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Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

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  • Originally posted by Kepler View Post
    Say hello to my little friend.
    And orange black hole? I await the comments from my friends on the left.
    CCT '77 & '78
    4 kids
    5 grandsons (BCA 7/09, CJA 5/14, JDL 8/14, JFL 6/16, PJL 7/18)
    1 granddaughter (EML 4/18)

    ”Any society that would give up a little liberty to gain a little security will deserve neither and lose both.”
    - Benjamin Franklin

    Banned from the St. Lawrence University Facebook page - March 2016 (But I got better).

    I want to live forever. So far, so good.

    Comment


    • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

      Originally posted by Kepler View Post
      And yet... you clicked.

      My milkshake brings all the boys to the yard.
      So now you're saying that you're a Catholic priest?
      "The party told you to reject the evidence of your eyes and ears. It was their final, most essential command." George Orwell, 1984

      "One does not simply walk into Mordor. Its Black Gates are guarded by more than just Orcs. There is evil there that does not sleep, and the Great Eye is ever watchful. It is a barren wasteland, riddled with fire and ash and dust, the very air you breathe is a poisonous fume." Boromir

      "Good news! We have a delivery." Professor Farnsworth

      Comment


      • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

        Originally posted by St. Clown View Post
        So now you're saying that you're a Catholic priest?
        No. Mine come willingly.
        Cornell University
        National Champion 1967, 1970
        ECAC Champion 1967, 1968, 1969, 1970, 1973, 1980, 1986, 1996, 1997, 2003, 2005, 2010
        Ivy League Champion 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1977, 1978, 1983, 1984, 1985, 1996, 1997, 2002, 2003, 2004, 2005, 2012, 2014, 2018, 2019, 2020

        Comment


        • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

          Originally posted by Kepler View Post
          No. Mine come willingly.
          The Pied Piper of Peenys.

          Comment


          • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

            Originally posted by burd View Post
            The Pied Piper of Peenys.
            The cock whisperer.
            Cornell University
            National Champion 1967, 1970
            ECAC Champion 1967, 1968, 1969, 1970, 1973, 1980, 1986, 1996, 1997, 2003, 2005, 2010
            Ivy League Champion 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1977, 1978, 1983, 1984, 1985, 1996, 1997, 2002, 2003, 2004, 2005, 2012, 2014, 2018, 2019, 2020

            Comment


            • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

              SpaceX Falcon Heavy now scheduled for 8:00 pm. Upper winds may push that back
              -------

              @SpaceX: New T-0 of 8:32 p.m. EDT due to upper-level winds. Vehicle and payload still look good for launch.
              Last edited by joecct; 04-10-2019, 05:45 PM.
              CCT '77 & '78
              4 kids
              5 grandsons (BCA 7/09, CJA 5/14, JDL 8/14, JFL 6/16, PJL 7/18)
              1 granddaughter (EML 4/18)

              ”Any society that would give up a little liberty to gain a little security will deserve neither and lose both.”
              - Benjamin Franklin

              Banned from the St. Lawrence University Facebook page - March 2016 (But I got better).

              I want to live forever. So far, so good.

              Comment


              • Originally posted by joecct View Post
                SpaceX Falcon Heavy now scheduled for 8:00 pm. Upper winds may push that back
                -------

                @SpaceX: New T-0 of 8:32 p.m. EDT due to upper-level winds. Vehicle and payload still look good for launch.
                That's the very end of the launch window. I'd be surprised if it actually goes.

                Comment


                • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

                  Just checked- looks like the launch got scrubbed until tomorrow at 7:35 EST.

                  Comment


                  • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

                    Originally posted by Kepler View Post
                    Say hello to my little friend.
                    No word yet on if it causes young girls to barbecue and consume their Barbie dolls.

                    Comment


                    • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

                      Elon goes 3 for 3 on booster recovery this pm.
                      CCT '77 & '78
                      4 kids
                      5 grandsons (BCA 7/09, CJA 5/14, JDL 8/14, JFL 6/16, PJL 7/18)
                      1 granddaughter (EML 4/18)

                      ”Any society that would give up a little liberty to gain a little security will deserve neither and lose both.”
                      - Benjamin Franklin

                      Banned from the St. Lawrence University Facebook page - March 2016 (But I got better).

                      I want to live forever. So far, so good.

                      Comment


                      • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

                        Hey! SpaceX recovered the fairings, too!!!!

                        https://www.space.com/amp/spacex-reu...nk-launch.html
                        CCT '77 & '78
                        4 kids
                        5 grandsons (BCA 7/09, CJA 5/14, JDL 8/14, JFL 6/16, PJL 7/18)
                        1 granddaughter (EML 4/18)

                        ”Any society that would give up a little liberty to gain a little security will deserve neither and lose both.”
                        - Benjamin Franklin

                        Banned from the St. Lawrence University Facebook page - March 2016 (But I got better).

                        I want to live forever. So far, so good.

                        Comment


                        • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

                          Originally posted by joecct View Post
                          Hey! SpaceX recovered the fairings, too!!!!

                          https://www.space.com/amp/spacex-reu...nk-launch.html
                          What is the actual economics of recovery? It saves money to reuse pieces but it also costs money to retrieve them and of course for the tech to make them recoverable in the first place (though I guess that's sunk cost?).

                          I have no doubt they come out ahead because (1) they can charge so much less and (2) why do it otherwise? But what are the actuals for the ROI on reusability? Are they recovering a majority of the cost of the components?
                          Cornell University
                          National Champion 1967, 1970
                          ECAC Champion 1967, 1968, 1969, 1970, 1973, 1980, 1986, 1996, 1997, 2003, 2005, 2010
                          Ivy League Champion 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1977, 1978, 1983, 1984, 1985, 1996, 1997, 2002, 2003, 2004, 2005, 2012, 2014, 2018, 2019, 2020

                          Comment


                          • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

                            Originally posted by Kepler View Post
                            What is the actual economics of recovery? It saves money to reuse pieces but it also costs money to retrieve them and of course for the tech to make them recoverable in the first place (though I guess that's sunk cost?).

                            I have no doubt they come out ahead because (1) they can charge so much less and (2) why do it otherwise? But what are the actuals for the ROI on reusability? Are they recovering a majority of the cost of the components?
                            According to Musk, the first stage accounts for 75% of the cost of a Falcon 9.

                            Comment


                            • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

                              Originally posted by GrinCDXX View Post
                              According to Musk, the first stage accounts for 75% of the cost of a Falcon 9.
                              Does he recoup all of it?
                              Cornell University
                              National Champion 1967, 1970
                              ECAC Champion 1967, 1968, 1969, 1970, 1973, 1980, 1986, 1996, 1997, 2003, 2005, 2010
                              Ivy League Champion 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1977, 1978, 1983, 1984, 1985, 1996, 1997, 2002, 2003, 2004, 2005, 2012, 2014, 2018, 2019, 2020

                              Comment


                              • Re: Science: Everything explained by PV=nRT, F=ma=Gm(1)•m(2)/r^2

                                Originally posted by Kepler View Post
                                Does he recoup all of it?
                                I believe the costs associated with recovery and getting it ready for another launch are marginal compared to the initial cost of the stage--especially with the latest version. Here's a pretty good breakdown:

                                https://spacenews.com/spacexs-reusab...for-customers/

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