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Thread: SpaceX

  1. #2401
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    Cocoa Starship Mk-2 site post hurricane Dorian. No visible damage

    https://youtu.be/MMHqr3GF6U8

  2. #2402
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    Has anyone heard/saw when they will lift the first crewed flight to the ISS?

  3. #2403
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    The Crew Dragon In-Flight Abort (IFA) test is looking like early to mid Q4. The crewed Crew Dragon mission (DM-2) to ISS comes after the review of IFA. The DM-2 booster has already completed its tests at McGregor TX.

    Boeing still needs to do a Pad Abort Test, which SoaceX completed in 2015. Boeing does its Orbital Flight Test (OFT), an uncrewed test like Crew Dragon DM-1, about the same time as SpaceX's IFA.

    SpaceX chose to do an IFA to double-confirm the system works. Boeing won't.

    Crew Dragon PAT

    https://youtu.be/1_FXVjf46T8

    Crew Dragon PAT - Dragon's eye view

    https://youtu.be/wcHD9AmkxA0
    Last edited by docmordrid; 2019-Sep-05 at 10:06 PM.

  4. #2404
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    18 meter reusable HLLVS

    Pinch me. I'm dreaming

  5. #2405
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    Quote Originally Posted by publiusr View Post
    18 meter reusable HLLVS

    Pinch me. I'm dreaming
    So is Elon.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  6. #2406
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    He's not dreaming, he's anticipating reality.
    With sufficient thrust, water towers fly just fine.

  7. #2407
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    An 18 meter vehicle diameter would allow them to make the stack shorter while still multiplying cubic volume, and provide other efficiencies.

    StarLink update,

    https://spacenews.com/spacex-says-mo...-launch-needs/

    SpaceX says more Starlink orbits will speed service, reduce launch needs

    WASHINGTON SpaceX is asking federal regulators to allow it to spread out satellites in more rings around the Earth, saying the tweak to its orbital plans could bring coverage to the southern United States in time for next years hurricane season.*

    In a filing to the U.S. Federal Communications Commission, SpaceX said it wants to triple the number of orbital planes at 550 kilometers, the altitude where its lowest layer of Ku- and Ka-band Starlink satellites are to operate. [
    >
    [tripled = 72 planes]
    >
    "The proposed respacing would require fewer launches of satellites perhaps as few as half to initiate service to the entire contiguous United States," SpaceX told the FCC Aug. 30. "Globally, the modification would enable more rapid coverage of all longitudes to grow toward the Equator, as well as bolstering capacity over in areas of greater population density."

    Along with the contiguous 48 U.S. states, SpaceX said the new orbits would also speed service to Hawaii, Puerto Rico, the U.S. Virgin Islands, the American Samoa, and the Northern Mariana Islands.
    >
    In its filing, SpaceX said it "expects to conduct several more Starlink launches before the end of 2019."
    >
    >

  8. #2408
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    Quote Originally Posted by docmordrid View Post
    An 18 meter vehicle diameter would allow them to make the stack shorter while still multiplying cubic volume, and provide other efficiencies.
    The talk about flared bases and engines on leg mounts indicates that the 9 m Starship might be slightly taller than optimum for its engine technology, but I doubt they'd make it much if any shorter while building a double-radius version. For one thing, a different height would mean less shared infrastructure, both on and off Earth. It also means trading away a good chunk of the payload advantage.

  9. #2409
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    Falcon 9 has a fineness ratio of 19.13 (70m ÷ 3.66m) while Starship+Super Heavy is a thoroughly conventional 13.11 (118m ÷ 9m). A straight scaled 18m Starship+SH would be 236m tall, maintaining the 13.11 fineness ratio.

    Now add in in the height of a 30+m launch platform and actively cooled thrust diverter. They're not using a trench. 30m + 236m = at least 266m tall.

    I think stubbier 18m vehicle with a fineness of 8 (144m tall) could happen to eliminate the need for a 300m tall tower crane/service structure while still gaining the doubled diameter..

