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Thread: SpaceX

  1. #3301
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    Some sort of emergency de-tanking going on. I hope that's not methane.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  2. #3302
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    Betting on LOX or N2 from the CH4 recondenser. Waiting for Elon to tweet.

  3. #3303
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    There may have been an offshore boat. Image is fuzzy.

    Venting again

  4. #3304
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    Everyday Astronaut @Erdayastronaut
    @elonmusk looks like you guys got close to T-0! Thinking you will have another attempt today?
    |
    Elon Musk @elonmusk
    Most likely

    https://twitter.com/elonmusk/status/1290710257728024578

  5. #3305
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    With all the cryo something they just dumped I find it surprising they'd have enough on hand to try again today.
    Kind of interesting watching that cold geyser. You could actually see liquid at the top. It looked very much like the hot kind.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  6. #3306
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    I definitely think the plume was LN2 used to re-liquify vented CH4, with the now gaseous N2 vented.

    USCG is prowling the area. SpaceXers are checking SN-05 before trying again.

  7. #3307
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    Thing is though, it was coming from the flare stack, which is supposed to be for burning off CH4.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  8. #3308
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    Quote Originally Posted by Trebuchet View Post
    Thing is though, it was coming from the flare stack, which is supposed to be for burning off CH4.
    It was coming from a vent stack of some kind. Are you sure it was a flare stack? Rapidly condensing a lot of gaseous CH4 or subcooling warmed LCH4 can boil a lot of LN2.

  9. #3309
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    Quote Originally Posted by cjameshuff View Post
    It was coming from a vent stack of some kind. Are you sure it was a flare stack? Rapidly condensing a lot of gaseous CH4 or subcooling warmed LCH4 can boil a lot of LN2.
    I heard someone (Tim Dodd?) say that they no longer flare off the CH4 but reclaim/recycle it.

    CJSF
    "Off went his rocket at the speed of light
    Flying so fast there was no day or night
    Messing around with the fabric of time
    He knows who's guilty 'fore there's even a crime

    Davy, Davy Crockett
    The buckskin astronaut
    Davy, Davy Crockett
    There's more than we were taught"

    -They Might Be Giants, "The Ballad Of Davy Crockett (In Outer Space)"


    lonelybirder.org

  10. #3310
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    10-15 min to T-0

    https://youtu.be/5QbM7Vsz3kg

  11. #3311
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    Quote Originally Posted by CJSF View Post
    I heard someone (Tim Dodd?) say that they no longer flare off the CH4 but reclaim/recycle it.

    CJSF
    I think that was always the plan, but this morning's event was something else.

    LabPadre guys think we're within a couple of minutes, moving to big screen.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  12. #3312
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    Hopped and landed. Maybe slightly off kilter.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  13. #3313
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    Looks like one leg isn't fully extended, but Qapla'!!

  14. #3314
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    That was...impressive

  15. #3315
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    Quote Originally Posted by CJSF View Post
    I heard someone (Tim Dodd?) say that they no longer flare off the CH4 but reclaim/recycle it.
    Yes, with liquid nitrogen as the coolant. If they need to rapidly depressurize after an abort, that's going to boil a lot of LN2.

  16. #3316
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    LabPadre guys think it's the camera that's off kilter. They are probably right.

    I have a LOT of problems with Elon Musk in general. He has repeatedly said and done some stupid stuff. He ought to hire someone to hold his tweets until the next day. But what he has done with SpaceX (and Tesla) is revolutionary. World changing.
    Even if Starship ultimately comes to naught, it'll have changed some thinking. Falcon already has.

    A couple of years ago, NASA hired two companies to fly astronauts to the ISS. One didn't exist twenty years ago, the other one is the largest aerospace company in the world, with decades of launch and spacecraft design experience. Guess which succeeded and which failed.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  17. #3317
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    The Associate Administrator of NASA chimes in..

    Thomas Zurbuchen @Dr_ThomasZ
    And when the smoke cleared, she stood there majestically, after the 150 meter flight!

