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Thread: SpaceX

  1. #2071
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    Chris Bergin @NASASpaceFlight
    Aerospace Engineering Degree Course - Unit 5: Grinding and Polishing Starships. 😅

    📸@BocaChicaGal

    https://t.co/r8kfKik3vQ
    https://t.co/kQLlXoZXdf

    IMG_20190615_144111.jpg

    https://twitter.com/NASASpaceflight/...42373104979968

  2. #2072
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    Video simulation of the upcoming Space Center Houston Falcon 9 display

    http://spacecenter.org

    https://youtu.be/JtP1mooW6B0
    Last edited by docmordrid; 2019-Jun-16 at 03:55 AM.

  3. #2073
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    Elon Musk ✔ @elonmusk
    10 years ago, SpaceX server room was named Skynet as a joke. Fate irony.
    |
    Viv @flcnhvy
    Replying to @elonmusk and 3 others
    Any update on the Starship presentation we’re all super excited for, I assume it won’t happen on June 20?
    |
    Elon Musk ✔ @elonmusk
    Might get pushed to next month. Starhopper flight first. Waiting on engine repair.
    8:22 PM - Jun 16, 2019

    https://twitter.com/elonmusk/status/1140414413322670080

  4. #2074
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    New ring added on the second Boca Chica jig. No one knows what the black is about.

    Edit: the black is protective plastic film.

    Mary @BocaChicaGal
    A little stacking going on this morning at the Starship Assembly in Boca Chica. 🚀
    @NASASpaceflight

    IMG_20190619_151447.jpg

    https://t.co/n4X2M7pJQc
    https://t.co/8bp5uhYVyV

    https://twitter.com/BocaChicaGal/sta...99604669403138

  5. #2075
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    Is it just me, or does this one look more on par with the apparent Cocoa quality? Looks a lot cleaner than the first one. Of course, this is the "easy" cylindrical part and not yet the cone.

  6. #2076
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    The whole idea was to have each site teach the other. Cocoa was a longtime steel fab company & workers who have worked NASA projects. Those methods were likely transferred to Boca Chica, and the new building is similar in size to Cocoa's.

  7. #2077
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    @SpaceX
    Static fire of Falcon Heavy completetargeting June 24 launch of STP-2 from Launch Complex 39A in Florida → https://t.co/QjQ85Pfc1O

    https://twitter.com/SpaceX/status/1141569552330870784

  8. #2078
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    Quote Originally Posted by docmordrid View Post
    @SpaceX
    Static fire of Falcon Heavy complete targeting June 24 launch of STP-2 from Launch Complex 39A in Florida → https://t.co/QjQ85Pfc1O

    https://twitter.com/SpaceX/status/1141569552330870784
    I don't find anything concerning this launch. Do you know the payload being launched?

  9. #2079
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    STP-2 counts for US National Security launch qualification

    FH STP-2's upper stage will,

    do 4 MerlinVac burns
    deploy ≥24 payloads to 3 different orbits
    perform a propulsive passivation maneuver
    over a period of 6+ hours

    Date: June 24
    Time: 2330 EDT (0330 UTC June 25)
    Pad: LC-39A
    Recovery: LZ-1, LZ-2, ASDS Of Course I Still Love You (over 1200km downrange, furthest ever to get a big center core boost)

    STP-2 is a ride-share mission for the USAF Space and Missile Systems Center (SMC) with payloads from DoD, NOAA, NASA, The Planetary Society and universities. Notables,

    LightSail-2: Planetary Society's LightSail propulsion demonstrator

    GPIM: Green Propellant Infusion Mission. Looking to replace hypergolic propellants, this will test the AF-M315E monopropellant (hydroxylammonium nitrate, aka HAN).

    DSAC: Deep Space Atomic Clock
    https://www.jpl.nasa.gov/news/news.php?feature=7415

    DSX: a multi-experiment package,

    * The Wave Particle Interaction Experiment (WPIx) will resolve critical feasibility issues for very-low frequency (VLF) wave-particle interaction.

    * The Space Weather Experiments (SWx) will measure and map the distributions of energetic protons, electrons and low-energy plasma in the inner magnetosphere to improve environment models for spacecraft design and operations.

