[AR] Re: Congrats SpaceX

  • From: Henry Vanderbilt <hvanderbilt@xxxxxxxxxxxxxx>
  • To: arocket@xxxxxxxxxxxxx
  • Date: Tue, 6 Feb 2018 16:51:39 -0700

I looked at the vid again, and y'all are right. Same descending-strapon feed on both left and right. Fractional-second delay between them, but by the time they're close to the ground it's obviously the same POV on both.

Couple of clues earlier also, in identical lens-splats on both sides, once you start looking for it.

Still a minor oops in a major success of a first flight, of course.

Henry

On 2/6/2018 3:39 PM, Paul Mueller wrote:

Looked like the same video stream to me, all firings at the exact same times, identical images of the cape, landing pads, etc. You could see the other booster's landing burn in the exact same spot on both videos.

On Tue, Feb 6, 2018 at 3:25 PM, Carlo Vaccari <airplaniac2002@xxxxxxxxx <mailto:airplaniac2002@xxxxxxxxx>> wrote:

    I'm pretty sure they accidentally used the exact same footage for
    both boosters, with a slight time lag between them.

    On Feb 6, 2018 4:57 PM, "John Stoffel" <john@xxxxxxxxxxx
    <mailto:john@xxxxxxxxxxx>> wrote:

         >>>>> "Henry" == Henry Vanderbilt <hvanderbilt@xxxxxxxxxxxxxx
        <mailto:hvanderbilt@xxxxxxxxxxxxxx>> writes:

        Henry> Your phrasing is ambiguous - have you seen word on the center
        Henry> booster barge landing yet?  All I can find is, result not
        known
        Henry> yet.

        Nope, no word yet that I've been able to find.  I assume the worst,
        even though the sea state looked really calm out there.  But who
        knows?  Surprised the Elon hasn't tweeted anything, which implies to
        me that there was a RUD upon landing and they might not have a barge
        any more...

        Henry> That aside - woo-HOO!  An indication of the precision in the
        Henry> booster recoveries was that thruster firings etc on the two
        Henry> boosters were pretty much simultaneous throughout.  (One did
        Henry> touch down a half-second or so after the other, mind -
        but I'm
        Henry> not complaining.)

        Looking at the video as they came down I was worried they were
        aiming
        for the same pad!  But I suspect they set them up so they were
        180 deg
        out of phase with each other to limit the chances of collision.

        Henry> Seriously, an historic day.  64 mt to LEO, with I guesstimate
        Henry> well over 90% by value (27 of 28 engines) of the overall
        Henry> booster recovereable and reusable.  A major step forward
        on the
        Henry> path.

        I haven't been this pumped since the Curiosity landing.

        Henry> On 2/6/2018 2:17 PM, John Stoffel wrote:
         >>
         >> Wow...just wow.  Watching the liftoff, max-q, separation,
        side booster
>> landings, second stage ignition, etc.  All just amazing. Even if they
         >> lost the core stage on landing... wow.
         >>
         >> Such an amazingly successful launch, congrats!
         >>
         >>




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