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   sci.space.policy      Discussions about space policy      106,651 messages   

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   Message 105,599 of 106,651   
   Snidely to All   
   Re: Dragot de-Orbit   
   08 Nov 21 19:47:59   
   
   From: snidely.too@gmail.com   
      
   Lo, on the 11/8/2021, Snidely did proclaim ...   
   > Snidely used thar keyboard to writen:   
   >> On Monday or thereabouts, Snidely asked ...   
   >>> Monday, Snidely murmurred ...   
   >>>> JF Mezei suggested that ...   
   >>>>> Looking at Inspiration4 landing.   
   >>>>> They were the highest a human has been since last Hubble repaid mission   
   >>>>> (and may have been higher).   
   >>>>>   
   >>>>> They jettisomed the "trunk" before de-orbit burn.  Is this SOP for   
   >>>>> Dragon or special for this mission?   By detaching before de-orbit,   
   >>>>> doesn't that create space debris with trucnk staying high up for a long   
   >>>>> time (since that orbit was bery high) ?   
   >>>>>   
   >>>>> I was under the impression the standard was to fire de-orbit engines and   
   >>>>> then separate which ensures both portions de-orbit with the capsule   
   >>>>> distancing itself from the trunk/service module as soon as aerodynamics   
   >>>>> kick in.   
   >>>>   
   >>>> This evening, we're expecting /Endeavour/ to proceed through trunk   
   >>>> separation, nosecone closure, and the deorbit burn.   
   >>>>   
   >>>> [Crew2 just got "Dragon is go for undocking"]   
   >>>   
   >>> Fly around complete, now in free flight, with the departure phasing burn   
   >>> next.   
   >>   
   >> That was done, now claw separation confirmed, and then "Nominal trunk   
   >> jettison"   
   >>   
   >   
   > [This reduces the mass the Dracos have to apply delta-vee to, as well as   
   > reducing the parachute load]   
   >   
   > "de-orbit burn complete, performance nominal, [nose cone] closure intiated"   
   >   
   > [de-orbit burn was about 15 minutes]   
      
   Splash down 7:33 PST, 10:33 EST off Pensacola FL.   
      
   Great views from the WB-57.   
      
   /dps   
      
   --   
   "Inviting people to laugh with you while you are laughing at yourself   
   is a good thing to do,  You may be a fool but you're the fool in   
   charge." -- Carl Reiner   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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