  10. #2410
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    Viv @flcnhvy
    Replying to @elonmusk @tarimnazmi
    After Mars, what’s next? Moons of Jupiter?
    |
    Elon Musk ✔ @elonmusk
    Ceres, Callisto, Ganymede & Titan
    4:53 AM - Sep 9, 2019

    https://twitter.com/elonmusk/status/1170983609492103168

  11. #2411
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    Starship Mk1: test flight 1

    Full size vehicle: 55+ meters tall, 9 meter fuselage + legs & fins

    FCC STA (temp. radio frequency allocations)

    FAA license pending

    Date: NET October 13, 2019 (ends April 13, 2020)
    Altitude: 22.5km (74,000ft)

    https://fcc.report/ELS/Space-Explora...631-EX-ST-2019

    This STA is necessary to authorize Starship suborbital test vehicle communications for SpaceX Mission 1569 from the Boca Chica launch pad, and the experimental recovery following the suborbital launch. Recovery is limited to 2 functions: (1) prelaunch checkout test of the TC uplink from the ground station at Boca Chica (less than five minutes in duration) and (2) experimental uplink testing from the ground station at Boca Chica during descent. Trajectory data will be provided directly to NTIA, USAF, and NASA. All downrange Earth stations are receive-only. Launch licensing authority is FAA Office of Commercial Space Transportation.
    >
    Operation Start Date: 10/13/2019
    Operation End Date: 04/13/2020
    >

  12. #2412
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    Boca Chica

    The first of 3 new Starship/Super Heavy ringwalls (build stands) is almost ready to pour, targeting a total of 5.

    This really is starting to look like a shipyard.

    https://twitt.com/BocachicaMaria1/st...22362539798528

  13. #2413
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    Quote Originally Posted by docmordrid View Post
    Boca Chica

    The first of 3 new Starship/Super Heavy ringwalls (build stands) is almost ready to pour, targeting a total of 5.

    This really is starting to look like a shipyard.

    https://twitt.com/BocachicaMaria1/st...22362539798528
    You missed the "er" off the end of Twitter for the URL
    https://twitter.com/BocachicaMaria1/...22362539798528

  14. #2414
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    Quote Originally Posted by Grashtel View Post
    You missed the "er" off the end of Twitter for the URL
    https://twitter.com/BocachicaMaria1/...22362539798528
    Weird...that was a copy/paste. Must be more spellcheck weirdness....

  15. #2415
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    SuperDraco test videos at the first link

    SpaceX ✔ @SpaceX
    Ahead of our in-flight abort test for @Commercial_Crew—which will demonstrate Crew Dragon's ability to safely carry astronauts away from the rocket in the unlikely event of an emergency—our team has completed over 700 tests of the spacecraft's SuperDraco engines
    |
    Fired together at full throttle, Crew Dragon's eight SuperDracos can move the spacecraft 0.5 miles—the length of over 7 American football fields lined up end to end—in 7.5 seconds, reaching a peak velocity of 436 mph
    2:27 PM - Sep 12, 2019

    https://twitter.com/SpaceX/status/1172215123777216512

    https://twitter.com/SpaceX/status/1172215126344122368


    Jason @jaysolo613
    Replying to @SpaceX @Commercial_Crew
    Is there a timeframe for the next test?
    |
    Space Coast Life @SpaceCoast_Life
    Net November 11 2019
    3:57 PM - Sep 12, 2019 · Merritt Island, FL

    https://twitter.com/SpaceCoast_Life/...37942124924929

  16. #2416
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    I really hate that so many people think "football fields" is the only unit of measure known to Americans. Also, .5 mile is 2640 feet, which when divided by 300 is 8.8 football fields. Unless you're counting end zones. It's not even an unambiguous unit!
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  17. #2417
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    Of course we don't think that! We know very well you also have school busses and the state of Texas as officially recognized units of measure. In Europe, we have soccer fields. Which we don't use as a unit, as their size isn't strictly defined. Which is kind of surprising for the "biggest sport on earth". Anyway, SpaceX.
    With sufficient thrust, water towers fly just fine.

  18. #2418
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    Quote Originally Posted by Nicolas View Post
    Of course we don't think that! We know very well you also have school busses and the state of Texas as officially recognized units of measure. In Europe, we have soccer fields. Which we don't use as a unit, as their size isn't strictly defined. Which is kind of surprising for the "biggest sport on earth". Anyway, SpaceX.
    Space available at the time of the field being laid out in most of them those I have refereed, in the USA.

