SpaceX Falcon 9 historic landing thread (1st landing attempt & most recent missions)

Discussion in 'The Watering Hole' started by georgegassaway, Dec 11, 2014.

Help Support The Rocketry Forum by donating:

  1. Jan 10, 2015 #121

    rc dude

    rc dude

    rc dude

    Well-Known Member

    Joined:
    Jan 15, 2012
    Messages:
    400
    Likes Received:
    1
    "Rocket made it to drone spaceport ship, but landed hard. Close, but no cigar this time. Bodes well for the future tho." Elon Musk Twitter

    Edit: next tweet "Ship itself is fine. Some of the support equipment on the deck will need to be replaced..."
     
    Last edited: Jan 10, 2015
  2. Jan 10, 2015 #122

    mpitfield

    mpitfield

    mpitfield

    Moderator Staff Member TRF Lifetime Supporter Global Mod

    Joined:
    Jul 7, 2013
    Messages:
    4,677
    Likes Received:
    318
    Gender:
    Male
    Location:
    Toronto, Ontario
    Anyone have any video on the booster reentry event?
     
  3. Jan 10, 2015 #123

    rc dude

    rc dude

    rc dude

    Well-Known Member

    Joined:
    Jan 15, 2012
    Messages:
    400
    Likes Received:
    1
    I don't think they released video of it yet :(

    edit: Elon Musk twitter: "Didn't get good landing/impact video. Pitch dark and foggy. Will piece it together from telemetry and ... actual pieces."
     
  4. Jan 10, 2015 #124

    ThirstyBarbarian

    ThirstyBarbarian

    ThirstyBarbarian

    Well-Known Member

    Joined:
    Feb 11, 2013
    Messages:
    7,868
    Likes Received:
    320
    It was great seeing the launch. I can't believe I woke up this early on a Saturday morning! I'm going back to sleep now. Hopefully, there will be video of the stage 1 fly back and landing when I wake up again...
     
  5. Jan 10, 2015 #125

    mpitfield

    mpitfield

    mpitfield

    Moderator Staff Member TRF Lifetime Supporter Global Mod

    Joined:
    Jul 7, 2013
    Messages:
    4,677
    Likes Received:
    318
    Gender:
    Male
    Location:
    Toronto, Ontario
    I get that they don't want the focuss to be on the booster recovery due to the high degree of probable failure but this is arguably a historical event so it's disappointing to see the obvious level of media blackout. I am pretty sure that barge would of had at least 4 cameras, one on each corner filming the event...there's a big elephant in the room Elon!
     
    Last edited: Jan 10, 2015
  6. Jan 10, 2015 #126

    jmattingly13

    jmattingly13

    jmattingly13

    Well-Known Member

    Joined:
    May 14, 2011
    Messages:
    437
    Likes Received:
    4
    Gender:
    Male
    Location:
    Somewhere in the West Texas desert
    Shoulda put a GoPro on the boat.
     
  7. Jan 10, 2015 #127

    billspad

    billspad

    billspad

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,625
    Likes Received:
    1
    In the press conference before the first scrub they said there wouldn't be any live video of the landing because the barge was over the horizon from land and the telemetry was going to be handled by support ships. It seems to me that was a problem that could be solved but I guess they chose not to. It was before sunrise so, unless they had some floodlights on the barge, the video is not going to be very good. However, there was some cool video from inside the fuel or oxidizer tank on the second stage.
     
  8. Jan 10, 2015 #128

    timbucktoo

    timbucktoo

    timbucktoo

    Well-Known Member Staff Member Global Mod

    Joined:
    Jun 13, 2014
    Messages:
    6,437
    Likes Received:
    667
    Gender:
    Male
    Location:
    Cocoa Beach
    I read that the landing was rather "hard", or as the article stated, "close but no cigar".
     
  9. Jan 10, 2015 #129

    Fontana

    Fontana

    Fontana

    Active Member

    Joined:
    Jan 6, 2015
    Messages:
    25
    Likes Received:
    0
    Although it would be great to a live stream from the spaceport drone, I feel SpaceX are right to not make this too public while still in the research stage.
    They are a commercial company with some very large and wealthy competitors. The reuse of the first stage would dramatically reduce to cost of commercial space deliveries, so why would they allow the public and their competitors see detailed research information.

    I'm sure they will release some video in the next few days.

    There was only a 50% chance of a successful landing and to have actually returned from space and hit the spaceport drone was a massive achievement in its own right. Even if it was a bit too hard :)

    They will try again on the next F9 launch which is scheduled for 29 Jan

    L
     
  10. Jan 10, 2015 #130

    FastCargo

    FastCargo

    FastCargo

    Well-Known Member

    Joined:
    Mar 6, 2011
    Messages:
    1,529
    Likes Received:
    0
    Got to catch it livestream not being anywhere near a TV...awesome! I love living in the 21st century.

