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Joined
3 yr. ago

Linux gamer, retired aviator, profanity enthusiast

  • Ah, you were a don't-stick-your-dick-in-crazy.

  • Okay yeah that's a little dumb. I could maybe see using WD-40 to free up a solenoid that was mechanically stuck but broken insulation says to me replace the part.

  • Hmm, that's interesting, I'm thinking like a pilot here but tip vortices increase in magnitude as AoA increasess, adding to adverse yaw of ailerons. I figured birds handled yaw control through wing sweep, kind of like how a weight shift trike does.

  • Sooooo WD stands for Water Displacer. It isn't a lubricant, it's more of a cleaning agent. It was originally developed to keep Atlas rockets from rusting. WD-40 might fix an electrical component by floating off any water-based electrolyte that might be shorting something out.

  • And thus shouldn't have been making command decisions in an engineering department. Did you inform whatever regulatory board?

  • To be fair, "blowjob" is a very stupid term for it.

  • So, guys don't care about a girls income that much. There's an entire subculture of men that prefers or demands being the sole breadwinner of their families. I'm going to say the word "tradwife" and consider my point made.

    Guys will go for an unemployed girl. Pretty and nice will get you a man. Which weren't you?

    Mind you, when I was in college I tutored freshman chemistry for an hour on Wednesdays and made more than $25/week at it; how delusional was your business plan?

  • We're in the science memes sub, I talked about the science. I actually have credentials in this subject.

  • No it's more that physics is a fickle bitch.

    Those spirals are called tip vortices. They occur because there is relatively high pressure under the wing and relatively low pressure above. At the wing tip, that higher pressure air wants to roll up over the wing tip to get to that low pressure area, which is what sets that spiral in motion. Any airfoil that is creating lift will have a vortex at its tip. Wings, tail surfaces, propeller blades, rotor blades, you name it. The higher the angle of attack, the more significant the tip vortex.

    Have you ever seen a jet airplane that has fuel tanks out at the wing tips? Most of the reason they're there is to reduce tip vortices and thus reduce drag. The additional fuel capacity is a minor byproduct. You might notice most newer airliners feature winglets; the wing tips are turned up. That's not for additional yaw stabilty, those are there to reduce tip vortices, decrease drag and decrease fuel consumption.

    Tip vortices are the main factor in wake turbulence, which is an entire class session in flight school. All a tower controller will say to you is "caution wake turbulence." And they're right. It's the pilot's job to know what to do about it, because trailing behind and below the wing tip of every airplane is an invisible sideways tornado you just have to know is there so you don't get thrown onto your Cessna's roof when landing behind a Boeing.

  • The bird flies despite the spirals, not because of them.

  • Correctly made, a PB&J should be symmetrical. A layer of peanut butter on each slice of bread with jelly in between, so the jelly doesn't sog up the bread, especially if the sandwich is to be stored for awhile as in a packed lunch.

  • I'm an above average candidate for the Connecticut Yankee In King Arthur's Court scenario. My hand isn't a chainsaw and my boomstick is a pump action Ithaca not a double-barrel Remington, but also I could make a radio more or less from scratch. You can make a point contact diode out of rusty iron and graphite.

  • I'm a flight instructor. Hearing my instructors' jokes in my voice was always wild.

  • I own a Prusa, a MK4S. They could stand to get their shit together a bit. I'm currently running two firmware versions behind because the last two years worth has been fucktrash.

  • Humpback whales are able to navigate exceptionally well and I don't think science knows how.

    Humpback whales travel by picking a direction and traveling in that direction. They can maintain a true course to within a degree of accuracy for hundreds of miles regardless of location on the planet, ocean currents, magnetic variation, day or night, though open empty ocean.

