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

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   Message 105,863 of 106,651   
   Doctor Who to alain245@videotron.ca   
   Re: Testing of quick disconnects   
   13 Sep 22 09:54:19   
   
   From: doc@tardis.org   
      
   On Mon, 12 Sep 2022 19:30:07 -0400, Alain Fournier   
    wrote:   
      
   >On Sep/12/2022 at 04:18, pnn calmagorod wrote :   
   >> Il giorno sabato 10 settembre 2022 alle 18:21:39 UTC+2 JF Mezei ha scritto:   
   >>> Not sure if there is anoyone left in the group, but just in case.   
   >>>   
   >>> Consideirng SLS has been in development for over 10 years, considering   
   >>> they already had quick disconnect experience for H2 refueling on   
   >>> Shuttle, I am curous on what constraints would have prevented them from   
   >>> developping a reliable H2 fill line quick disconnect for SLS ?   
   >>>   
   >>> I take it that they can't test it at VAB because they don't have LH2   
   >>> lines there. (and leaking H2 indoors, not a great idea).   
   >>>   
   >>> But when this quick disconnect was designed, wouldn't it have had some   
   >>> real testing with LH2 to ensure it works well and that any limitations   
   >>> and maintenance requiremenmts (eg: change rubber seals every X refills)   
   >>> would be well known.   
   >>>   
   >>>   
   >>> And considering the number of tests they did of this rocket, how come   
   >>> this quick disconnect problem didn't get noticed before ?   
   >>   
   >>   
   >> Nothing will never colonized  by roketry   
   >> It is a physical law,   
   >> Continue till to the disaster   
   >   
   >There is no physical law that prohibits space colonisation by rocketry.   
   >On the other hand there is a physical law that prohibits space   
   >colonisation using PNN. If you don't know what physical law that is let   
   >me give you a hint. PNN stands for propulsione non newtoniana.   
   >   
   >   
   >Alain Fournier   
      
   you are an idiot who don't want to see the reality.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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