Space Exploration,astronomy & Cosmology

Discussion in 'Taylor's Tittle-Tattle - General Banter' started by StuBoy, May 26, 2020.

  1. StuBoy

    StuBoy Forum Cad and Bounder

    Liquid hydrogen is a tricky taskmaster.
     
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  2. Moose

    Moose First Team Captain

    James Webb Telescope nearinfrared image of Neptune and its moons including Triton shining brightly (top left).

    E8F8FE46-E462-4E7E-BEA9-94F71F43DF14.jpeg
     
  3. StuBoy

    StuBoy Forum Cad and Bounder

    Amazing image that.

    NASA managed to fill their SLS rocket in a test yesterday with liquid hydrogen, despite getting a few leaks again. Seems they managed them ok though, and rumours they might push for another attempted launch next Tuesday 27th Sept.
     
  4. Bwood_Horn

    Bwood_Horn Squad Player

    I can't wait to see what James Webb makes of the rings around Uranus.
     
  5. Moose

    Moose First Team Captain

    That’s an unwarranted intrusion into my privacy.
     
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  6. Filbert

    Filbert Leicester supporting bloke

    Holy **** that is absolutely stunning.
     
  7. Moose

    Moose First Team Captain

    One day humans are going to build a spacecraft that can explore the solar system. Imagine approaching Neptune, being able to pick out the detail of the storms, the turbulence, the moon system. Will be mind blowing.
     
  8. Filbert

    Filbert Leicester supporting bloke

    And who knows, maybe by then we’ll have sacked Rodgers.
     
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  9. Bwood_Horn

    Bwood_Horn Squad Player

    ffs m8 this fred is about science fakt not science fikshon
     
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  10. Filbert

    Filbert Leicester supporting bloke

    soz hun msg me x
     
  11. Smudger

    Smudger Messi's Mad Coach Staff Member


    Data collected on the orbital perturbation of Dimorphos as a result of the impact will let us know if this is effective. Larger impactors will be needed against larger bodies.
     
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  12. BigRossLittleRoss

    BigRossLittleRoss First Team

    I’d get those rings seen by a doctor . I’ve heard JamesWebb hasn’t had his checks done
     
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  13. UEA_Hornet

    UEA_Hornet First Team Captain

    Looks like the next attempt to get the SLS Artemis mega-rocket into space will be at 1.04am Eastern (6.04am GMT) tomorrow.
     
  14. StuBoy

    StuBoy Forum Cad and Bounder

    Yep they're going for it by all accounts, despite losing some insulation when the rocket had to ride out hurricane Nicole. The only way to replace this would be to roll back to the VAB. Looks like they accepting the risk and pushing on for tomorrow. It's going to be a night launch (if it happens) which is a shame.
     
  15. lendal

    lendal Reservist

    Looking good right now….remember early Apollo flights, has a similar feel to it
     
  16. StuBoy

    StuBoy Forum Cad and Bounder

    Well they finally did it, and it all went quite smoothly this time by all accounts. The most powerful rocket ever to reach orbit. Lift-off at about 2:30 in this video.

     
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  17. lendal

    lendal Reservist

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  18. Bwood_Horn

    Bwood_Horn Squad Player

    May be of interest to participants in this thread (from Amazon 23/11/22):

     
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  19. lendal

    lendal Reservist

    This afternoon on its way back..

    Orion, The Moon and us…the crescent bit…
     

    Attached Files:

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  20. PowerJugs

    PowerJugs Doyley Fanatic

    It may have done a tad better than they projected than that 90 day operation. Just a smidge.
     
  21. BigRossLittleRoss

    BigRossLittleRoss First Team

    I’ve already booked my Thomas Cook package tour for 2029. Hopefully they would have finished building the pool by then .
     
