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Rakaydos

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  1. Rakaydos
    So the emdrive is exploiting quantized momentum to generate asymetric pressure?
  2. Rakaydos
    But at the same time IT scales arbitrarally small, And you can cluster and stack them.
  3. Rakaydos
    So what's the lower bound- Assuming fixed costs like employee salaries, facility upkeep and so on remain constant (and Elon just overworks the people he already has), and they spend literally nothing on inspections and checks over 80 launched cores (8 cores reused 10 times each- 20 FH launches and 20 F9), how much does SpaceX have to make per launch (on average)to break even?
  4. Rakaydos
    Each Falcon Heavy is considered 3 Falcon 9 launches at once. So it works out to about 20 Falcon Heavies and 22 Falcon 9s a year at "maximum rate", according to your numbers. That actuually lines up fairly well with Elon's claim of "launching a rocket every week."
  5. Rakaydos
    If actual launch costs plummet with reuse, and it's fixed costs like pad rent and mission control crew that drag up the overhead, I wonder if spaceX will attempt "infrastructure imporvement" in space on their own dime. For example, launching an orbital fuel depot so they offer it as a service.
  6. Rakaydos
    I would think it has more to do with intent. A helicarrier pilot isnt trying to lift the hammer, he's just trying to fly an airship. Tony, however, was full of intent, and plans for what he did when he succeded. Captian america was doing it on a bet, he had no plans- until the hammer shifted. "Wait, I can do this? I wonder..." and then he failed. Vision was trying to make a gesture of trust by passing a weapon to it's owner. not even a sidethought to personal gain.
  7. Rakaydos
    ...this is why SpaceX uses such a "skinny" rocket.
  8. Rakaydos
    I'm guessing Downrange Platform Landing, also called a "Droneship" landing. (since SpaceX cannot legally call it a barge anymore. Thanks Bezos!)
  9. Rakaydos
    The best manned mission plan I've seen doesnt have a manned landing at all. Or even drop into martian orbit. The ship does a flyby of mars, dropping more rovers and slingshotting into an inclined orbit that meets mars again in half a martian year. Astronauts spend that half-martian-year with less than 1 minute of comunication lag from the martan surface, operating robots with very little lag. Once they flyby mars again, they slingshot back into an earth return trjectory.
  10. Rakaydos
    Commercial flights are, by definition, commercial activities. They at least break even. NASA flights, SpaceX charges something like 50% more for, for the same kind of launch. That's nearly pure profit.
  11. Rakaydos
    Alpha centauri is prbably best for the first mission.A trinary is a plausable investigation target, and stars are easy to see. plus it's close.
  12. Rakaydos
    So I ran across someone using Higgs particles to try and explain what is being "pushed off of" "But the idea that there’s a universal medium that light propagates in? That… actually turns out to be true. For instance, light exists because the Higgs field fills all of spacetime, and it has a non-zero energy density. You can actually think of it like a big fluid filling all of space, insanely enough. That field actually is what defines the way that photons can propagate without interacting with that fluid (i.e. how they can move at the speed of light). The “quantum virtual plasma” is hand-wavy term for that sea of particles. So… yeah. Not really true that something like the aether doesn’t exist. Space isn’t empty." What does that actually mean, in our context?
  13. Rakaydos
    For there to be NO land mass, there's only a couple possibilities: An ice world with a subsurface ocean, ala Europa. A world with no geological activiy to speak of. Either one shuts down a lot of possibilities for development.
  14. Rakaydos
    My suggestion would be shallow seas and/or contenental shelf based. Archipelicos of coral reaching the surface can be "explored" in pre-history, and later can provide the basis of tech that simply cannot be made below water, no matter how advanced your organic chemestry tech.
  15. Rakaydos
    Which is why i positied Amimal Husbandry as the squid's key technoligy. Cultivated coral, resin and wood as building materials instead of metal, electric eel eletrolisis for hydrogen fuel instead of gasoline.
  16. Rakaydos
    Species: Xeno-octupi Planet: low tectonic activity, no/weak magnetic field. Shallow oceans, archipelicos Ecology: Shallow water bottomfeeder Tech basis: Farmed coral, organic resin sealent. Electric eel electrolisis.
  17. Rakaydos
    Keep in mind, water is heavy. Theit life support requirements wll be much harsher than our own.
  18. Rakaydos
    If the problem is too bad, the team that wlds the leg to the deck can just throw a dust cover over the engines for the trip back.
  19. Rakaydos
    So presume an aquatic species that has opposable thumbs, or equivilant. A rocket built by squid?
  20. Rakaydos
    Keep in mind that after the second stage separates, the 1st stage dry mass drops dramatically, (it's not carrying upperstage engine, fuel and Dragon) forcing you to recalculate it's DV. because the stage is so much lighter, a hundred DV lost for the main payload or so balloons into more than enough for a breaking burn, reentry burn and landing.
  21. Rakaydos
    Asking what SpaceX mars plan is, is pointless. We know they intend to reveal their mars plan sometime this year. It's not revealed yet. Wait for the facts.
  22. Rakaydos
    Interesting. So we could go to the moon to stay for 10 billion, but nasa only has third of that for manned spaceflight.
  23. Rakaydos
    That's what I was saying, it wouldnt -be- reflected in a concentrated beam- it's just reflecting off a curved surface. That's not saying you want to be wherever the focal point of the reflector actually is, but it's not going to bounce back and kill the weapon.
  24. Rakaydos
    Parabolic reflectors assume incoming signals are coming from arbitrarally far away, and thus each ray is parallel. The antenna in the picture above is for dispersion, however. A parabolic reflector would miss it's focal point.
  25. Rakaydos
    Would it pass over mexico before going higher than national aerospace? I dont see it being a problem if it's got more than 100 km of searoom before hitting mainland. Edit: yea, they got more than 500 miles searoom. Mainland mexico isnt an issue any more than mainland Soviet Union ever was..
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