    * The Space Environment Effects (SFx) will determine the MEO environmental effects on common electrical components, circuits and materials. This includes NASAs Space Environment Testbeds (SET) experiments. SET will characterize how radiation driven by the Sun impacts hardware over time, paving the way for mitigating the effects of solar activity on spacecraft design and operations.

    COSMIC-2: a constellation of 6 meteorology smallsats for NOAA and Taiwan. AKA FORMOSAT-7.
    Last edited by docmordrid; 2019-Jun-20 at 04:06 PM.

  10. #2080
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    Maybe the folks in DoD will focus on large payloads again.

    JPL was always good at folding things up a dozen different ways, shaving this off, shaving that.

    Any talk of SpaceX maybe designing large payloads--maybe looking at the old Orbital antenna farm concepts?

  11. #2081
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    Quote Originally Posted by publiusr View Post
    >
    Any talk of SpaceX maybe designing large payloads--maybe looking at the old Orbital antenna farm concepts?
    Starship IS a big payload , and it's being looked at to launch the Luvoir space telescope

    https://twitter.com/NASAGoddard/stat...10431969239040

    SpaceX tried to acquire a Class C fairing (stretched 5.4m) from RUAG akin to the Atlas/Delta units but ULA complained it was their intellectual property. This for a launch which wouldn't fly until about 2025-ish.

    As a result, SpaceX offered Falcons for the regular fairing launches and Starship for the 2025 launch. The USAF declined using false equivalences and criteria not in the EELV 2 RFP, resulting in their not being funded so SpaceX is suing. Most analysts believe they have a good case given the misdeeds by Air Force staff.

    Meanwhile, in Congress, the House Armed Services Committee got riled up and put a $500m fund in for entrants who weren't fully funded (SpaceX, Blue Origin.)

    And the war continues.
    Last edited by docmordrid; 2019-Jun-22 at 10:10 PM.

  12. #2082
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    Elevated shots of Starship Mk-2 at Cocoa, Florida.

    Coming along nicely...

    https://twitter.com/austinbarnard45/...57966702469120
    Last edited by docmordrid; 2019-Jun-23 at 04:33 AM.

  13. #2083
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    That Cocoa shine though.

  14. #2084
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    Just starting to polish Boca's Starship Mk-1.

    Also, they're accelerating....

    Elon Musk ✓ @elonmusk
    Accelerating Starship development to build the Martian Technocracy
    |
    Everyday Astronaut @Erdayastronaut
    It feels like youre already at maximum development pace! Honest question, what more can be done to accelerate the pace of development?
    |
    Elon Musk ✓ @elonmusk
    A lot.

    https://twitter.com/elonmusk/status/1142890265369202688

    https://twitter.com/elonmusk/status/1142890866471665664

  15. #2085
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    CBS News description of the Falcon Heavy launch tonight and the multiple missions.

    SpaceX readied a triple-core Falcon Heavy rocket for the booster's first nighttime launch Monday in what promises to be a spectacular climb to space. The launch kicks off a complex $750 million mission to deploy 24 small science and technology testbed satellites into multiple orbits for the Pentagon, NASA and a variety of other agencies.

    In so doing, the third flight of the Falcon Heavy, along with the attempted recovery of all three first stage core boosters -- two back at Cape Canaveral and one on an off-shore droneship -- will help certify the powerful rocket for launching expensive high-priority national security payloads, a major milestone for SpaceX.

    Managed by the Air Force Space and Missile Systems Center, the Space Test Program 2 -- STP-2 -- launch from historic pad 39A at the Kennedy Space Center is targeted for 11:30 p.m. EDT Monday. Forecasters predicted an 80 percent chance of acceptable weather.

    ...

    "We're putting 24 research and development satellites into three separate orbits, with a first-ever four engine start and burn of the second stage."
    At night the stars put on a show for free (Carole King)

    All moderation in purple - The rules

  16. #2086
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    Best of luck to all involved!

    When F9H was first launched it had a bit of a "rocket without a mission" noise surrounding it, but meanwhile it has found 2 missions already so it seems that there is a healthy market for it.

  17. #2087
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    There are more FH missions manifested.

    Today Musk and a Raptor engine showed up at the Cocoa, Florida Starship Mk-2 site.

    https://www.facebook.com/groups/spac...7643644151318/

    Also, the FAA test permit for Boca Chica has been issued. The initial permit limits them to about 2,270 meters from the pad and 25 meters above ground, but that can be upgraded as flight envelopes expand.