    Congrats, @SpaceX

    IMG_20200804_202211.jpg

    https://twitter.com/Dr_ThomasZ/statu...00171123527680

  18. #3318
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    SN-08 is next with a nose, full fin set, etc.

  19. #3319
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    Another view of the hop,

    https://youtu.be/_rr4sb2oB-c

  20. #3320
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    New info

    Elon Musk @elonmusk
    V1.1 legs will be ~60% longer. V2.0 legs will be much wider & taller like Falcon, but capable of landing on unimproved surfaces & auto-leveling.
    |
    Eric Belardo
    Replying to @elonmusk @bluemoondance74 and 2 others
    when will you do a hop and a relight? i.e. - land and take off again?
    |
    Elon Musk @elonmusk
    Soon

    https://twitter.com/elonmusk/status/1290819191835164672

    https://twitter.com/elonmusk/status/1290819744690507781

  21. #3321
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    Ars Technica space writer,

    Eric Berger @SciGuySpace
    Just so we're clear, SpaceX built a Mars rocket out of rolls of steel, in tents, in South Texas, in weeks. And the first time they flew it, it made a smooth launch, a controlled flight, and safely landed. This is truly remarkable.
    |
    Mars is still long freaking way away. So very far. But the first step is low-cost, frequent access to space for tons of stuff. This is the first step toward that first step. And it's a big one.

    https://twitter.com/SciGuySpace/stat...01282463207425

  22. #3322
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    Quote Originally Posted by docmordrid View Post
    Another view of the hop,

    https://youtu.be/_rr4sb2oB-c
    I like that one better.

  23. #3323
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    Well done! Their hover and landing code base seems to be very solid as it worked first time for Starhopper and SN5. Even this early design legs did its job of preventing a huge fireball. The upper structure of the Raptor also was a little bit on fire, but those are details. The essence works; the rocket kept itself together.

    Does this design have any RCS on top or is it maintaining attitude solely by gimballing the Raptor?

    SN8 will look glorious!
    With sufficient thrust, water towers fly just fine.

  24. #3324
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    There are RCS thrusters top and bottom.

    Official SpaceX drone video. Looks like some kicked up debris, tape, etc caught fire on Raptor then burned out by the last engine shot.

    https://youtu.be/s1HA9LlFNM0

    Summary of Musk tweets, with some repitition

    @Elon Musk
    V1.1 legs will be ~60% longer. V2.0 legs will be much wider & taller — like Falcon, but capable of landing on unimproved surfaces & auto-leveling.
    |
    What's next, Elon? 20km hop?
    |
    We’ll do several short hops to smooth out launch process, then go high altitude with body flaps
    |
    when will you do a hop and a relight? i.e. - land and take off again?
    |
    Soon
    |
    Today marks the beginning of a new era, even though this is a small step. We are a giant leap closer to mars than we were yesterday, the future of interplanetary travel is upon us. MARS HERE WE COME!
    |
    Mars is looking real
    Last edited by docmordrid; Today at 09:25 AM.

  25. #3325
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    Official video from SpaceX, shots from the drone and inside SN-05:

    https://www.youtube.com/watch?v=s1HA9LlFNM0

    Looks like something was burning on the Raptor so doubtless more iteration to come there, but man that was impressive!

  26. #3326
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    Yes, this is a most interesting combination of ultra-high tech hardware and software, plus relatively low tech manufacturing/construction assembled in a few weeks. And the result does things that very few other rockets can do, certainly not at this scale. It suddenly doesn't seem too unreasonable for them to push out one Starship per week in the future, and manufacturing/repair on Mars also seems a lot more feasible with this way of construction. If of course one has the high-tech stuff in good shape at hand.
    With sufficient thrust, water towers fly just fine.

  27. #3327
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    PS an unknown pump has been attached to Starhopper. I wouldn't be surprised if they actually turned it into a water tower.
    With sufficient thrust, water towers fly just fine.

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