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sh1pman

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Everything posted by sh1pman

  1. sh1pman
    Raises a question about how such an unskilled worker got assigned to the construction of a spaceship.
  2. sh1pman
    https://sputniknews.com/science/201809111067929876-hole-soyuz-spacecraft-roscosmos/ "The results that we have received fail to provide an objective image [of the situation] to us. Further work will be continued by a commission created by the [Roscosmos] corporation itself. The situation is far more difficult than we have expected," Rogozin told reported. So they don’t really know where the hole came from.
  3. sh1pman
    I hope they try propulsive landing for cargo missions at some point. Probably easier and cheaper to repair and refurbish the ship if it didn’t contact with sea water.
  4. sh1pman
    Also explains several scratches near the actual hole. Wasn't quite able to do it right the first time.
  5. sh1pman
    And what about the BFR deprecation? Operations cost? Maintenance?
  6. sh1pman
    That’s quite a mistake. Missed by 15 cm or so.
  7. sh1pman
    Video just released. Showing the hole after repairs.
  8. sh1pman
    @kerbiloid always puts jokes inside spoilers.
  9. sh1pman
    Fairing recovery is kinda proving to be as hard, if not harder, than booster recovery. Maybe they should try something different, like redesigning the fairing to be water resistant. It's probably not very practical though, because of opportunity costs. F9 R&D will take resources and time that could be used for BFR.
  10. sh1pman
    Not that much harder than DC-X Composite fuel tanks were done before.
  11. sh1pman
    They don’t fool around, do they?
  12. sh1pman
    They always do, if it is indeed sloppiness. Proton accelerometer hammered upside down? Meteor-M flight program with incorrect launch site coordinates? They admitted their mistakes. Just because you're paranoid doesn't mean they aren't after you. Roscosmos actually released a statement on this: http://en.roscosmos.ru/20743/ Pretty sure it won't be swept under a rug. Not with the current boss of Roscosmos.
  13. sh1pman
    Well, according to "anonymous sources" in RSC "Energia", drilling is not used during the construction of Soyuz at all. Another source confirmed that no drilling is supposed to be done inside the ship. Of course, these are all just "sources" opinions, and should be taken with a grain of salt.
  14. sh1pman
    It looks more and more like deliberate sabotage.
  15. sh1pman
    If it’s completely refilled in LEO first, it should have enough fuel to match and then brake. Apollo was 11 km/s, so let’s say it’s 12 km/s from Mars. 12-7.7=4.3 km/s to match. Then at least 1.1 km/s to re-capture into elliptical orbit. 4.4 km/s left for maneuvers and landing.
  16. sh1pman
    Next orbit doesn’t have to happen. If people can be transferred (in a reasonable time) to the second ship, it can then undock and brake into Earth orbit. It needs at least 4.2 km/s for the initial rendezvous, and then 1.1 km/s more to brake into a highly elliptical Earth orbit. Then burn a little at apogee to bring perigee into atmosphere. How much dv does a full BFS have?
  17. sh1pman
    Not necessarily. Another ship can rendezvous with them near Earth. Kinda like catching an asteroid in KSP.
  18. sh1pman
    Yep. TBH, these scenarios need to be understood and prepared for before the first manned BFR sets off to Mars.
  19. sh1pman
    Or it would result in a shorter mission time. Like making them stay on Mars for 4 months instead of 2 years. Alternatively, it may require sending an additional supply BFS during the next transfer window (if there’s enough supplies to survive until it arrives).
  20. sh1pman
    Maybe the solution is to send BFS to and from Mars in groups of two. If one suffers a mission-ending failure in space, another can dock to it (requires nose docking port) and save the crew. Obviously, it can't be done during EDL, but if the problem is discovered earlier, there will be a way to save the people.
  21. sh1pman
  22. sh1pman
    Ok, not so bad. But what will eventually happen to the body? I guess water and fluids will evaporate into space, leaving a mummified corpse. Complex organics will eventually photo-dissociate into simple molecules and ions, and escape as well. And after a while, there will only be a bleached space skeleton.
  23. sh1pman
    I need to test this in KSP... ..How is it called free-return if it requires 3.3km/s dv?.. never mind, got it. So it’s a Hohmann transfer that uses a gravity assist from Mars to fling you into a longer orbit that intercepts Earth, right?
  24. sh1pman
    No, by the time you get to Mars, the planets won’t be aligned correctly for a return trajectory to intercept Earth. Hohmann transfer to Mars takes 8.5 months. 8.5 more months for a return trip. 17 months total. When you reach Earth’s orbit, the Earth itself will be on the opposite side of the Sun from you. That’s why you have to wait several months before departing from Mars.
  25. sh1pman
    Yea, terrible situation to be in. If I were them, I’d exit the spaceship with no spacesuit after finishing the diagnostics. Hmm, would I explode or freeze first?
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