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Ready! Player 31@lemmy.worldM to Microblog Memes@lemmy.worldEnglish · 2 years ago

Rockets

lemmy.world

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Rockets

lemmy.world

Ready! Player 31@lemmy.worldM to Microblog Memes@lemmy.worldEnglish · 2 years ago
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https://mstdn.social/@ElleGray/111067098463188124

elle @ElleGray I don’t mind that rockets are so obviously phallic but I do think the astronauts should have to come out of a tiny hole in the tip

  • NocturnalMorning@lemmy.world
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    2 years ago

    Aerospace engineer here, i know this is supposed to be a joke. Just wanted to tell you why they dont do this (besides for the joke). The nose of a rocket creates a shock wave that absorbs a large portion of the heat and energy create during ascent and entry. If it wasn’t for this, aka, we made the nose sharp, or had a Hatch to come out (which would weaken the rocket structurally), there’s a good chance the rocket would just burn up during the launch or return.

    The shape of a rocket nose was classified information for a really really long time bcz sharper shapes are more aerodynamic, so that’s the shape people thought we needed to use. But, once you reach speeds where shock waves are significant, and heat is a huge issue, that no longer works. So, we blunt the rocket nose.

    TLDR, it’s a heat thing.

    • Gonzako@lemmy.world
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      2 years ago

      That’s hot

      • NocturnalMorning@lemmy.world
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        2 years ago

        Stawp, you’re making me heat up…

    • hemko@lemmy.dbzer0.com
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      2 years ago

      Doesn’t dragon capsule have hatch in the nose for docking (hehe) on ISS?

      https://en.m.wikipedia.org/wiki/SpaceX_Dragon_2#/media/File%3ACrew_Dragon_at_the_ISS_for_Demo_Mission_1_(cropped).jpg

      • NocturnalMorning@lemmy.world
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        2 years ago

        I must be wrong abo7t the structural part then.

        • hemko@lemmy.dbzer0.com
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          2 years ago

          Just an engineering question

      • Pretzilla@lemmy.world
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        2 years ago

        Yea but that pointy end has a protective fairing over it for takeoff

    • Flying Squid@lemmy.world
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      2 years ago

      YOU’RE RUINING IT FOR ME!

      • NocturnalMorning@lemmy.world
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        2 years ago

        Sorry, I got caught up in the…heat…of things.

      • bobs_monkey@lemm.ee
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        2 years ago

        Looney tunes lied to us all

    • sethboy66@kbin.social
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      2 years ago

      So The Dictator had something right.

    • Afrazzle@sh.itjust.works
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      2 years ago

      Not an aerospace engineer but just a big fan of space/spaceflight. They do do this. Just about every manned spacecraft with a docking port has the part where astronauts come out at the tippy top (look at apollo, soyuz, shenzou, gaganyaan, dreamliner, dragon). They just wrap it up for launch with something that can protect them on the way up.

    • Ready! Player 31@lemmy.worldOPM
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      2 years ago

      Educational 🤘

    • SubArcticTundra@lemmy.ml
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      2 years ago

      Why was the shape of the rocket nose classified if you can literally see the shape?

      • a new sad me@lemmy.world
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        2 years ago

        Cuz when you first develop this missiles, in a world without internet and live stream. Then no one knew how the rocket looks like. Not until the official press release.

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