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  • By Leah Crane

    SpaceX just did a double-header. Two of the firm’s Falcon 9 rockets were launched within 49 hours of each other, one from NASA’s Kennedy Space Center in Florida and one from the Vandenberg Air For […]

    • Thanks for that BBC link Alan. But it contradicts the article above

      This second mission, on a brand new Falcon, occurred on the West
      Coast, from the Vandenberg Air Force Base.

      I haven’t seen any other reports of both Falcon’s being reused. I wonder if New Scientist stuffed up.

      Perhaps SpaceX should start naming the Falcon’s so we know which one is which.

    • mmurray #2
      Jun 27, 2017 at 8:04 am

      Perhaps SpaceX should start naming the Falcon’s so we know which one is which.

      The Falcon first stage rockets can only land for re-use if they have sufficient fuel left to do so.
      On missions to higher orbits or with heavier pay-loads, they don’t.
      One of these seems to have made “a heavy landing”, so may have to be written off or cannibalised for parts!

    • The Falcon first stage rockets can only land for re-use if they have sufficient fuel left to do so.
      On missions to higher orbits or with heavier pay-loads, they don’t.

      I thought they were landing the higher orbits at sea on the floating platform due to the excessive fuel use in turning around for the landing on land. Or is the plan for future higher orbit launches?

    • Hi Alan,

      I saw a video sometime I can’t remember when (I’ll have a look when I get a moment today), where they were explaining that the longer launches which had greater speed to wash off and therefore needed greater fuel burn to get to the site on land would necessitate some launches being landed at sea to maintain sufficient fuel to land. I assumed that the higher orbits might be the same. I’ll have a better look myself and get back to you.

    • Hi Alan,

      Had a bit of a look found this on Tech Crunch,

      here

      would seem both are factors. Will try to find the original video I saw. Cheers