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SpaceX F9 - Starlink 4 - SLC-40

Discussion in 'SpaceX' started by Grendal, Jan 30, 2020.

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  1. Grendal

    Grendal SpaceX Moderator

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    #1 Grendal, Jan 30, 2020
    Last edited: Feb 16, 2020
    Launch Date: February 17
    Launch Window: 10:04 AM EST, 7:04 AM PST, 1504 UTC
    Launch site: SLC-40
    Core Booster Recovery: ASDS
    Booster: B1056.4
    Fairings: Maybe reused - nothing from SpaceX yet.
    Mass: 60 satellites at 260 kg each - 15,600 kg (34,500 lbs)
    Orbit: LEO

    A SpaceX Falcon 9 rocket is expected to launch the fifth batch of approximately 60 satellites for SpaceX’s Starlink broadband network, a mission designated Starlink 4.
     
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  2. Grendal

    Grendal SpaceX Moderator

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    First post updated. The booster is likely B1056.4 according to inside reporters.

    This booster was first launched with CRS-17, then CRS 18, and then the heavy duty JCSAT 18.

    This will be the quickest turnaround of a previously flown booster.
     
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  3. Pricee2

    Pricee2 Member

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    Does anyone know if the F9 is fully fueled for the static fire?
     
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  4. Grendal

    Grendal SpaceX Moderator

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    Yes. It is a full sequence static test. They just fire the engines for a few seconds while the rocket is held down.
     
  5. Pricee2

    Pricee2 Member

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    @ Grendal, thanks. I suspected so but was unable to verify it.
     
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  6. Grendal

    Grendal SpaceX Moderator

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    Weather is 60% go for Saturday and 90% go for Sunday.
    [​IMG]
     
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  7. Grendal

    Grendal SpaceX Moderator

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    Pushed out to the better weather on Sunday.

    SpaceX on Twitter
     
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  8. JohnnyEnglish

    JohnnyEnglish Member

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    Just want to say how much I appreciate the work you do to keep the info on all of the SpaceX launches updated.
     
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  9. Grendal

    Grendal SpaceX Moderator

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    My pleasure. Thank you. Going to be a busy year for SpaceX!
     
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  10. Electroman

    Electroman Supporting Member

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    +100
     
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  11. Grendal

    Grendal SpaceX Moderator

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    Second stage valve issue causing another delay. Hopefully one day but...
    SpaceX on Twitter
     
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  12. e-FTW

    e-FTW New electron smell

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    x100
     
  13. ecarfan

    ecarfan Well-Known Member

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    The SpaceXNow app still shows this launch as occurring on Feb 16 at 7:28AM PST but apparently that is incorrect.
     
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  14. Grendal

    Grendal SpaceX Moderator

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  15. Electroman

    Electroman Supporting Member

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    First stage did not land successfully..
     
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  16. Nikxice

    Nikxice Active Member

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    Ouch. Getting to landing #50 a bit elusive. Looked like significant ocean spray was kicked up just to the right of the video feed. Apparently a soft landing occurred next to the drone ship, perhaps still in one piece. Let's hope they can capture one or both of the fairings. Around the T+7:00 min. mark there was a call out for fairing vessel aquisition of signal (AOS).
     
  17. bmah

    bmah Moderator, Model S/X, California Forums

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    Space is hard. :(

    They commented that the first stage soft-landed in the water next to the recovery vessel. The landing video feed from OCISLY seemed to show some mist or smoke from the right side of the frame, and then water droplets on the camera lens.

    Also on the Webcast they talked a couple times about the different (elliptical) orbit and shorter time to satellite deployment. I didn't get the reasoning? (If they gave any.)

    Bruce.
     
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  18. SMAlset

    SMAlset Well-Known Member

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    That was a quick deployment and unfortunate near-landing of Stage 1 near the drone ship. Reminder to viewers how difficult achieving a perfect launch is. We’ve been so lucky to see so many perfect ones. I knew when we started to see the fumes to the right of the drone ship and the water droplets on the camera lens that was going to be it for today. Glad deployment went well.

    105D9881-5975-48F7-BBB0-76F490B55A1D.png

    close but no cigar this time around
     
  19. ecarfan

    ecarfan Well-Known Member

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    Wait a minute...I watched the livestream and saw the booster land on target. What are you guys talking about? The webcast host stated the booster landing was successful.

    Am I in the wrong thread? Can’t be based on the date/time of your posts.

    After the booster anding the host said the sat deploy would be at about 45 minutes post launch. I stepped away for about 15 minutes to do other stuff, now watching the webcast showing the usual animation. It’s T+35 minutes. But the SpaceXNow app states the sats were deployed already.
     
  20. Nikxice

    Nikxice Active Member

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    Despite good weather, it was a miss, maybe a GPS coordinate error? Heck, SpaceX's cup is still half-full. They've successfully landed their boosters 49 times more that anyone else launching orbital missions!
     

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