Bjorn’s Corner; Turbofan engine challenges; Part 6

December 08, 2016, ©. Leeham Co: We have now come to the turbine in our trip through a modern turbofan.  The turbines make up the rear of the engine, before the propelling nozzle. The turbines are the workhorses in… Read More

Bjorn’s Corner: Turbofan engine challenges, Part 5

By Bjorn Fehrm December 02, 2016, ©. Leeham Co: We will now look at the combustor area in our series on modern turbofan engines. There is a lot of activity in this area, as it sets the level of… Read More

The Boom SST engine problem, Part 2

By Bjorn Fehrm Subscription required Introduction December 01, 2016, ©. Leeham Co: Boom Technology and Virgin Atlantic plan to offer supersonic business class passenger traffic over the Atlantic. We covered the number of challenges that this poses in recent… Read More

Bjorn’s Corner: Turbofan engine challenges, Part 4

  November 18, 2016, ©. Leeham Co: In our series on modern turbofan airliner engines, we will now go deeper into the compressor part. Last week, we covered the fundamentals of compressors. As compressors and turbines use the same… 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

Engine industry clamoring for road back

By Bjorn Fehrm Subscription required. Introduction October 13, 2016, ©. Leeham Co: The airline engine industry is like a ticking bomb. Over the years, a business practice of selling the engines under manufacturing cost and planning to recover… Read More

Airline assets and lessor assets

Subscription required Introduction Part 1: The Big Two OEMs Oct. 3, 2016, © Leeham Co.: There are airline assets and there are leasing assets. That’s a good airplane but it’s not a good leasing asset. These are the… Read More

44% supplier shortfall for GTF now showing impact

Sept. 6, 2016, © Leeham Co.: It was a stunning admission, one that produced the biggest headlines at the United Technologies media days in June: 44% of the suppliers on Pratt & Whitney’s Geared Turbo Fan engine weren’t… Read More

Pontifications: “Troubled” 787 is a thing of the past

LNC has been beset by technical issues since Aug. 17 that interferes with e-mail notification as well as links to Twitter, Facebook and Linkedin. We’re working on it with WordPress. Aug. 29, 2016, © Leeham Co.: Faulty engines… Read More

Irkut MC-21; we look at the MC-21-300, Part 2.

By Bjorn Fehrm Subscription required. Introduction August 01, 2016, ©. Leeham Co: After having found the nearest competitor to the Irkut MC-21-300 as the Boeing 737 MAX 9 in our first article, we now go deeper in the comparison… Read More