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Cake day: July 1st, 2023

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  • And to add to the conversation(if there’s anything incorrect please let me know) from videos I’ve seen by MentourPilot, Captain Joe and online sources

    The process will most likely look like the following (assuming an emergency descent is needed because the cabin can’t be pressurized like with the window vs some smaller hole air leak):

    • They will put on their own o2 masks (it’s critical to do this as you can lose consciousness in under a minute)

    • They will set the transponder to a code that denotes the emergency to both ATC and nearby traffic

    • They will radio the distress both for ATC but also nearby planes to give them a heads up that they’ll be rapidly descending. If it’s in a high traffic area they may wait for approval to begin descent (and you can be sure ATC is going to be moving planes out of the way.). If it’s taking too long they will begin descending anyway.

    • They’ll announce to the cabin that they’re doing an emergency descent

    • They will start a rapid descent to 10,000 ft (if terrain allows it, otherwise down to whatever they can safely get to). This is because the emergency o2 is limited to about 15 minutes.

    Some interesting things I learned about this.

    They will often use autopilot for the descent and level flight. This is because of limited visibility and a risk of possible issues caused by low o2.

    They turn on all lights to make sure they’re as visible as possible to other traffic.

    This descent will be really unpleasant. Not a gentle descent but the safest one (especially if they’re unsure if there’s any structural issues) they can do. Which will be quite a bit steeper than anybody is used to.

    So passengers on the plane will experience this as:

    • Loud rushing noise. Possible moisture filling the cabin now that you have outside cold air mixing with warm air and surfaces inside

    • Masks dropping and seatbelt signs

    • Shortly after the Captain saying “Emergency descent” 3 or so times

    • Flight screw scrambling to seats and putting on masks

    • The sound of the wings adjusting for speed brakes, shuddering from the flight profile change,

    • The sounds of the engines being revved up to the planes maximum speed as the nose of the plane tipping down. It will feel like it’s faster than it really is with the shift in gravity followed by being pressed back due to the increase in speed during descent.

    • The plane shifting as they turn away from the main traffic area as they descend (unless told otherwise by ATC, etc)

    Not a fun experience I’m sure

    Some sources to check out

    Emergency descend!! Cockpit video

    Explosive decompression at Simulador TCP. EAS Barcelona pilot school

    Pressurisation Problems: Guidance for Flight Crews

    Aircraft “Falling” - Emergency descend explained




  • I don’t have a Bambu but what they also need to look at is retraction settings after purging the extra filament.

    Seems like it needs to retract a little more to lower the “pressure” of the melted filament in the nozzle.

    Best analogy is that this is like a giant glue gun. Squeeze really hard and fast and the glue isn’t going to stop when you let up in the trigger. Except, with a printer, you can have the extruder “retract” a little which does introduce a vacuum effect and slow/stop the oozing.

    Note: make small adjustments with a direct drive (which most of these printers are using these days) so you don’t pull molten plastic into the heatbreak and have to deal with clogs. However, if it’s oozing out you’re probably not even close to that being an issue.

    I use Klipper and OrcaSlicer but when I get a new type of Filament (ABS, PLA, TPU) I tune it including retractions. This way it does cleaner lines and is less likely to leave blogs, stringing. And tuning filament retractions here (or something specific to purges) should fix the issue.




  • The one mechanic is similar, yes. But the gameplay and exploration are drastically different.

    I can’t praise the game enough… it’s just so good.

    For example. You’re in a dungeon and then it happens and you go back.

    In some ways something happens when you’re pulling on some thread. There’s no dungeons, no goal (explicitly). You are exploring and as you learn more you realize there’s areas to check out because they’ll answer some question you have about what happened or why something is the way it is.

    In this case perhaps the mechanic occurs and you find yourself briefly annoyed. But then you go back to the spot, this time things are in a different place and state and you realize something happens that allows you to go further which leads to another thread/mystery.

    And then you’re off. As time goes on you learn to accept and then even invite it. More and more you unravel deeper mysteries, learning what and why and then seeing earlier conclusions in a new light.

    Why it’s happening, how it’s happening, what can be done and can’t, etc. it’s really a one of a kind experience.