Bjorn’s Corner: New engine development. Part 24. New versus old, GTF versus V2500

September 13, 2024, ©. Leeham News: We do an article series about engine development and why it has longer timelines than airframe development. It also carries larger risks of product maturity problems when it enters service than the… Read More

Bjorn’s Corner: New aircraft technologies. Part 9. Engine core advances

April 21, 2023, ©. Leeham News: This is a summary of the article New aircraft technologies. Part 9P. Engine core advances. The article discusses how developments for the next-generation airliner engine cores will increase the thermal efficiency of… Read More

The Airbus A220-500, a deep-dive analysis, Part 2

Subscription required By Bjorn Fehrm Jan. 23, 2023, © Leeham News: Following Thursday’s article about an up-and-coming Airbus A220-500, we now look at the operational cost for the A220-500 and compare it with the A320neo it should replace…. Read More

Engine Development, Part 1: Launch to Entry into Service

Subscription Required By Vincent Valery Introduction   Pratt & Whitney Geared Turbofan Aug 18, 2022, © Leeham News: LNA analyzed the evolution of commercial aircraft development timelines last month. The time between a program launch and entry into service… Read More

Airbus group 2Q results: Engine deliveries decides 2017 results.

By Bjorn Fehrm July 27, 2017, ©. Leeham Co: Airbus Group presented its 2Q2017 results this morning. The result for the first half and the full year of 2017 is decided by A320neo engine deliveries. Out of a planned… Read More

Bjorn’s corner; Turbofan engine challenges; Part 2

November 04, 2016, ©. Leeham Co: We will now start to go through a modern turbofan airliner engine and look at the technologies which are used and what are their technical challenges. We will start today with the engine… Read More

IRKUT MC-21 analysis, Part 4. Performance with PD-14

By Bjorn Fehrm Subscription required. Introduction March. 14, 2016, ©. Leeham Co: In three articles we have been looking at the new Russian single aisle aircraft, Irkut MC-21, from United Aircraft and the new Russian engine that is being… Read More

Bjorn’s Corner: Engine architectures

4 March 2016, ©. Leeham Co: There is a saying, “There’s more than one way to skin a cat.” The same goes for making successful Turbofans to commercial aircraft. At the recent Pacific Northwest Aerospace Alliance 2016 sub-supplier… Read More

IRKUT MC-21 analysis, Part 3. The Russian engine alternative

By Bjorn Fehrm Subscription required. Introduction Feb. 29, 2016, ©. Leeham Co: In two articles we have been looking at the new Russian single-aisle aircraft, Irkut MC-21from United Aircraft. Now it’s time to analyze the new Russian engine,… Read More