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elonmusk's profile
Elon Musk
Elon Musk
Elon Musk
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@elonmusk

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Elon MuskVerified account

@elonmusk

Technoking of Tesla, Imperator of Mars 😉

Joined June 2009

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    1. Everyday Astronaut‏Verified account @Erdayastronaut 24 Jul 2019

      What's with the ceramic black tiles being tested on today's #CRS18 Dragon capsule for StarShip? Is there going to be ceramic tiles on StarShip for the heatshield instead of just Stainless Steel now? Obeying laws of black body radiation and avoiding reflective surfaces @elonmusk?

      24 replies 26 retweets 823 likes
    2. The Space Goat‏ @goathobbit 24 Jul 2019
      Replying to @Erdayastronaut @elonmusk

      Hmm ceramics always seem sketchy to me but they are such marvelous insulators. I thought the idea behind starship was to make it as reflective as possible though, to reflect IR coming from the bow shock?

      3 replies 3 retweets 115 likes
    3. Everyday Astronaut‏Verified account @Erdayastronaut 24 Jul 2019
      Replying to @goathobbit @elonmusk

      The more I learn about black body radiation, the more I realize a reflective surface is exactly what you don't want.

      7 replies 12 retweets 278 likes
    4. Elon Musk‏Verified account @elonmusk 24 Jul 2019
      Replying to @Erdayastronaut @goathobbit

      High reflectivity minimizes photonic heating, high emissivity minimizes particle heating. No need to radiate heat away if you aren’t hot in the first place. Also, as metal heats up to yellow/red/white, it stops being reflective.

      62 replies 72 retweets 1,342 likes
    5. Everyday Astronaut‏Verified account @Erdayastronaut 24 Jul 2019
      Replying to @elonmusk @goathobbit

      So what's the ceramic for that was flown on Dragon today? Certain extra hot spots?

      7 replies 16 retweets 400 likes
    6. Elon Musk‏Verified account @elonmusk 24 Jul 2019
      Replying to @Erdayastronaut @goathobbit

      Testing a possible Starship windward side ceramic tile. Maximizing emissivity is best for conductive/particle heating. Nice thing about steel is that tiles can be very thin, unlike carbon fiber or aluminum airframe.

      67 replies 66 retweets 1,278 likes
    7. Everyday Astronaut‏Verified account @Erdayastronaut 24 Jul 2019
      Replying to @elonmusk @goathobbit

      No more bleeding out methane and transpirational cooling? Or maybe some of each? See where the physics takes you?

      12 replies 13 retweets 640 likes
      Elon Musk‏Verified account @elonmusk 24 Jul 2019
      Replying to @Erdayastronaut @goathobbit

      Thin tiles on windward side of ship & nothing on leeward or anywhere on booster looks like lightest option

      8:19 PM - 24 Jul 2019
      • 42 Retweets
      • 1,348 Likes
      • Kobe Carl Groover Luke Zering Tony Wang Ryan Shepherd Tommy van der Wal Sylvain Bougerel Andrei Ghitea Konrad Skagerberg
      69 replies 42 retweets 1,348 likes
        1. New conversation
        1. baconmashwbrownsugar‏ @baconmashwbs 24 Jul 2019
          Replying to @elonmusk @Erdayastronaut @goathobbit

          Another hop attempt tonight?

          1 reply 0 retweets 4 likes
        2. John Luke‏ @JlukeJohn 24 Jul 2019
          Replying to @baconmashwbs @elonmusk and

          They had attempted a second time but it was just scrubbed.

          0 replies 0 retweets 1 like
          3. End of conversation
        2. New conversation
        1. Noah Haggerty‏ @nohaggerty 24 Jul 2019
          Replying to @elonmusk @Erdayastronaut @goathobbit

          any starhopper updates?

          1 reply 0 retweets 5 likes
        2. Noah Haggerty‏ @nohaggerty 24 Jul 2019
          Replying to @nohaggerty @elonmusk and

          ahhh looks like they scrubbed for the night per @NASASpaceflight

          0 replies 0 retweets 2 likes
          3. End of conversation
        1. meg’n‏ @megadextrious 24 Jul 2019
          Replying to @elonmusk @Erdayastronaut @goathobbit

          😊

          0 replies 0 retweets 0 likes
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        1. Darren Erb‏ @UnInc13 24 Jul 2019
          Replying to @elonmusk @Erdayastronaut @goathobbit

          Hopper flight tonight?

          0 replies 0 retweets 1 like
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        1. Bill the Bull  🐂 📈 🚀‏ @GuiStroz 24 Jul 2019
          Replying to @elonmusk @Erdayastronaut @goathobbit

          What about the hop test, any news?

          0 replies 0 retweets 1 like
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        1. Embry-Cove Ryder‏ @MartianDays 24 Jul 2019
          Replying to @elonmusk @Erdayastronaut @goathobbit

          I can’t wait to see this ship. She’s gonna be gorgeous. ❤️

          0 replies 0 retweets 25 likes
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        7. New conversation
        1. Anthony Iemole‏ @SpaceXFan97 24 Jul 2019
          Replying to @elonmusk @Erdayastronaut @goathobbit

          Livestream for 2nd Starhopper attempt tonight?

          1 reply 0 retweets 1 like
        2. Michael Bray‏ @flmbray 24 Jul 2019
          Replying to @SpaceXFan97 @elonmusk and

          You can watch on Everyday Astronaut,https://www.youtube.com/watch?v=Rfb0cd17IAY …

          1 reply 0 retweets 0 likes
        3. Show replies

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