Astronomy and space exploration

Discussion in 'General Discussion' started by eloyc, Apr 10, 2017.

  1. eloyc

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    Blue Origin's New Shepard reusable rocket launch and landing:


    :)
     
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  2. AlBran

    AlBran Ferro-Fibrous
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    Now show the W40K Warmonger Titan-class cannon that fires it.
     
  3. cheapchips

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    The nose of the Starship hopper fell over in the 50mph winds. The lower tank section's fine. It'll be a couple of weeks for them to fix up the nose, which currently looks like a non flaming version of the Hindenburg.
     
  4. hoom

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    Edit:
    Its such an odd duck :neutral:

    I really don't understand the whole sub-orbital 100km straight up and then straight back down thing, really doesn't seem like much point especially for 'nasa science payloads'.

    Meanwhile this back in Dec

    Rocketlabs using batteries to run fuel pumps -> all fuel goes to propulsion.
    I'm not sure I'm convinced its actually more efficient but it does actually seem to work & they've secured a bunch of commercial payloads all the way to orbit.
    Also if you piss us off we can now bombard you with Hobbit feet & frozen Lamb legs from fucking space! :runaway:
     
    #404 hoom, Jan 23, 2019
    Last edited: Jan 23, 2019
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  5. eloyc

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    :???:
     
  6. cheapchips

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    I guess there's some experiments you can only do in microgravity. They have 3-4 minutes of that after separation. The main point of NS is as a reusable test vehicle for Blue. Their New Glenn orbital vehicle will launch in a couple of years. It'll be huge!

    They're kind of building it from the top down. The 2nd stage of NG is derived from NS. It uses hydrogen fuel and a vacuum versions of NS's BE3 engine.

    Electric pumps + batteries have lousy power to weight ratio compared to conventional turbopumps in large rockets. Turbo pumps don't scale down very well though, so it's a good choice for Electron, which is a relatively small rocket.
     
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  7. hoom

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    Ah so these 100km up & down hops aren't the final target?
    I had the impression just making it reliable enough for high frequency space tourism up/down was the end goal.

    Also good info :smile2:
     
  8. cheapchips

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    They don't plan to fly people to orbit for all least 5 years, so that'll be suborbital for a while.

    Their New Glenn rocket has a factory, launch facility under construction and the engine has almost finished development. It's more than just a CG showreel, but this their CG showreel.

     
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  9. manux

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    This was a fascinating discussion about universe and stuff

     
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  10. hoom

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    Thunderf00t did a pretty impressive vid I just watched

    Possibility of it being super low density kinda like foam never occurred to me but retrospectively should have probably been pretty obvious
     
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  11. eloyc

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    ^Thanks for the videos, guys. I'll watch them later.
     
  12. hoom

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    Also I just can't think of that name without my mind going immediately to
    [​IMG]
    Has been bugging me all day (yes I know its spelt differently but you know, there is no Thule, only Zuul)
     
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  13. London-boy

    London-boy Shifty's daddy
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    She was great in Kill Bill.
     
    #413 London-boy, Jan 31, 2019
    Last edited: Feb 1, 2019
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  14. eloyc

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    Hahaha, I have to watch all those movies, now that I think of it!

    Lol! BTW, when the guy in the video said that the moon is approximately the size of "America" and then a map showed that the moon occupies the space of the US, I cringed a bit.
     
  15. eloyc

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    Yesterday, NASA announced that in one week we'll see the first demo flight for the Crew Dragon capsule (uncrewed). <3

    Also yesterday, this:
    https://www.space.com/virgin-galactic-powered-flight-february-2019.html

    [​IMG]
    I wonder if one day this ship will take off on its own. I don't know if this has ever been mentioned as a future goal.
     
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  16. cheapchips

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    SpaceShipTwo rocket motor isn't powerful enough to do that. You'd be talking about a different vehicle.

    Virgin hasn't talked about what it wants to do next. Air launch doesn't really scale very well. The now canned orbital craft Stratolaunch was developing needed the biggest plane in the world and was only as capable as a medium lift rocket.
     
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  17. eloyc

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    Of course. I meant a future iteration of the model, in any case.
     
  18. cheapchips

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    If you can imagine sticking wings to New Shepherd, but bigger, since it also has to carry the wings. Doesn't really seem very practical.
     
  19. eloyc

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    No matter what, a very, very complicated subject, indeed.
     
  20. nutball

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    It's like... as hard as rocket science, you could say.
     
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