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

ExIm Bank still at risk despite Boeing effort with Trump

Feb. 20, 2017, © Leeham Co.: Boeing may have won over President Trump about the virtues of ExIm Bank (it’s not entirely clear), but he’s the wrong target. It’s US Sen. Richard Shelby (R-AL) who’s been holding up… Read More

Pontifications: Boeing’s long-term message doesn’t resonate

Feb. 20, 2017, © Leeham Co.: Boeing’s long-term messaging that all is well isn’t resonating with a number of industry analysts and observers. To be sure, today and in the short-term, Boeing’s stock is on a steady upward… 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

Assessing the MC-21 future

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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

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

Airbus sets new delivery record for 2016

By Bjorn Fehrm January 11, 2017, ©. Leeham Co: Airbus Commercial Aircraft presented a new record in yearly deliveries at its Press Briefing in Toulouse today.  The division of an integrated Airbus (therefore Airbus Commercial Aircraft, ACA) delivered 688… Read More