United Airlines pilots said pedals that control rudder movement on the plane were stuck as they tried to keep the plane in the center of the runway during the Feb. 6 landing.
The pilots were able to use a small nose-gear steering wheel to veer from the runway to a high-speed turnoff. The rudder pedals began working again as the pilots taxied to the gate with 155 passengers and six crew members on the flight from Nassau, Bahamas, according to a preliminary report by the National Transportation Safety Board.
Boeing said this is the only rudder-response issue reported on a Max, although two similar incidents happened in 2019 with an earlier model of the 737 called NG or next generation, which has the same rudder-pedal system.
The manufacturer said the issue was fixed by replacing three parts. The plane has made dozens of passenger-carrying flights since then, according to data from FlightAware.
Cold environment testing? Isn’t it like -40°C to -80°C at cruising altitude anyways?
Yes, and we have machines to do these things. Ours could easily fit 4 flight computers for a 4, 8, 12 or 24 hour test at -70C to something crazy like 50C
… so your machine could probably cool my GPU nicely is what you are saying …
Yes. And it could change the temperature very quickly too. Unfortunately I can’t remember how fast.
Ohh, rapid tem changes testing too, nice, probably with some active heat transfer system (… I mean a fan).
Specialised machines/tools/machine-tools are great to nerd out for a bit.
Like I said, I didn’t appreciate how cool it was at the time. I was also paid a third of what I make now, that might have something to do with it.
Oh, I recognise that feeling of not being able to enjoy or be proud of work that you dont dislike, just because you know how unfairly you are compensated.
when I was a kid, my dad worked at Lockheed… they had the coolest Take your Kid to Work Day. The basement was where the fun was- specifically the prototype testing lab with the 50 pound hammer that they were constantly knocking around mock ups of computer cabinets, the ginormous vibration table, and, yes, a cubical-sized refrigerator to do just that. The sound isolating chamber was also kinda cool… and spec sheets of the x33 demonstrator.
Thinking back on what I worked with, it was far more impressive than I realized at the time. We had 15 foot custom cables to connect the 125+ pin flight computer (four of them) to our test system. The test system also controlled the environment chamber, which had like 90 minute cycles from -70C to 50C but it also had a vibration table that has incredible acceleration. I believe it could reach near vacuum, and pressurize, I don’t remember how much.
Cubicle size - yeah that checks out. The other thing I remember about ours that it was extremely tall. And blue