  19. #2419
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    Boca Chica

    The windbreak is getting covered.

    3 more "ringwalls" (build platforms) will soon be built.

    They're mounted what's likely to be the last propulsion module ring + upper LOX dome assembly, and a truck has arrived with a huge triangular object(s). Must be a fin/leg(s).

    Screencaps from the LabPadre YouTube stream.

    BC Sept 14 10_00 hrs.jpg

    BC Sept 14 10_32 hrs.jpg

    BC Sept 14 10_45 hrs.jpg
    Last edited by docmordrid; 2019-Sep-14 at 03:36 PM.

  20. #2420
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    Boca Chica

    Austin Barnard🚀 @austinbarnard45
    SpaceX crews are hard at work today, with the completion of the StarShip main body stack. In the photos down below, you can see crew members inspecting the welds, porthole, and the final bulkhead. Congratulations to SpaceX and Elon musk, to another step closer to Mars.

    IMG_20190915_125930.jpg

    IMG_20190915_130055.jpg

    IMG_20190915_130120.jpg

    https://twitter.com/austinbarnard45/...63152339898369

  21. #2421
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    The uncorrected image could make for a neat painting, or print-on-canvas.

    Elon Musk ✓ @elonmusk
    Droid junkyard. Tatooine.

    IMG_20190917_041247.jpg

    Corrected
    IMG_20190917_041247_brighter_colorcorrected.jpg

    |
    Everyday Astronaut @Erdayastronaut
    Are those the hinge mounts for the body flaps we see on the left and right in front? 🤔
    |
    Elon Musk ✔ @elonmusk
    Replying to @Erdayastronaut
    Yes
    |
    Pranay Pathole @PPathole
    Replying to @Erdayastronaut @elonmusk
    What is the piece of equipment right in the front of the picture. It looks like it will be welded to the big cylinder and the leg/aero surface will be connected to it.
    |
    Elon Musk ✔ @elonmusk
    Landing leg frame

    https://twitter.com/elonmusk/status/1173872132880662528

  22. #2422
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    From Ars Technica, who is now at Boca Chica...

    Eric Berger @SciGuySpace
    T-8 days until the Starship event in South Texas. This is a monstrous space ship - hard to believe it is just a rocket's second stage. But it will fly. And, my Lone Star friends, it was built right here, beneath the blue skies, hard by the Rio Grande.
    9:04 PM · Sep 20, 2019·

    https://twitter.com/SciGuySpace/stat...14110570700800

  23. #2423
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    We have a FIN!

    LabPadre @LabPadre
    Looks like a wing is being installed on Orby this morning. #SpaceX #BocaChica #Texas @spaceXcentric @BocachicaMaria1 https://t.co/PmCDtIuNR5

    IMG_20190921_103901.jpg

    https://twitter.com/LabPadre/status/1175402374980079617

  24. #2424
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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

  25. #2425
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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

  26. #2426
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    Is there any sort of date established for a Starship hop? Seems like things are happening quickly.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  27. #2427
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    Quote Originally Posted by Trebuchet View Post
    Is there any sort of date established for a Starship hop? Seems like things are happening quickly.
    NET Octobe/early Novemberfor a 22.5km/74,000 foot "hop". They're busy installing some HUGE propellant tanks which have been stored near the tracking dishes, pad upgrades, and the Starship Mk1 launch stand. Similar to the work at 39A in Florida, but not so much.

    WE HAVE 2 FINS!!

    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

    IMG_20190922_124505.jpg

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

    https://twitter.com/elonmusk/status/1175818733648003072
    Last edited by docmordrid; 2019-Sep-22 at 08:16 PM.

  28. #2428
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    Q: will it be ready 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

    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.

  29. #2429
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    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.

  30. #2430
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    Quote Originally Posted by docmordrid View Post
    @elonmusk
    Approximately correct. We also fire the ACS thrusters to rotate the vehicle & ignite Raptors at full gimbal angle to complete the turn.
    Can you say "control authority"?
    Starship: "I'm turning around. Now."

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