    I am encouraged that they got it to the barge at least...honestly, better than I expected!

    FC
     
  11. Jan 10, 2015 #131

    mpitfield

    mpitfield

    mpitfield

    Moderator Staff Member TRF Lifetime Supporter Global Mod

    Joined:
    Jul 7, 2013
    Messages:
    4,677
    Likes Received:
    318
    Gender:
    Male
    Location:
    Toronto, Ontario
    That was interesting to watch live, to see it moving down then in the end the droplets floating around. Anyone know how do they deal with using liquid propellents in micro G?
     
  12. Jan 10, 2015 #132

    ThirstyBarbarian

    ThirstyBarbarian

    ThirstyBarbarian

    Well-Known Member

    Joined:
    Feb 11, 2013
    Messages:
    7,868
    Likes Received:
    320

    I agree. Not only are they a commercial company, they are a privately held company, not publicly traded. So there is even less reason to share the info. I'm actually impressed with how open they are.

    The service they are selling is delivering the payload successfully to ISS for NASA, a government agency funded by taxpayers. So it makes sense that they be as transparent as possible about that part of the flight. But after stage 1 has successfully completed its job for that contract and separated, landing and reuse of that stage is purely a SpaceX R&D project, not part of the NASA project.

    Im looking forward to seeing whatever they release.
     
  13. Jan 10, 2015 #133

    CarVac

    CarVac

    CarVac

    Well-Known Member

    Joined:
    Feb 13, 2012
    Messages:
    5,662
    Likes Received:
    3
    Musk said in his Reddit AMA that that number was completely made-up.
     
  14. Jan 10, 2015 #134

    marcusSRG

    marcusSRG

    marcusSRG

    Well-Known Member

    Joined:
    Sep 14, 2012
    Messages:
    888
    Likes Received:
    1
    I read 20-30% chance success in (IIRC) a Spaceflight Now article.

    I definitely see why they don't want to put the focus on the first stage landing when it's in these early research/development phases. But once they get it right it's going to be revolutionary!

    Congrats to Elon and the SpaceX team on another successful launch and another step towards reusable boosters! I know the ISS crew was patiently awaiting this delivery...apparently they are low on condiments and were waiting for some yellow mustard to spice up their food:). Article said they ran out a month ago!
     
  15. Jan 10, 2015 #135

    Fontana

    Fontana

    Fontana

    Active Member

    Joined:
    Jan 6, 2015
    Messages:
    25
    Likes Received:
    0
    I shouldn't have used a percentage!

    In the article I read, he said it was 50/50, in terms of might work/might not

    I wasn't trying to give accurate figures, just my point of view on the topic

    It's been a big step forward to this research and I'm sure SpaceX have gain loads of really useful data

    I predict the next try will be 27.874567% more successful than this attempt :)

    L
     
  16. Jan 10, 2015 #136

    tab28682

    tab28682

    tab28682

    Well-Known Member

    Joined:
    Jul 30, 2014
    Messages:
    1,467
    Likes Received:
    0
    Liquid fueled rockets that need to start in microgravity typically have small motors called ullage motors that gently burn and settle all the propellants to the bottom of the tanks before ignition.
     
  17. Jan 10, 2015 #137

    marcusSRG

    marcusSRG

    marcusSRG

    Well-Known Member

    Joined:
    Sep 14, 2012
    Messages:
    888
    Likes Received:
    1
    Well, Spaceflight Now's most recent article quotes the 50% success rate. Either way, it was still quite an accomplishment.
     
  18. Jan 10, 2015 #138

    Mushtang

    Mushtang

    Mushtang

    Premium Member TRF Supporter

    Joined:
    Nov 29, 2011
    Messages:
    2,816
    Likes Received:
    191
    Gender:
    Male
    Location:
    Buford, Ga
    I wonder why they don't utilize a set of large parachutes to slow it down prior to the third burn, that would leave more fuel for either maneuvering to the barge or for the first stage burn? The parachutes could be disconnected and allowed to fly away into the ocean before the third burn begins.

    I'm sure there's a reason, I just wonder what it is?
     
  19. Jan 10, 2015 #139

    Tanarin

    Tanarin

    Tanarin

    Well-Known Member

    Joined:
    May 27, 2014
    Messages:
    115
    Likes Received:
    2
  20. Jan 10, 2015 #140

    marcusSRG

    marcusSRG

    marcusSRG

    Well-Known Member

    Joined:
    Sep 14, 2012
    Messages:
    888
    Likes Received:
    1
    Except for missions that require the full propellant load of the Falcon 9, I don't think running out of propellant has been an issue. If parachutes are deployed then they would loose control of the decent as the wind is going to blow them whatever direction it is going. Plus you have to add in the cost of engineering and producing the parachutes...not to mention recovering them if they detach.
     
