• lud@lemm.ee
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      3 months ago

      You are not thinking of crashes. The rotor won’t have any time to slow down if the helicopter is about to crash into a building or the ground for reason unrelated to engine (or similar components) failure

  • Ekky@sopuli.xyz
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    3 months ago

    Just detach the blades. You can always re-attach them when you’ve landed.

  • unemployedclaquer@sopuli.xyz
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    3 months ago

    Sus. I watched AirWolf, and Magnum P.I. AND I’ve studied Leonardo di Vinci. Helicopters are next-gen tech and they don’t crash.

      • notabot@lemm.ee
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        3 months ago

        Several models of helicopters have ejectable blades, this article mentions a few, and has a diagram of the blade severing system.

        • Steak@lemmy.ca
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          3 months ago

          Damn never would have expected that. Thanks for showing me something new!

        • tibi@lemmy.world
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          3 months ago

          Now you have blades shooting away from the helicopter at a high speed which could kill someone.

        • TranscendentalEmpire@lemm.ee
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          3 months ago

          Mainly just copium for the pilots. Helicopters aren’t like airplanes where you have glide time and altitude to decide what to do after something bad happens. If you watch fixed winged ejections there’s usually about 30 seconds to a min after something goes wrong before the pilot decides to bail. Helicopters go from everything being fine, to a debris field in seconds.

          • Estiar@sh.itjust.worksM
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            3 months ago

            It’s more about altitude than the ability to glide. Helicopters can do what’s called Auto rotation, which means they actually can glide. If the blade seize up however, they can’t autorotate. Helicopters fly a lot lower than most airplanes though, so they can’t glide as far.

              • Estiar@sh.itjust.worksM
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                3 months ago

                Wow. I’d be nuts to fly one of those things. 6000 VVI sounds like suicide

                With the collective firmly held down on the bottom stop, things happen very fast. The helicopter is descending in a hurry, as in 4,000 – 6,000 feet per minute. Do the math, if you are at 1,000 feet and the descent rate is 4,000 feet, you have one quarter or a minute – 15 seconds – to find a place to land.

                • TranscendentalEmpire@lemm.ee
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                  3 months ago

                  Yeah, helicopters are the apex predators of soldiers and rich people. Even if you pull off the perfect autorotation, the glide ratio is still only a maximum of like 3:1.

                  I think I remember reading a report somewhere that more people have been killed by practicing autorotation than have actually pulled it off in the wild.

      • chiliedogg@lemmy.world
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        3 months ago

        The Kamov does it.

        The individual rotor blades are separated from the center with an explosive charge and their centrifugal motion carries them laterally away from the vehicle as the seat rockets straight up.

        • skulblaka@sh.itjust.works
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          3 months ago

          As a bonus, whoever was close enough to shoot you down is about to get at least one heavy steel javelin flung terrifyingly close to their direction at high speeds.

          I’m assuming here that impact with a long range SAM is probably something you’re not about to eject from.

          • chiliedogg@lemmy.world
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            3 months ago

            In cases like that I’d imagine you’d try and eject prior to being hit, though I don’t know enough to know how much warning time there is.

  • FartsWithAnAccent@fedia.io
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    3 months ago

    Why not blow the blades off first with a charge in the Jesus pin? Or have the seats eject siddeways or downward? Or like, open the door and jump out hoping you don’t hit he rotors?

    • tibi@lemmy.world
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      3 months ago

      Because now you have blades shooting away from the helicopter at a high speed which could kill someone.

    • some_designer_dude@lemmy.world
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      3 months ago

      Can’t believe I had to scroll this far to find the real solution. Eject rotors, then eject pilots. I think fighter jets basically do the same: eject canopy, then seat.

    • sushibowl@feddit.nl
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      3 months ago

      If you eject downward you may hit the ground before your chute has opened. Helicopters tend to stay pretty low.

    • sushibowl@feddit.nl
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      3 months ago

      I don’t know of any ejection seats that go sideways, but early F-104 models had a downward track ejection seat. The main issue is that parachutes need some time to open and helicopters tend to fly pretty low. So in most situations you wouldn’t be in a safe altitude to actually eject.

      Modern zero-zero seats can safely eject at any altitude, but they do so by using a rocket motor to fly upwards to a safe altitude for the parachute to open. So because of the rotors, helicopters generally don’t have ejection seats. The exception is the Kamov KA-50 series. It has explosive bolts blowing off the rotors before ejection.

      • mindbleach@sh.itjust.works
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        3 months ago

        Presumably less “blowing off” and more “letting go.” They’re already being spun with as much centripetal force as they’ll tolerate. The explosive only needs enough oomph to make itself disappear.

        Which had to be a weird pitch. Like, ‘for safety reasons, we’re going to stitch this together with detcord.’

  • Admetus@sopuli.xyz
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    3 months ago

    I think it’s the Apache helicopter that stops the rotors instantly on eject. No need for Mach 13. I know this graphic is a joke though, I just remembered this cool thing about the helicopter.

  • nullpotential@lemmy.dbzer0.com
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    3 months ago

    Attach the ejector seat TO the helicopter blades so that they both eject and you get a cool propeller and can fly around and it can shoot lasers and stuff too.