Falcon 9 / Dragon

Discussion in 'Science' started by MoorKhan, Dec 8, 2010.

  1. Quadbox

    Quadbox Member

    Joined:
    Jun 27, 2001
    Messages:
    6,205
    Location:
    Brisbane
    Yeah it'd be awesome if they rereleased 10231, or an updated version of it

    EDIT - To the wailing and knashing of teeth from those who have sealed originals lol :p
     
    Last edited: Jun 17, 2019
    BlueRaven likes this.
  2. Sphinx2000

    Sphinx2000 Member

    Joined:
    Sep 16, 2001
    Messages:
    7,506
    Location:
    Brisbane
    Mentioned this over in the >> LEGO THREAD <<
     
  3. aokman

    aokman Member

    Joined:
    Jul 12, 2001
    Messages:
    12,594
    Location:
    Melbourne
    Shoosh I havent opened my Saturn V because investment :lol:
     
    BlueRaven likes this.
  4. aokman

    aokman Member

    Joined:
    Jul 12, 2001
    Messages:
    12,594
    Location:
    Melbourne
    Still waiting on STP-2 static fire....

    [​IMG]
     
  5. elcarter1

    elcarter1 Member

    Joined:
    Feb 24, 2007
    Messages:
    590
    Location:
    Adelaide
    The proposed center core booster landing just got pushed out from 39km to the a new record attempt of 1240 km down range.

    Knew something didn't quite line up with the original FAA filings. She's going to be coming in at max vector this time with plenty of plasma.
     
    BlueRaven likes this.
  6. Sphinx2000

    Sphinx2000 Member

    Joined:
    Sep 16, 2001
    Messages:
    7,506
    Location:
    Brisbane
    If the routine test goes as planned, SpaceX’s third completed Falcon Heavy will be ready to lift off as early as 11:30 pm ET (03:30 UTC), June 24th. Apparently.

    Meanwhile, time for some Art:

     
    Last edited: Jun 19, 2019
  7. Quadbox

    Quadbox Member

    Joined:
    Jun 27, 2001
    Messages:
    6,205
    Location:
    Brisbane
    that's 03:30UTC on the 25th, by the way, for anyone doing the maths. so afternoon our time on the 25th
     
  8. Sphinx2000

    Sphinx2000 Member

    Joined:
    Sep 16, 2001
    Messages:
    7,506
    Location:
    Brisbane
    BlueRaven and aokman like this.
  9. Quadbox

    Quadbox Member

    Joined:
    Jun 27, 2001
    Messages:
    6,205
    Location:
    Brisbane
    A reminder this is 1:30pm this afternoon aest

    EDIT - pushed back to 4:30pm
     
    Last edited: Jun 25, 2019
    BlueRaven likes this.
  10. Quadbox

    Quadbox Member

    Joined:
    Jun 27, 2001
    Messages:
    6,205
    Location:
    Brisbane
    The infrared view of the booster coasting through the atmosphere was so cool. They really arent having much luck with recovery of core boosters so far though are they lol.
     
    BlueRaven likes this.
  11. Sphinx2000

    Sphinx2000 Member

    Joined:
    Sep 16, 2001
    Messages:
    7,506
    Location:
    Brisbane
    They landed the 2nd central core, this time the drone ship was really far down-rage (the furthest ever?) it was probably coming in the hottest they have ever attempted (as a limitations test?)
     
    Last edited: Jun 25, 2019
  12. BlueRaven

    BlueRaven Member

    Joined:
    Jul 29, 2010
    Messages:
    4,219
    Location:
    Sydney
    It was always going to be a tough ask for this mission though, given how high they had to boost the second stage to hit all four reference orbits.

    I am continually baffled at Elon's split personality disorder vis-a-vis how he handles communications/media for SpaceX and Tesla.
    He readily admitted that STP-2 was going to be the "hardest mission they have attempted so far".
    Yet he continues to over-promise and under-deliver on the planet saving LiPo firecrackers, both in financial and production terms.
    I can't help thinking it's mostly because everybody knows that Space Is Hard, even the investors.
    Which gives him much more freedom to be cautious or even negative in his pronouncements. It's like a built-in safety net that will stay valid for the lifespan of the company.

    Tesla has had multiple development/supply chain/cost issues re. batteries and software, which you'd think would be reason enough to slow the hype train down a bit.
    But for whatever reason, Musk seems absolutely unable to come clean on that score. Maybe it feels too close to admitting defeat, given the level of competition in the industry?