    Last edited: Jan 10, 2015
  21. Jan 10, 2015 #141

    marcusSRG

    marcusSRG

    marcusSRG

    Well-Known Member

    Joined:
    Sep 14, 2012
    Messages:
    888
    Likes Received:
    1
  22. Jan 10, 2015 #142

    rocketguy101

    rocketguy101

    rocketguy101

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    1,402
    Likes Received:
    25
    A sharp-eyed viewer on nasaspaceflight posted this...

    [video=youtube_share;BCoDwGTpYQs]http://youtu.be/BCoDwGTpYQs[/video]
     
  23. Jan 10, 2015 #143

    cecil

    cecil

    cecil

    Well-Known Member

    Joined:
    Aug 20, 2014
    Messages:
    152
    Likes Received:
    0
    Falcon 9 Launch Profile.JPG In case you missed this diagram, as I did.
     
  24. Jan 10, 2015 #144

    Fontana

    Fontana

    Fontana

    Active Member

    Joined:
    Jan 6, 2015
    Messages:
    25
    Likes Received:
    0
    Just found this

    It's the entire flight but just at the end is the first stage coming home

    L
     
  25. Jan 10, 2015 #145

    dward

    dward

    dward

    Well-Known Member

    Joined:
    Jan 24, 2013
    Messages:
    467
    Likes Received:
    0
    To quote the Matrix: "Nobody makes the jump the first time." And we know how that ends. Awesome.
     
  26. Jan 10, 2015 #146

    BLKKROW

    BLKKROW

    BLKKROW

    Well-Known Member

    Joined:
    Aug 19, 2011
    Messages:
    1,402
    Likes Received:
    10
    Elon Musk tweeted and said the hydraulic fluid in the grid fins depleted right before touchdown. He also mentioned the next flight would have 50% more fluid.
     
  27. Jan 10, 2015 #147

    Fontana

    Fontana

    Fontana

    Active Member

    Joined:
    Jan 6, 2015
    Messages:
    25
    Likes Received:
    0
    The latest report on SFN and the FB update stating the landing was "Botched" has wound me up (and others) so much I have asked Steven to edit it and tweeted Elon and SpaceX suggesting they also ask Steven to edit it

    Botched???? I don't think so!!!

    Grrrrrr!

    L
     
  28. Jan 10, 2015 #148

    stealth6

    stealth6

    stealth6

    insert witty tagline here

    Joined:
    May 1, 2011
    Messages:
    2,535
    Likes Received:
    84
    Disclaimer: this idea is coming from someone (that would be me) who has next to NO real understanding about the technology involved with this whole endeavor, and may appear to be silly, or even laughable, to someone with a clue. But with that said:

    Why not dispense with the whole platform/barge/soft landing thing and just drop it in the water - with huge floats that inflate/engage on impact to keep it from sinking? Then just come along with a ship and a crane, scoop the thing out of the water, towel it off and you're good to go for another flight? Seems a WHOLE lot easier to accomplish, cheaper, less risk of things going wrong, etc. Heck, I bet we could modify a Rouse-Tech CD3 system with a couple extra cartridges to do the job.

    OK, I'm obviously being just a bit tongue-in-cheek here, but is something along these lines at all possible? I would think that corrosion due to salt water immersion would be a big problem (and one that could not be overcome?), but I would also think that salt air and salt spray would then already be an issue with the current scheme. ANYTHING that sits outside on a ship/barge at sea gets a whole lot of salt on it without ever touching the water, but there are hundreds of years of marine experience/know-how to deal with this in both high and low tech ways. If Elon can build something that survives space flight, I'm sure he could figure out a way do deal with a bit of salt water.

    s6
     
  29. Jan 10, 2015 #149

    nute

    nute

    nute

    Well-Known Member

    Joined:
    Jun 30, 2013
    Messages:
    2,223
    Likes Received:
    1
    I feel the same way. CNN among others have deemed the landing a "failure" failure?! I think not! Perfect? No. But incredible? Yes, absolutely.

    Nate
     
  30. Jan 10, 2015 #150

    marcusSRG

    marcusSRG

    marcusSRG

    Well-Known Member

    Joined:
    Sep 14, 2012
    Messages:
    888
    Likes Received:
    1
    The media is going to report whatever gets the most attention, not necessarily what is the whole truth. Sad but true.
     

Share This Page

Group Builder