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A comment on Boeing Was ‘Go, Go, Go’ to Beat Airbus with the 737 Max. Parent comment

Re:Boeing Was ‘Go, Go, Go’ to Beat Airbus with the 737 Max by cjbprime on Saturday March 23, 2019 @10:19PM (#19473744)
I believe the Lion Air investigators have made public that there was a 20 degree differential between the two AoA sensors even when they were sitting on the runway before flight. (I don't have a source easily accessible.)
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Re:Boeing Was ‘Go, Go, Go’ to Beat Airbus with the 737 Max by newacct77 on Sunday March 24, 2019 @12:00AM (#19474209)
That's almost like saying two compasses should agree while standing on the north pole. These sensors need airflow to operate and provide meaningful indication.
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Re:Boeing Was ‘Go, Go, Go’ to Beat Airbus with the 737 Max by cjbprime on Sunday March 24, 2019 @12:19AM (#19474286)
It was during taxi for takeoff: https://theaircurrent.com/aviation-safety/the-world-pulls-th...
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Re:Boeing Was ‘Go, Go, Go’ to Beat Airbus with the 737 Max by inferiorhuman on Sunday March 24, 2019 @01:22AM (#19474519)
Sure, but they maintained their twenty degree difference for the duration of the flight. That's why the one stick shaker started going off shortly after rotation, why autopilot wouldn't engage, and why MCAS was going nuts.
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Re:Boeing Was ‘Go, Go, Go’ to Beat Airbus with the 737 Max by dgritsko on Sunday March 24, 2019 @12:45AM (#19474383)
Is that necessarily true? Based on this article (https://www.flyingmag.com/how-it-works-angle-attack-indicato...) it seems like they should be accurate regardless.
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Re:Boeing Was ‘Go, Go, Go’ to Beat Airbus with the 737 Max by pintxo on Sunday March 24, 2019 @05:25AM (#19475342)
Why should an AoA sensor require airflow? And if we are talking about airflow, we are talking about measuring pressur differentialsm right? How to do calculate an angle using a pressure differential?
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Re:Boeing Was ‘Go, Go, Go’ to Beat Airbus with the 737 Max by danaliv on Sunday March 24, 2019 @05:48AM (#19475404)
It’s literally just a metal plate that rotates with the oncoming air.
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Re:Boeing Was ‘Go, Go, Go’ to Beat Airbus with the 737 Max by pintxo on Sunday March 24, 2019 @09:42AM (#19476282)
Ok, makes sense.
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