Leeham News and Analysis
There's more to real news than a news release.
Leeham News and Analysis
- SPEEA, Boeing at impasse over safety program, union says April 23, 2024
- Better transparency needed on Boeing’s 1Q earnings call April 22, 2024
- Bjorn’s Corner: New engine development. Part 4. Propulsive efficiency April 19, 2024
- Boeing unlikely to meet FAA’s 90-day deadline for new safety program April 18, 2024
- Focus on quality not slowing innovation, says GKN April 18, 2024
Bjorn’s Corner: Sustainable Air Transport. Part 19. Fuel Cell propulsion systems
May 13, 2022, ©. Leeham News: Last week, we looked at advanced developments for hydrogen-burning gas turbines. Now we look at the alternative hydrogen-based propulsion system, which uses a Fuel Cell to convert the energy in hydrogen to… Read More
Pontifications: Next new mainline jet likely will be conventionally powered
May 9, 2022, © Leeham News: Pratt & Whitney thinks a hybrid-electric propulsion system might be ready for installation on the next new airplane from Boeing or Airbus by 2031. But more likely is that the new airplane,… Read More
Lessor 2021 Earnings
Subscription Required By Vincent Valery Introduction Credit: AerCap May 3, 2022, © Leeham News: Most passenger airlines incurred severe losses in 2020. However, last year, LNA showed that most lessors had a far less challenging 2020 than their… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 17. Gas Turbine Propulsion
April 29, 2022, ©. Leeham News: Last week, we looked at the thrust generating device that aircraft propulsion systems use. We could conclude that independent of how we create the shaft power, we can choose different thrust technologies… Read More
Bjorn’s Corner: Sustainable Air Transport. Part 16. Thrust generation
April 22, 2022, ©. Leeham News: Last week, we examined propulsion system alternatives and their principal advantages and disadvantages. Now we go deeper into these alternatives. All propulsion systems for aircraft use a propulsion device like a propeller… Read More
Pontifications: Catching up—DHC extends Dash 8 life; 737-10, 777X, A321XLR certifications
Every once in a while, it’s necessary to catch up on this and that…. April 11, 2022, © Leeham News: The announcement drew little notice because the topic wasn’t sexy. De Havilland Canada last week said that Norway’s… Read More
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
War in Ukraine: a local’s perspective
By Judson Rollins April 6, 2022, © Leeham News: This week, LNA reports on a story outside our usual beat: an account of Russia’s invasion of Ukraine through the eyes of a local who watched tanks and explosions… Read More
Assessing passenger airline fuel efficiency
Subscription Required By Vincent Valery Introduction April 4, 2022, © Leeham News: Fuel prices abruptly increased just as travel restrictions started easing after the Covid-19 Omicron wave. The oil price increase accelerated after the Russian invasion of Ukraine…. Read More
Bjorn’s Corner: Sustainable Air Transport. Part 13. Hydrogen fuel system and APU.
April 1, 2022, ©. Leeham News: Last week, we looked at how to store hydrogen in an aircraft. We could see the gaseous storage of hydrogen is too heavy other than for demo systems and extreme short-haul. For… Read More