MIT Expert Highlights 'Divergent Condition' Caused by 737 Max Engine Placement

https://www.forbes.com/sites/petercohan/2019/04/02/mit-expert-highlights-divergent-condition-caused-by-737-max-engine-placement/#697103940aab

by chethiya • 7 years ago

2 2 7 years ago

forbes.com

chethiya• 7 years ago

So this aircraft is more prone to stall and crash compared to other aircrafts after this update?

cjbprime• 7 years ago

I agree that there should be three AoA sensors, as Airbus already has, if you're going to connect the AoA sensors to a control surface.

But Hansman's comment seems (very surprisingly) inaccurate, because my understanding is that the MAX is not actually aerodynamically unstable: the lift from the nacelles results in a non-monotonic backpressure on the yoke as AoA increases, and that violates airworthiness regulations on yoke handling. But the plane isn't going to fly itself into a stall. The pilot has to do that by pulling back on the yoke at high AoA (and with less backpressure than a 737 pilot would expect).

That's not an unstable plane, in the sense that the B-2 bomber is unstable. It's just a plane that handles differently to pilots who originally trained on different but related planes.

MIT Expert Highlights 'Divergent Condition' Caused by 737 Max Engine Placement

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