Watch SpaceX launch people to space for the first time live

Discussion in 'Science' started by HereWeGoAgain, May 27, 2020.

  1. HereWeGoAgain

    HereWeGoAgain Banned

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    [
     
    Last edited: May 27, 2020
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  2. politicalcenter

    politicalcenter Well-Known Member

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    I still remember John Glenn and the Mercury missions. This stuff is so far advanced from that. Engineering at its finest.... I hope.
     
  3. FatBack

    FatBack Well-Known Member

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    I am here, wonder If I can see it? upload_2020-5-27_15-47-30.png need to look this direction ---- > upload_2020-5-27_15-48-48.jpeg partly cloudy here, at the moment
     
    Last edited: May 27, 2020
  4. politicalcenter

    politicalcenter Well-Known Member

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    If you face north east is on your right and West on your left... etc.
     
  5. HereWeGoAgain

    HereWeGoAgain Banned

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    Scrubbed launch today due to weather.
     
  6. politicalcenter

    politicalcenter Well-Known Member

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    Not anything new. Try again Saturday.
     
  7. Aleksander Ulyanov

    Aleksander Ulyanov Well-Known Member

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    Nice to see they're being safe not sorry.

    I hope it pays off. There is a tendency to look upon Space Travel as something routine while it is still terribly dangerous and this has had tragic results

    Private space travel is the way to go. Hopefully they will couple this with NASA's plan to return to the moon in 4 years and we may indeed see lunar colonies in our lifetimes. Remember, many people were quite confident we would see such years before 2000
     
    Last edited: May 27, 2020
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  8. FatBack

    FatBack Well-Known Member

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    LOL, I seen an older fella on the next block looking NEward, asked him if he was looking for the shuttle, he was and I gave him the news, he said "thanks for helping me save some minutes of my life, no more need to stand here."
     
  9. HereWeGoAgain

    HereWeGoAgain Banned

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    Cool space suits
    Cool having the Teslas deliver the astronauts
    Cool ramp
    Cool cabin - very TNG
    I'm waiting for Wesley Crusher to appear any moment.

    As I understood the narration, this rocket design has made about 20 unmanned flights over the last ten years; some to the space station. They had one disaster but it is now believed to be a proven and reliable design. So it isn't like the early days of the NASA programs. This has been well tested in comparison.
     
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  10. HereWeGoAgain

    HereWeGoAgain Banned

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    But by all appearances, Saturday will be day one of the era of manned commercial space flights.
     
  11. liberalminority

    liberalminority Well-Known Member

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    this wouldn't be the same as walking on the moon for boosting morale, it was done in partnership with a corporate raider.
     
  12. FatBack

    FatBack Well-Known Member

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    Thanks for the tip but I was more pondering about atmospheric conditions and visibilty.
     
  13. politicalcenter

    politicalcenter Well-Known Member

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    Just making sure you were looking in the right direction.
     
  14. HereWeGoAgain

    HereWeGoAgain Banned

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    The launch is scheduled for today, 3:22 PM Eastern Time.
     
    Last edited: May 30, 2020
  15. HereWeGoAgain

    HereWeGoAgain Banned

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    Chance of weather permitting a launch: 50%
     
  16. Grey Matter

    Grey Matter Well-Known Member Donor

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    They should move the launch site to Yuma AZ, it has the most sunny days in all the US and is a great spot for that amazing Falcon reverse landing.
     
  17. HereWeGoAgain

    HereWeGoAgain Banned

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    You want to launch as far South as possible - as close to the equator as possible. This maximizes the advantage of the earth's rotation. We [the rocket] use the existing rotational velocity of the earth and add to that. The farther North you go, the more it costs in fuel to achieve the same orbital velocity.
     
    Last edited: May 30, 2020
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  18. HereWeGoAgain

    HereWeGoAgain Banned

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    Now a 70% chance of a launch today.

    They have a very narrow launch window today - only one moment to launch. Either a go or no go. No delays.
     
  19. HereWeGoAgain

    HereWeGoAgain Banned

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    The first link is still a replay of the first launch attempt on Wednesday.

    This is live
     
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  20. modernpaladin

    modernpaladin Well-Known Member Past Donor

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    :applause::applause::applause::applause::applause::applause::applause::applause:
     
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  21. HereWeGoAgain

    HereWeGoAgain Banned

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    Everything seemed to work perfectly. We lost the signal for a moment when the first stage landed on the retrieval ship dammit! I wanted to see that. But a moment later the signal was back and the first stage was safely landed.
     
  22. gnoib

    gnoib Well-Known Member

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    Just a nother perfect SpaceX start, outstanding.
    Perfect stage 1 landing.
    SpaceX rocks.
     
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  23. HereWeGoAgain

    HereWeGoAgain Banned

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    Brain Challenge: Can anyone show how we calculate the orbital velocity?

    And when have we reached "max Q"
     
    Last edited: May 30, 2020
  24. HereWeGoAgain

    HereWeGoAgain Banned

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  25. gnoib

    gnoib Well-Known Member

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    I do not have the calculations.
    But max Q depends on the vehicle and its aerodynamics, speed and altitude and weight of the cargo.
    If they shoot satellites into space they have different farings, the part which covers the satellite during the way up.
    So max Q differs at every start.
    Why is max Q so important. The structure of a rocket can hold only so much load. If they would not throttle down the engines, for those few seconds, they just would push through the rocket. At those speeds, past mach 1 a few seconds means altitude which reduces the density of the atmosphere, less friction, less pressure from the top to the bottom. The bottom pushes like crazy and the top gets stopped by the thick atmosphere.
    I understand the mechanics, but the math is beyond me.
     
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