs in 2020, following the eruption of the COVID-19 global pandemic, which occurred during the extended grounding of the 737 MAX. Boeing declined to specify the number.
“We don’t provide details about employment in specific teams,” a spokesman wrote in an email to LNA. “As we’ve said throughout the past year, due to the pandemic’s impact on commercial aviation, we reduced production rates for some of our commercial programs, and our factory employment is directly related to production work statement.”
Bjorn’s Corner: The challenges of airliner development. Part 3. Certification rules overview.
By Bjorn Fehrm, Henry Tam, and Andrew Telesca.
May 14, 2021, ©. Leeham News: The certification rules for different aeronautical vehicles are specific for each airworthiness jurisdiction. It means each country has its own rules for all the categories we listed in the last article. However, with the support of the International Civil Aviation Organization (ICAO), there is harmonization in many areas, especially around airport and airline operations. For airworthiness rules, most originated from dominant jurisdictions like the US FAA, whose rules have inspired the Canadian and European rules as well as many others.
As new technologies come to market, or new safety information is learned through testing, accidents, and incidents, the major regulatory agencies of the world constantly adapt with some rules harmonizing across jurisdictions and other rules diverging in different directions. It is an ever-evolving regulatory landscape that supports some of the safest transportation in the world, but it comes at a cost for companies as what was done in the past cannot always be expected to be accepted in the future, and the more global your desired market the more rules you need to understand and the more constraints your design will need to satisfy.
Figure 1. The EASA certification rules website. Source: EASA.