  18. #2088
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    Elon Musk ✓ @elonmusk
    Targeting T-0 of 2:30 a.m. EDT for Falcon Heavy launch of STP-2; team completed additional ground system checkouts. Vehicle and payload continue to look good

    https://youtu.be/WxH4CAlhtiQ

  19. #2089
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    Quote Originally Posted by docmordrid View Post
    Elon Musk ✓ @elonmusk
    Targeting T-0 of 2:30 a.m. EDT for Falcon Heavy launch of STP-2; team completed additional ground system checkouts. Vehicle and payload continue to look good

    https://youtu.be/WxH4CAlhtiQ
    Zzzzzzzzzzzzz.

  20. #2090
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    Sounds like a ground equipment issue.

    With these 3 orbits they're really putting the upper stage through its paces,

    300 x 860km x 28.5
    720 x 720km x 24
    6,000 x 12,000km x 43

  21. #2091
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    Grrreat success! Core missed the barge, but that was half-expected. Mr Steven's significant other has even caught a fairing half!

    The center core appeared to have good (low) vertical velocity but either couldn't zero out its horizontal velocity, or was so far off course late in the descend that it couldn't reach target in a controlled way. In any case, the core was seen rapidly flying lengthwise low overhead of the droneship, coming very close to crashing onto it. So at least the good news is that the droneship is undamaged.
    Last edited by Nicolas; 2019-Jun-25 at 11:23 AM.

  22. #2092
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    Yup, it went about as well as expected.

    Need to get more info about the VIP event at Cocoa yesterday. Musk and others were there, and a Raptor engine went along for the ride. Likely some NASA and DoD types from the Cape.

  23. #2093
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    So, 0 for 3 on center cores. Or maybe 0.5 for three! Cool anyhow.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  24. #2094
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    At night the stars put on a show for free (Carole King)

    All moderation in purple - The rules

  25. #2095
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    How long does it take the engines to cool while dropping through the atmosphere? I noticed this morning while watching the replay the engines were glowing brightly while the side booster where reentering, given that one to three engines were started to aid landing operations?

  26. #2096
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    Yup, they're hot. They're still hot after landing, which is why the giant Octagrabber robot secures the booster to the deck instead of people. It's 4 arms reach up and grapple the launch clamp fixtures, keeping the booster in place using its weight.

    DzdTE5CWwAMvodg_Teslarati.jpg

    The boosters, or an F9 on a lower energy trajectory, starts only the center engine higher up; aka the "Hover-Slam" landing. Power is cut just as it touches the ship at zero velocity. Quite a dance.

    On hot trajectories to ASDS, F9 or the FH center core will light 3 engines at the last second to reduce gravity losses - a so-called "Super-Slam" landing.
    Last edited by docmordrid; 2019-Jun-26 at 12:12 AM.

  27. #2097
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    The STP-2 center core loss was a failure of thrust vector control (TVC)

    Pauline �� @justpaulinelol
    Replying to @elonmusk and 2 others
    Elon do you know what went wrong?
    |
    Elon Musk ✔ @elonmusk
    High entry force & heat breached engine bay & center engine TVC failed
    |
    Everyday Astronaut @Erdayastronaut
    Replying to @elonmusk and 2 others
    And did the computer know that and know to divert?!?!
    |
    Elon Musk ✔ @elonmusk
    Most likely. It is programmed to do so.
    9:22 PM - Jun 25, 2019

    https://twitter.com/elonmusk/status/1143690145255841797
    Last edited by docmordrid; 2019-Jun-26 at 05:05 AM.

  28. #2098
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    Well that certainly was a very, very close divert manoeuvre if it was one.

    Does the octagrabber attach itself to the deck in any way, or is the mass of the octagrabber enough to stabilize the core on deck?

  29. #2099
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    Just the mass and slight leg tension from being grappled is enough.
    Last edited by docmordrid; 2019-Jun-26 at 05:14 PM.

  30. #2100
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    Plan image at the link. Looks like a propulsion shop and test area are going in (left side)

    Emre Kelly ✓ @emrekelly (Florida Today)
    On the #SpaceX Starship site in Cocoa: They're about to make some changes out there, according to permitting documents filed yesterday. Don't worry, they don't mention SpaceX anywhere.

    https://twitter.com/emrekelly/status...48507818156032

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