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Thread: SpaceX Starship & StarHopper [Super Heavy pad construction]

  1. #46
    Moderator Dr Mordrid's Avatar
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    Austin Barnard @austinbarnard45

    SpaceX crews are hard at work today, as you can see in the photos down below. With the attachment of the first section of StarShip Fin, crews were also seen lifting and moving the replacement section of the nose cone. https://t.co/S8hJyf6PEo

    IMG_20190921_132208.jpg

    IMG_20190921_132212.jpg

    IMG_20190921_132217.jpg

    IMG_20190921_132221.jpg

    https://twitter.com/austinbarnard45/...57767915741184
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  2. #47
    Moderator Dr Mordrid's Avatar
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    Doing the Starship mods will go fast because most of the mechanicals were built off-site and stored.

    Julia Bergeron @julia_bergeron
    While @BocaChicaGal is watching fins, I see ground being broken and construction beginning at 39A for the Starship launch pad. I expect this is going to happen fast with Starship MK2 being moved soon. So much equipment in movement! #Starship #39A @elonmusk

    https://twitter.com/julia_bergeron/s...42887611494405
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  3. #48
    Super MURCer Evildead666's Avatar
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    Quote Originally Posted by Dr Mordrid View Post
    Austin Barnard @austinbarnard45

    SpaceX crews are hard at work today, as you can see in the photos down below. With the attachment of the first section of StarShip Fin, crews were also seen lifting and moving the replacement section of the nose cone. https://t.co/S8hJyf6PEo

    IMG_20190921_132208.jpg

    IMG_20190921_132212.jpg

    IMG_20190921_132217.jpg

    IMG_20190921_132221.jpg

    https://twitter.com/austinbarnard45/...57767915741184
    Sweet stuff

    Its great to see the pics with humans in the view, so you get a good perspective of just how Huge this thing is.

    The two holes on the first pic are for refueling I guess ? One for each tank ?
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  4. #49
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    Quote Originally Posted by Evildead666 View Post
    Sweet stuff

    Its great to see the pics with humans in the view, so you get a good perspective of just how Huge this thing is.

    The two holes on the first pic are for refueling I guess ? One for each tank ?
    Manholes for servicing the LOX (top) and CH4 (bottom) tanks, the downcomer (top to bottom LOX line), and any internal equipment.

    Propellant loading/unloading will be pad --> bottom of the Super Heavy booster ->> through the interstage --> into the Starship. These bottom-mounted propellant connectors will also be used for refuelling in orbit, via a Starship tanker variant. They'll "mate" tail to tail.

    https://twitter.com/elonmusk/status/1175812366019244032



    Q: will it be stacked by the 28th?

    https://twitter.com/elonmusk/status/1175814780323545093

    Elon Musk ✓ @elonmusk
    Yes. Theres a huge amount of hardware in the tip of the faring that being integrated on the ground, which is why we havent closed it out.

    https://twitter.com/elonmusk/status/1175815628525060096

    Elon Musk ✓ @elonmusk
    Nose tip has forward movable fins, cold gas attitude control thrusters, header tanks for landing, composite pressure vessels, several large batteries, etc. Placed up there to balance high mass of Raptors & rear fins at the bottom.

    https://twitter.com/elonmusk/status/1175818733648003072

    Elon Musk ✓ @elonmusk
    Stability is controlled by (very) rapid movement of rear & fwd fins during entry & landing, as well as ACS thrusters. The smaller leeward fin would simply be used as a leg.
    |
    Current analysis, which I'm not fully bought into, suggests that 2 rear fins with separate airframe-mounted legs will be lighter, so this is the plan for Mk1/Mk2

    (Translation: 2 fins + hull mounted legs for now, maybe a 3rd fin/leg later)

    https://twitter.com/kalzsom/status/1175821523954937857

    @kalzsom
    Does this modification of the rear fin setup affect the fore (or top) fins or will they stay the same?

    https://twitter.com/elonmusk/status/1175822175913283584

    @elonmusk
    For aero control, it comes down to % of cross-sectional area moving vs not. Flexible as to whether front or rear, so long as within bounds of center of mass & pressure.

    https://twitter.com/cptncrutch5373/s...23295977066497

    @cptncrutch5373
    Could they not just shove the bottom fin back, shove the top fins forward, and wait until its the right way around, then fire the engines and move the fins back flat... seems logical to me...

    https://twitter.com/elonmusk/status/1175824881927278597

    @elonmusk
    Approximately correct. We also fire the ACS thrusters to rotate the vehicle & ignite Raptors at full gimbal angle to complete the turn.
    Last edited by Dr Mordrid; 22nd September 2019 at 15:00.
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  5. #50
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    Raptor, the first Full Flow Staged Combustion engine to ever fly.

