Subscription Required Introduction March 4, 2019, © Leeham News: Rolls-Royce last week announced it had withdrawn from competition for the Boeing NMA engine provider, citing a mismatch in timing between its Ultra Fan being ready and Boeing’s desired… Read More
March 4, 2019, © Leeham News: Another week, another NMA story. For an airplane that doesn’t exist, the prospective Boeing NMA continues to dominate much of the aerospace news. Last week’s announcement by Rolls-Royce that it withdrew—in December,… Read More
March 01, 2019, ©. Leeham News: We now continue our discussion of the yaw stability of an airliner. Last week we defined the basic conditions of yaw stability. The aerodynamic side force from an angled airflow stemming from… Read More
Feb. 28, 2019, © Leeham News: The announcement today by Rolls-Royce that it has withdrawn from the competition to provide an engine for the Boeing New Midmarket Airplane came as a surprise. This leaves CFM and Pratt &… Read More
Subscription Required Introduction Feb. 28, 2019, © Leeham News: Embraer’s shareholders this week approved the joint venture between their company and Boeing, moving another step closer to completion expected by the end of this year. Boeing will own… Read More
Subscription Required Introduction Feb. 25, 2019, © Leeham News: The longer Boeing dithers on launching the New Midmarket Airplane, the harder it is to close an already difficult business case. News last week that Airbus finally, at long… Read More
Feb. 25, 2019, © Leeham News: Even as Boeing put off a decision whether to launch the New Midmarket Aircraft until 2020, next month could be an important milestone—not only for the program but especially for the engine… Read More
Feb. 22, 2019, ©. Leeham News: After discussing an airliner’s pitch stability we now turn to the yaw stability. A stable aircraft in yaw means we don’t want the aircraft to wag its tail sideways while flying. The… Read More
Subscription Required Introduction Feb. 21, 2019, © Leeham News: Airbus is boosting the A320 production to 60/mo this year and 63/mo next year. But it’s put a pause on increasing the A350 rate from 10/mo to 13/mo. Boeing… Read More
Subscription Required Introduction Feb. 18, 2019 © Leeham News: Airbus’ decision to end the A380 program clears the path, if chosen, for a plane that was studied three or four years ago: the stretch of the A350-1000 to… Read More