    I know how to do that, but I need stuff the whales don't have like visual reference to a solid surface, accurate charts, radio-based navaids, winds aloft forecasts, and/or gyroscopic instruments. Most of the time, most creatures either navigate by landmarks, some are able to navigate magnetically, some can home, ie they can sense a destination and point their noses at it and go that way, as forces such as winds, ocean currents, Coriolis force etc. push them off course they steer to keep the destination dead ahead, tracing a half-teardrop course.

    But humpbacks can pick a direction and go perfectly straight. Somehow.

  • That's an exceptionally adorable picture. You can just hear the tiny little purr.

  • I'd like to see them pair a bluetooth headset to a phone.

  • Funnily enough, those duty cycle limits played a significant role in history's worst aviation accident: The collision of 747s at Tenerife.

    The short version of the story: There was some bomb threat at a European airport, so traffic bound there had to divert to wherever else they could. A lot of them ended up landing on the Spanish island of Tenerife, at an airport not used to handling that much large aircraft traffic. This included two 747s full of passengers.

    When it was time for them to go, a thick bank of fog had rolled in. The taxiway was apparently not suitable for 747s so they had to taxi down the runway. The first of the two 747s had taxied to the end of the runway and was in position and ready for takeoff. Extremely ready for takeoff; the captain was pre-occupied with a recently tightened air crew duty cycle policy and was anxious to get home before going over his hours.

    The second was taxiing up the runway straight toward the first, and had missed a turn off the runway, so they were kind of jackknifed across the runway trying to figure out where they were.

    The captain of the first jet decided to take off without clearance from the tower. One 747 under full takeoff power T-boned another 747. Nearly 600 people died.

    I'm all for crew duty cycle rules, we shouldn't have exhausted pilots at the controls. Something that has kind of shut my life down is the notion that even our good laws turn poisonous when interpreted with absolute strictness. A pilot afraid of breaking the "You're not allowed to over-work pilots because flying tired is unsafe" law killed 583 people including himself.

    The video I linked above calls it "The Worst Air Disaster In History." It's one episode of a long-running series, and they always feel the need to come up with some similar line, so some of them are "The worst single-aircraft disaster involving a non-American made plane operated by an American airline to take place during daytime." I think my favorite quote from the show was during the Cross Air CFIT episode, "On board was Passion Fruit, Germany's answer to the Spice Girls."

  • sh.itjust.works Main Community @sh.itjust.works

    Anyone else getting Nicoled a lot lately?

  • Selfhosted @lemmy.world

    Recommendations for home media infrastructure esp. software?

  • Dull Men's Club @lemmy.world

    Standing around in my driveway in the middle of the night

  • Dull Men's Club @lemmy.world

    Cleaned the house, not that you'd notice

  • cats @lemmy.world

    Miss Chiff got rotated

  • Dull Men's Club @lemmy.world

    I had dental surgery

  • KDE @lemmy.kde.social

    Sticky monitor edge is driving me nuts

  • Showerthoughts @lemmy.world

    Do the old Greek, Norse or Roman gods take godhood of modern concepts?

  • Dull Men's Club @lemmy.world

    Nothing at all is going on.

  • Dull Men's Club @lemmy.world

    I found a book under my bed

  • Dull Men's Club @lemmy.world

    Yearly cocktail tradition

  • Linux Gaming @lemmy.ml

    Distro/software for living room/TV PC?

  • Ask Lemmy @lemmy.world

    Have you ever made up a movie after only seeing the trailer?

  • Dull Men's Club @lemmy.world

    I think I need to buy a part for my washing machine

  • Dull Men's Club @lemmy.world

    Cleaned my washing machine

  • Ask Lemmy @lemmy.world

    What's your personal little conspiracy theory?

  • Today I Learned @lemmy.world

    TIL miniblinds with pull cords to raise and lower them are now illegal to sell in the United States

  • Buildapc @lemmy.world

    Double check my Linux gaming build Update w/ Build pics

    pcpartpicker.com /list/Bh3T6D
  • Funny @sh.itjust.works

    My town is apparently holding a book tasting this month

  • Linux @lemmy.world

    BackInTime turns on my monitors