Bjorn’s Corner: Geared turbofans

January 13, 2017, ©. Leeham Co: The time has come to go through the reasons why some turbofan engines are designed with a gearbox between the fan and the low pressure shaft. The principle design is shown in… Read More

Bjorn’s Corner: Turbofan developments in 2017

January 06, 2017, ©. Leeham Co: Before we finish of our series on airliner turbofan technology, let’s spend this Corner on what will happen on the airliner engine front during 2017. While there is no totally new engine that… Read More

2017: the year ahead

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The Boom SST engine problem, Part 2

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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

Clouds overhang Bombardier ahead of earnings call

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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

Airbus results depressed from continuing delivery delays

Oct. 26, 2016: Airbus Group reported that its nine months financial results continue to be depressed by delivery delays in the A320neo and A350-900 programs. The Group reported revenues of €43bn for the period and charges that lowered profits…. Read More

Engine industry clamoring for road back

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Airline assets and lessor assets: Bombardier and Embraer

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