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  • Landing precision

    From JF Mezei@21:1/5 to All on Sun Jul 4 20:46:26 2021
    Noticed Falcon 9 doesn't actually land in the "X" but still within the
    cicles.

    (Considering they want Super Heavy to be caught by a cradle, thet would
    need greater presision().

    Has Elon provided any hints on what causes that imprecision in landing
    of Falcon 9?

    Is this an issue of GPS accuracy? Ship's inability to precisely station
    keep?


    I realize that it lands within needed specifications, but would have
    thought they would have fined tuned the software as a learning exercise
    to gain experience to do same with Super Heavy.

    --- SoupGate-Win32 v1.05
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  • From Sylvia Else@21:1/5 to JF Mezei on Mon Jul 5 11:31:33 2021
    On 05-Jul-21 10:46 am, JF Mezei wrote:
    Noticed Falcon 9 doesn't actually land in the "X" but still within the cicles.

    (Considering they want Super Heavy to be caught by a cradle, thet would
    need greater presision().

    Has Elon provided any hints on what causes that imprecision in landing
    of Falcon 9?

    Is this an issue of GPS accuracy? Ship's inability to precisely station
    keep?


    I realize that it lands within needed specifications, but would have
    thought they would have fined tuned the software as a learning exercise
    to gain experience to do same with Super Heavy.


    A video I watched recently commented that Falcon 9 cannot hover (the
    thrust from one engine is too high). So it's doing a suicide-burn, which
    limits its scope for fine-tuning the landing point.

    Sylvia.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From JF Mezei@21:1/5 to Sylvia Else on Mon Jul 5 03:36:47 2021
    On 2021-07-04 21:31, Sylvia Else wrote:

    A video I watched recently commented that Falcon 9 cannot hover (the
    thrust from one engine is too high). So it's doing a suicide-burn, which limits its scope for fine-tuning the landing point.

    With the number of landings they have done, I would have thought they
    would have adjusted the software to deal with the thrust. I would assume
    the grid fins have much moe to do with placing the vertical cylinder
    over the X than the engines that light up only at very end.

    or perhaps they have a "good enough" attitude and prefer to not make
    changes and rather live with some inpreision than risk a few crashes
    with tweaked software.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)