Bjorn’s Corner: Aircraft engines in operation, Part 6

February 24, 2017, ©. Leeham Co: After having analyzed how the engine gets stressed during different phases of flight, we now look into how engines are used. The de-rating of engines for takeoff is important, as not 100% thrust… Read More

Ryanair: cheapest and most profitable airline in Europe

By Bjorn Fehrm February 22, 2017, ©. Leeham Co: Ryanair is Europe’s airline with the lowest fares. And it’s the most profitable, despite growing faster than even the Middle East carriers (growth needs money). It’s time to dive deep… Read More

Bjorn’s Corner: Aircraft engines in operation, Part 5

February 17, 2017, ©. Leeham Co: In our journey of an airline engine’s life, we will now look at the maintenance which is necessary to keep it fit for flight. An engine is only in top condition once in… Read More

Pontifications: Alaska’s A321neo test drive

Feb. 13, 2017, © Leeham Co.: It was subtle, but it was there: Alaska Airlines will take the Airbus A321neo for a test drive. This will happen via its new sibling, Virgin America, which has 10 A321neos on… Read More

Bjorn’s Corner: Aircraft engines in operation, Part 4

February 10, 2017, ©. Leeham Co: We now continue our journey how an airline engine is operated during a typical mission. Last week we explained basics for engine control and Take-Off flat-rating. We now continue with Climb, Cruise and… Read More

Trans-Atlantic for $75, does it work?

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Bjorn’s Corner: Aircraft engines in operation, Part 3

February 3, 2017, ©. Leeham Co: In the last Corner, we went through how our airliner engine reacts to the different phases of flight, including what happens when we operate in a hot environment. We also showed how engine… Read More

Bjorn’s Corner: Aircraft engines in operation, Part 2

January 27, 2017, ©. Leeham Co: In the last Corner, we began looking at the in-service operation of a Turbofan. We covered how thrust and fuel consumption varies in the different phases of an airliner’s mission. Now we will… Read More

Bjorn’s Corner: Aircraft engines in operation

January 20, 2017, ©. Leeham Co: We have now covered the technology around airliner turbofans. Now it’s time for the real stuff: their operational life. Most decisions that an engine designer does is about how the engine shall function in practice. To understand… 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