    FFSC's push 100% of their propellant mass out of the nozzle for maximum efficiency. No gas generator, etc.

    This Raptor version isn't full grown, topping off at about 200-250 tonnes of thrust. It'll iterate, quickly, to about 300 tonnes

    The Mk1 and Mk-2 Starships will start out with 3 sea level Raptors, 6 being the standard powerpack; 3 sea level and 3 vacuum. Vacuum Raptor, for use in space, has a much larger nozzle.

    Up to 9 sea level Raptors could be used for specialized purposes - such as Earth-2-Earth transportation; 10,000 km in <30 minutes.

    Raptor is highly scalable, so MUCH larger and smaller versions are possible.

    Russia and the US tried to develop a FFSC engine in the 1960's and 2000's respectively, but they never left the test stand.

    @austinbarnhard45
    Last edited by Dr Mordrid; 22nd September 2019 at 15:35.
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  6. #51
    Moderator Dr Mordrid's Avatar
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    The Raptors are already installed? 😁

    Elon Musk ✓ @elonmusk
    Just leaving SpaceX Starship build site in Boca

    https://twitter.com/elonmusk/status/1176007759751499776

    [video at tweet]
    |
    Bottom half of Starship at night. Top half with forward fins & header tanks probably stacks on Wednesday. Three Raptors already installed. https://t.co/haq3m1V1Wm



    https://twitter.com/elonmusk/status/1176009047729954818
    Last edited by Dr Mordrid; 23rd September 2019 at 01:29.
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    OK, so we're still all going to Mars, we'll just rename it "Musk" when we get there

    edit : Or just pronounce it that way
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    It's like watching them build the Fireball XL5. In real time.

  9. #54
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    Quote Originally Posted by Evildead666 View Post
    OK, so we're still all going to Mars, we'll just rename it "Musk" when we get there

    edit : Or just pronounce it that way
    In Werner von Braun's novel 'Project Mars: A Technical Tale' the leader of the Mars colony is called "The Elon."

    Dr. Mordrid
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  10. #55
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    Quote Originally Posted by Dr Mordrid View Post
    In Werner von Braun's novel 'Project Mars: A Technical Tale' the leader of the Mars colony is called "The Elon."

    It was Destiny then LOL
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  11. #56
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    The cargo module halves have been re-stacked, and a monster crane has lifted the propulsion module into Roll-Lift crawler-transporters. It's now being moved, and well past the cargo module. This may be final assembly, either here or at the pad. We'll see...



    Last edited by Dr Mordrid; 25th September 2019 at 14:20.
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    SPadre @SpacePadreIsle
    Big yellow crane just arrived in position to lift the nose cone...

    EFVuLykXkAALW6L.jpeg

    https://twitter.com/SpacePadreIsle/s...68087331115008
    Dr. Mordrid
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  13. #58
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    Note that this transporter did not cost $100m (SLS snark)

    6 legs to be attached; one under each fin, two on the ventral (heart shield) side, two on the dorsal.

    Hinges, actuators and fin joint cover fairings also to be added.

    Elon Musk ✓ @elonmusk
    On the transporter



    https://twitter.com/elonmusk/status/1177050841041125376
    Last edited by Dr Mordrid; 26th September 2019 at 01:53.
    Dr. Mordrid
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  14. #59
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    It normally will have 6, 3 sea level and 3 vacuum, but it can use more if all are sea level engines (smaller nozzles). Only the center 3 can gimbal (steer), up to 15°.

    Elon Musk √ @elonmusk
    Three Raptors on a Starship







    https://twitter.com/elonmusk/status/1177314408604680192
    Last edited by Dr Mordrid; 26th September 2019 at 15:00.
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  15. #60
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    HEADS UP

    Dave Mosher ✔ @DaveMosher (Business Insider)

    SpaceX should livestream Elon Musk's #Starship presentation from #BocaChica around 8 p.m. ET (7 p.m. CT/local) on Saturday. Exact event location: Not yet clear. But it has to be either at the company's work yard (near control center) or launch pad (near Boca Chica Beach).
    7:57 PM - Sep 26, 2019

    https://twitter.com/DaveMosher/statu...71732270833665
    Dr. Mordrid
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    I carry a gun because I can't throw a rock 1,250 fps

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