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Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
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Re: Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
#12For anyone else (besides me, being Dutch) wondering about the name: https://en.wikipedia.org/wiki/Dutch_roll?useskin=vector#Name
TL;DR: it's from ice skating where there's a similar move. But no idea why it's called that in ice skating.
Re: Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
#13For those unfamiliar with Dutch Roll -
https://en.wikipedia.org/wiki/Dutch_roll
Noteworth there: The 2013 fatal crash of a Boeing KC-135R, after its rudder PCU failed. The article places preliminary blame (for the new incident) on the 737-8's rudder PCU.
One might wonder about the design, components, and processes commonalities between rudder PCU's for the KC-135R, and 737-8.
Re: Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
#14How does this impact the share holders?
Re: Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
#15"Dutch Roll is a coupled out of phase movement of the aircraft as result of weakened directional stability (provided by the vertical tail and rudder), in which the aircraft oscillates around its vertical as well as longitudinal axis (coupled yaw and roll)." That sounds pretty scary. I wonder why it wasn't bigger news when it happened last month?
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Re: Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
#16"Dutch Roll is a coupled out of phase movement of the aircraft as result of weakened directional stability (provided by the vertical tail and rudder), in which the aircraft oscillates around its vertical as well as longitudinal axis (coupled yaw and roll)." That sounds pretty scary. I wonder why it wasn't bigger news when it happened last month?
I wonder if the name is related to the Dutch Tilt camera shot - https://en.wikipedia.org/wiki/Dutch_angle
Re: Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
#17Horses are very stable
I hever never once heard of a dutch roll occuring to a train.
Am on a Dutch train right now and there is a distinct lack of roll, Dutch or otherwise.
That said, I wonder where the term Dutch Roll comes from. Perhaps the oscillation is reminiscent of the motion of a ship rocking side to side. The Dutch were a major sea power.
Re: Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
#18Thing is this could just keep going. There’s no telling how many bad apples Boeing put out there
Re: Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
#19Re: Southwest Airlines Boeing 737-8 Max Experienced Dutch Roll
#20"Dutch Roll is a coupled out of phase movement of the aircraft as result of weakened directional stability (provided by the vertical tail and rudder), in which the aircraft oscillates around its vertical as well as longitudinal axis (coupled yaw and roll)." That sounds pretty scary. I wonder why it wasn't bigger news when it happened last month?
Here's a video demonstrating it: