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sh1pman

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Everything posted by sh1pman

  1. sh1pman
    Think replacing 2 SL engines on BFS heading to Mars with CO/LOX ones then. Then use the methane tank to store CO instead. Way easier to set up ISRU this way than with drilling ice and doing Sabatier. Questionable dv though, since ISP is much lower. But it can be enough for suborbital hops and maybe orbital operations. Anyone got any thoughts about this? Can it possibly work?
  2. sh1pman
    Can't you just use liquid carbon monoxide/LOX combustion on Mars? Both components can be produced from atmospheric CO2, no drilling required. This old paper by NASA states that the specific impulse can be as high as 280 for a high pressure engine (such as Raptor). Not great, but sometimes good is good enough.
  3. sh1pman
    No more delays so far. Currently, the launch is scheduled for November.
  4. sh1pman
    Two launch clamps were added for FH side boosters
  5. sh1pman
    One day Musk will land a booster on Jupiter, I tell ya. And then reuse it. He's good at it.
  6. sh1pman
    Also, spot the difference: (before and after)
  7. sh1pman
    Elon selling houses on Jupiter with solar power. Obvious fraud! Everybody knows that Jupiter is too far from the Sun to have any useful solar power generation potential!
  8. sh1pman
    What about wind power? Wind speeds of up to 80 km/h are pretty common in Antarctica. Check this awesome real time wind speed globe here.
  9. sh1pman
    I just got a great idea how a Moon colony can be profitable. Set up a top-security prison there and send world's most dangerous criminals there. Governments would pay to keep them hundreds of thousands of kilometers away from Earth, where there's literally nowhere to run.
  10. sh1pman
    In theory, a self-sustaining Antarctic colony would be just as good a lifeboat as Mars can be, in this scenario. Would be much easier to set up, too.
  11. sh1pman
    Ok, I give up. Looks like the only reliable doomsday scenario left is alien invasion.
  12. sh1pman
    With BFRs of course! The first ones will have to be refueled with 20 or so launches each, true. But when the hotel base is all done, next ships can benefit from it, needing fewer refuels. Just thinking about how cheap a tour can get.
  13. sh1pman
    Doesn't have to be climate-related. What if some virus or bioweapon spreads out of control and kills every human on Earth?
  14. sh1pman
    Understandably. But I was considering an already existing Moon base and ice mining operation underway. Best case scenario, like what is theoretically possible and what isn't.
  15. sh1pman
    Well, the dinosaurs were probably wiped out by an enormous asteroid strike. Too bad they didn't reach Mars in time!
  16. sh1pman
    Alien invasion! But seriously, there are plenty of those. Consider the Florence asteroid for example. Both programs were government-funded. Just like the idea of being an interplanetary species can be worth something to some government somewhere. Might've used the wrong word there. "Profitable" is what I meant to say.
  17. sh1pman
    If it did, the Apollo program would never happen. Or Sputnik. Or any space exploration at all.
  18. sh1pman
    Well, being a multiplanetary species is more than just "cool". It can save us from some cataclysmic event. Or overpopulation. Doesn't always have to be economically feasible.
  19. sh1pman
    I wouldn't want to be anywhere near a tank with 80 tons of cyanide... Won't urea be a much better (and safer) alternative?
  20. sh1pman
    Moon surface is actually very reduced, because of all the electrons from the Sun bombarding it non-stop. For example, iron there is in 0 and +2 oxidation states, while on Earth it's pretty much only in the +3 oxidation state.
  21. sh1pman
    @Rune what if they only refuel the BFR ship just enough to land on the Moon, and ISRU (if it's possible) the fuel required to get back to Earth? Will it decrease the number of launches significantly?
  22. sh1pman
    Also, what about the heatshield? How are they going to restore it on Mars?
  23. sh1pman
    To be honest, I've never thought about the possibility of refuelling in high elliptic orbit. This will be bloody awesome if they can make it work.
  24. sh1pman
    SpaceX Airways. Ride the ICBM!
  25. sh1pman
    Where did you get that number? Wikipedia gives something like 1.6 km/s from lunar orbit to surface.
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