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Cake day: June 18th, 2023

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  • It’s a real geopolitical problem for Russia. Russia got screwed by geography in terms of natural harbors that don’t freeze over in the winter. It’s why they’ve always had a crap navy, going way back into the imperial days.

    Right now, the Russian Navy is based in Murmansk (brrrr. limited routes to get out into Atlantic) and the Black Sea. The Black Sea is bad for them because Turkey (a NATO member) makes sure to maintain total control of what passes through the Bosphorous.

    Part of what Russia did in Syria during the civil war netted them a lease on a base on the Mediterranean. That could have had some use for power projection, but I think they lost it when a certain opthalmologist was expelled.

    Anyhow, it’s hilarious when the trolls posing as MAGA Americans bring this up, because real Americans just take their total abundance of ports that don’t freeze over completely for granted. That’s why I point out secondary, less busy port cities on the Gulf of Mexico, where the water is actually pretty warm (instead of just not freezing over). Just to highlight how good the US has it. Even if we were forced to give up Norfolk and Coronado, there are plenty of other suitable places we could have naval bases.






  • mkwt@lemmy.worldtoScience Memes@mander.xyzAeroplane
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    28 days ago

    I’m pretty sure on newer 737s the autopilot disconnects when it detects a sufficient physical force on the yoke.

    On airplanes that don’t do this, the autopilot servos are clutched so that you can still override them by applying a specified amount of force. There are reinforced points on the bottom of the dash panel that you can use with your foot to get leverage to help with this.

    (This also applies as a backup on planes that do disconnect)




  • mkwt@lemmy.worldtoScience Memes@mander.xyzAeroplane
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    28 days ago

    Some more practical tips.

    • if the autopilot is engaged, you can’t physically move the wheels, because it is moving them for you. Press the red button on the steering wheel to disconnect autopilot.
    • That IAS tape on the left of the sky/ground box is the most important thing on the plane. It’s got red bands on the high side and low side that you should stay out of.
    • if the plane tells you there’s a “stall, stall” you need to push the wheels forward to make the nose go down. And keep the speed above that lower red band.
    • the black button on the wheel is the push-to-talk to talk on the radio, or maybe the internal PA system. Depends how it’s set up.
    • most important: the switch for the “fasten seatbelt” sign is usually on the bottom of the top panel. You can flip it on and off as much as you want. (Older planes will also let you do this with the “no smoking” sign).



  • mkwt@lemmy.worldtoScience Memes@mander.xyzone bright second
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    2 months ago

    And Hawking radiation. Hawking radiation is pretty “dark” for solar-mass scale black holes and up, but it can become relatively very intense for smaller holes.

    For the holes we observe astronomically, the things we can see are the accretion disks and the orbits of stars around the black hole.