  22. Smudger

    Smudger Messi's Mad Coach Staff Member

  23. hornmeister

    hornmeister Club Legend

    Good idea. Avoid RyanSpace though, don't want to be landing on the moon and then having to get a bus to Neptune. They'd probably charge extra for oxygen as well.
     
    Last edited: Dec 13, 2022
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  24. BigRossLittleRoss

    BigRossLittleRoss First Team

  25. Bwood_Horn

    Bwood_Horn Squad Player

  26. cyaninternetdog

    cyaninternetdog Forum Hippie

    Great documentary about the last Apollo mission. Very detailed and lots of footage. Worth watching it all.

     
  27. SkylaRose

    SkylaRose Administrator Staff Member

    As I work in this sort of field, I was wondering, would there of been any way to prevent the Challenger Shuttle from exploding in the 1986 on it's maiden voyage? I know why it happened - a mixture of very cold weather, a faulty O-Ring and condensed rainfall the night before in the soder caused the ring to more or less crack which exhaled plumes of black smoke. Once the fire hit the liquid EX tanks that was game over. It was such a sad thing to happen and a great loss of life. Was it purely down to bad luck taking a chance on the weather or was it a fault of the design? Obviously there is no way to stress-test a shuttle of that size to widthstand wind speeds of whatever that was - so high up in the atmosphere. Today's shuttles are much more held together and designed with hundreds of stress and safety tests. Some of the rocket launching software I code details a lot of the configs, and wow - talk about first class attention. Going back to my orignal point, was there anyway to of foreseen it?
     
  28. Smudger

    Smudger Messi's Mad Coach Staff Member

    It was a known risk which had been warned about by those at Morton Thiokol. The notable man involved is the sadly late Roger Boisjoly who continually sent warnings to upper management about the performance of the rings at cold temperatures. He was ignored with obvious results. He was also ostracized by management and colleagues. Shame on them. Absolute shame on them. This thing in human nature about perceived insults to the ego carries on and idiotic self pride.

    Richard Drummer Feynman set the record straight as he said summing up nature cannot be fooled and the idiots in senior management at NASA and MT should have put technical considerations before pride and pressure from the Government in getting a launch.
     
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  29. SkylaRose

    SkylaRose Administrator Staff Member

    That's excellent, thank you Smudger. Typical reason of power over safety measures. It is clear they knew the fault of the rings and needed taking offline (or whatever it was called then) and fully checked. I understand that technology back then was nothing like it is today, but still you would of thought had he got the approval to delay the launch, it would of been something they could of caught. I remember seeing the launch on T.V and the total shock of seeing that Live.... it's haunting, and knowing what caused it behind the scenes just makes you rage filled. We cannot change the past, we know that, but this one was not human error - it was human big wigs thinking they know better than the scientists who developed the technology.
     
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  30. Smudger

    Smudger Messi's Mad Coach Staff Member

    The thing is it was an avoidable disaster. In some cases as with early jet planes the stresses on materials were not all that well understood for instance and only came to light after several accidents and diligent work by the RAE. This was entirely avoidable and cost the lives of seven astronauts.
     
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  31. SkylaRose

    SkylaRose Administrator Staff Member

    Agreed. Maybe adding this part to the launch code could of helped. DISCLAIMER - A very simplified version of a safety check protocol

    Code:
    --
    -- check O-ring temp during atmosphere - run this function on a constant loop
    --
    function Current_O_RING_Temp(in Constant Float MAX_TEMP; in out Float Has_Exceeded) return Boolean is
    begin
        if Has_Exceeded >= MAX_TEMP then
       return True;
        -- do something here, like abort the system into critical safety mode
    
       else
       -- keep flying skipper
       end if;
        return False;
    end Current_O_RING_Temp;
     
  32. Bwood_Horn

    Bwood_Horn Squad Player

    Something that tickled me was that the 'O' rings were fabricated by a fundamentalist Mormon clan in that bastion of polygamy, incest and kiddie-fiddling scientific precision manufacturing Colorado City, Arizona.
     

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