Why have SpaceX, Boeing & Blue Origin ditched abort towers?

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  • 24/04/2019 को प्रकाशित
  • Want an article version of this video? Here you go! everydayastronaut.com/abort-t...
    There’s a new trend going around in the commercial space industry when it comes to launch abort systems. All three commercial companies who are putting abort systems on their crewed vehicles have ditched the classic launch abort tower we’ve seen dominate abort systems in the past.
    Previous vehicles like the Mercury capsule, the Apollo capsule and even the Soyuz all used an escape tower that sat on top of the crew module, capable of pulling the vehicle away from a failing rocket in a hurry.
    And to make this topic even more interesting, we’re seeing another trend in abort systems... SpaceX’s Crew Dragon and Boeing’s Starliner capsules both are using liquid fueled abort motors instead of solid rocket motors.
    So today we’re going to talk about the design considerations that have made SpaceX, Boeing and Blue Origin ditch abort towers on their crewed vehicles and we’re also going to evaluate why the heck Boeing and SpaceX are going with liquid motors instead of solid motors.
    And with both Boeing and SpaceX having experienced serious setbacks and complications with their liquid fueled abort systems, including the loss of a test vehicle, it raises the question… is it even a good idea?....
    ------------------------------
    "How SpaceX and Boeing will get Astronauts to the ISS" - inclips.net/video/RqLNIBAroGY/वीडियो.html
    "Why aborting from Gemini may have likely killed you " - inclips.net/video/5IRdZjjq1Ik/वीडियो.html
    "Why does SpaceX's new Dragon 2 have fins on it?" - inclips.net/video/e2gy6of2yaQ/वीडियो.html
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टिप्पणियाँ • 2 579

  • RockinRobbins13
    RockinRobbins13 3 साल पहले +650

    You aren't the first to report on this issue, but you are the best, most balanced, most thoughtful treatment. Looking forward to details of the SpaceX anomaly. Don't do it fast, do it WELL!

  • Nowhereman10
    Nowhereman10 3 साल पहले +56

    Some interesting history that you didn't cover here is that the Space Shuttle orbiters were originally supposed to have a LES of their own and that design was kept well up until when the vehicle was to go into production, but like other features it was dropped to save weight, complexity, and most importantly money. The system was referred to as the Abort Solid Rocket Motors or ASRM. It could be described as a pusher-type since it was comprised of twin rockets attached to the sides of the orbiter's aft fuselage and when fired would carry the orbiter away from a malfunctioning stack.

  • チル
    チル 3 साल पहले +1

    I bet that Orion Attitude Control Unit was tested by someone sitting there like with KSP just pressing WASD

  • Eat Ham
    Eat Ham 2 साल पहले +271

    My reasoning would just be, “An abort tower doesn’t look as cool”

  • TrippyDrew
    TrippyDrew 2 साल पहले +36

    Man am I on a massive space video binge. The past few days have really re-ignited my interest in space. thank you for playing a part in that bro!!

  • Creamy
    Creamy साल पहले +93

    Tim Dott 2019: The Crew Capsule will never been reflown for Crew

  • Athan Immortal
    Athan Immortal 3 साल पहले +12

    I love deep dives like this. Great editing, well written script, very clear, you're doing great, Tim!

  • Garrett Biggs
    Garrett Biggs 3 साल पहले

    Thank you so much Tim. First off I am so happy to see you back in the chair doing the production videos (its seems like it has been a while). They are great. I love to use them to keep my family interested in the space and science in general. Also you are just the best, you have like a kid in a candy store when it comes to space and I personally love it. Keep up the content. Thank you again

  • Tommy Vaske
    Tommy Vaske 3 साल पहले

    Great content as always, Tim. So the Crew Dragon won't even drop the extra fuel on/before reentry? If they keep it, could the tanks and their contents be used when the capsule flies again?

  • Christophe Ruef
    Christophe Ruef साल पहले

    Hey Tim, great content. Would you ask @spacex to land repurposed 'crew to cargo' dragon capsules propulsively? that's free safe awesome testing.

  • Strike Raid
    Strike Raid 3 साल पहले

    The integrated abort system can also be used for the de-orbit burn (which would be needed regardless), so it saves on launch throw weight (and complexity) too.

  • Ricardo Nogueira
    Ricardo Nogueira 3 साल पहले

    Agora sim eu entendi e ficou claro como é perigosa a profissão de astronauta, qualquer pequena falha pode te matar instantaneamente, admiro muito esse pessoal que mesmo assim vai ao espaço apesar dos riscos. De qualquer modo, ótimo vídeo e parabéns pelo ótimo trabalho.

  • Brian Streufert
    Brian Streufert 3 साल पहले +15

    Likely your best and most technically accurate video to date. Very well done and very well explained. I am not sure I could find something else to add. Hats off to you.

  • Ryan Monaghan
    Ryan Monaghan 3 साल पहले

    I wonder if there is any plan to propulsively land dragon 2's on their reuse cargo missions. There are potentially a lot more of those landings than crewed landings. It would provide an opportunity to demonstrate the tech and improve turn around time.

  • Michael Fink
    Michael Fink 3 साल पहले

    Very detailed explanation, Tim. I agree that propulsive landing of the Dragon capsule would have been awesome. I remember at the unveiling Elon Musk saying “That’s the way a spaceship should land in the 21st century” and I think that’s right. Not that surprised that the change was initiated by NASA.

  • Lord Toast
    Lord Toast 2 साल पहले +3

    I always forget how huge these things are and when I see people beside them I’m still amazed at the size

  • bwjc
    bwjc 3 साल पहले

    Very thoughtful, much more than I expected. I've been thinking about similar things, but most of the ideas you mentioned would never have occurred to me. I think the only thing I would be worried about that you didn't mention is the difference between jettisoning abort motors vs having them in the vehicle when at the ISS or some other station, in terms of risk (or just on orbit lifetime, as obviously having a motor for only a couple minutes vs weeks or months changes risk), but like you said, hypergolics tend to be pretty safe, and the spacecraft would need some anyway for orbital engines.

  • Uncle
    Uncle 2 साल पहले

    Thank you for valuable information you have brought us

  • J.R Isidore
    J.R Isidore 2 साल पहले +3

    Great video, Tim. I watched this when it came out, and decided to rewatch it having just watched Demo-2 (congrats Bob and Doug). Imagine my shock when I realized I hadn't commented or liked the video. Anyway, very informative video. Hope you're staying safe.

  • Erik McErikFace
    Erik McErikFace 3 साल पहले

    Well done, Tim, as usual. Thanks for all your hard work.