SwitchyandWitchy [she/her]

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Joined 11 months ago
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Cake day: December 18th, 2024

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  • Not exactly the same but very similar. AA191 was caused by improper maintenance that weakened the rear pylon mount. We don’t yet know why the rear mount failed but this time but the prelim report claims the spherical bearing lug had metal fatigue cracks as well as signs of overstress, but doesn’t mention any dents like we’re present on AA191: (Sorry for the yt screenshot it was the only place I could find this picture yesterday)

    Also AA191 crashed due to assymetrical lift due to the slats retracting as hydraulic pressure was lost on the affected wing, this time iirc the slats remained extended and the plane just didn’t have enough thrust. It’s possible that debris from the engine separation were injested by the #2 engine causing it to lose thrust as well while the plane was extremely heavy.


  • For some of the really flight critical stuff that I picked their brains on, the on-cpu cache was disabled because using it would make deterministally analyzing the executive time too difficult. There also wasn’t a pre-emptive multitasking scheduler but instead every task would run during a scheduled time slot in a big superloop.

    All of this caution actually made the software a lot more primitive than the software that Margaret Hamilton led the development of for the Apollo program, but these days cpu cycles and memory are a lot cheaper than the engineering time to implement all these things in a safe way, or so they said.





  • SwitchyandWitchy [she/her]@hexbear.nettoChapotraphouse@hexbear.netYes
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    23 hours ago

    brogrammers rejected it. Nerds like Margaret Hamilton stood on principle

    This caption is misleading btw. She never worked directly for NASA, she worked at MIT who were contracted by NASA for the software.

    I also know people who have worked in nuclear energy and aviation software and they are really serious about not taking shortcuts. And regularly complain about higher ups saying things and occasionally pressuring them against industry standards in the name of speeding things up.













  • So let me see if I understand: You’re going to uncritically accept the NYT’s framing of a second hand account of what Zohran Mamdani said to a bunch of New York elites, where these journalists didn’t even trust themselves to use quotes when describing what he said but rather just quoting individual words taken out of context from again, possibly unreliable sources.

    In fact the only partial quote more than single words in the entire article from him on the subject is this:

    Just two weeks ago, shortly after his primary victory, Mr. Mamdani said in an interview on “Meet the Press” that the term was “not language that I use” but that “I don’t believe that the role of the mayor is to police speech.”

    This is deeply unserious posting from you and lacking any critical thought, or just completely dishonest.