    In any case, it looks like SpaceX will be chalking up another win (with the public and USAF) with this STP-2 mission going well.
    And that's really got nothing to do with Elon, it's down to the hardworking people that he employs.
    Thumbs up for them. :thumbup:

    EDIT 18:42 AEST - MEO transfer burn completed, one circularisation burn to go before final payload deployment.
    Three second stage relights in a single mission is pretty awesome, they are playing KSP IRL. :lol:
     
    Last edited: Jun 25, 2019
  13. Sphinx2000

    Sphinx2000 Member

    Joined:
    Sep 16, 2001
    Messages:
    7,506
    Location:
    Brisbane
    BlueRaven likes this.
  14. Quadbox

    Quadbox Member

    Joined:
    Jun 27, 2001
    Messages:
    6,205
    Location:
    Brisbane
    he's also confirmed that they had a raptor have a RUD on the test stand, oxygen turbine stators catastrophically failed, which you'd imagine will delay a starhopper test a while. Given how rapidly they seem to be able to increment the designs on this stuff though, probably good for it to happen early.
     
    BlueRaven likes this.
  15. aokman

    aokman Member

    Joined:
    Jul 12, 2001
    Messages:
    12,594
    Location:
    Melbourne
    From what I heard, it was on target for landing but the flight computer aborted due to an unresponsive engine and went hard over full thrust to get away from the drone ship
     
    Sphinx2000 and BlueRaven like this.
  16. BlueRaven

    BlueRaven Member

    Joined:
    Jul 29, 2010
    Messages:
    4,219
    Location:
    Sydney
    So end result for the center core was similar to the first Heavy test flight, but this time it was due to damaged center engine TVC system rather than running out of TEB to relight all the engines.
    Still pretty cool that the FC was able to detect the failure early enough to steer hard over with whatever thrust vectoring and attitude control was still available, to avoid wiping out the recovery ship.

    Is that in reference to the ex-flight-test Raptor that went boom after they pulled it out of the ocean?
    Or is this a new and different RUD with a new test engine?
     
    Last edited: Jun 29, 2019
  17. aokman

    aokman Member

    Joined:
    Jul 12, 2001
    Messages:
    12,594
    Location:
    Melbourne
    End result was similar yes but I think they will get lots of useful data on how to mitigate this in the future. Especially now they have found the upper limit of re-entry heating that will cause the heat shielding to fail. By the looks of the video, the booster may have been able to land as it was on target but the computer was not getting the control authority it expected from the thrust vectoring and aborted. Unfortunately at the distance it was at, there was no time to spin up other engines. From the sounds of it, they knew it was a long shot anyway and expected a failure

    Raptor has never been in flight, I think you are referring to the Super Draco LAS engines. They were testing #5 raptor engine and it suffered a mechanical failure, to be expected with a new design and #6 is already on the way.

    Also if anyone else missed the news, they actually managed to catch half a fairing on the boat!
     
    BlueRaven and Sphinx2000 like this.
  18. aokman

    aokman Member

    Joined:
    Jul 12, 2001
    Messages:
    12,594
    Location:
    Melbourne
    Boom.....baby

     
    Sphinx2000, MUTMAN and RnR like this.
  19. elcarter1

    elcarter1 Member

    Joined:
    Feb 24, 2007
    Messages:
    590
    Location:
    Adelaide
    Mission would have been an assumed center core loss. The payload (multiple) exit velocity required it to be at it's max limits all the way.

    They went for a recovery attempt to see what the real max limit was. It was a perfect opportunity to gather data.

    They broke another record while they were at it. The most 2nd stage successive engine relight.
    I'm guilty just as the next to focus on the center core but that second stage had to hit so many milestones to get all 3 of those payloads to differing orbits.
     
    Last edited: Jun 30, 2019
    BlueRaven and MUTMAN like this.
  20. BlueRaven

    BlueRaven Member

    Joined:
    Jul 29, 2010
    Messages:
    4,219
    Location:
    Sydney
    Yeah sorry, was thinking of the recovered Crew Dragon abort engine "anomaly".

    It was a nice catch. :thumbup:

    And now they know the max limits they can properly adjust their risk analysis and costings for similar mission profiles. Well worth writing off one core for such commercially valuable data, to be able to put something of a hard upper limit on the chances of consistently recovering all three boosters.
    They're already doing better than anyone else in the heavy launch market in terms of cost and turnaround time via reusability. This will further add to their advantage.
    If ULA's partner companies didn't already have all those juicy government contracts, they'd be sweating hard... :lol:
     

Share This Page

Advertisement: