Rakaydos

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About Rakaydos

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    Senior Rocket Scientist

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  1. Rakaydos

    SpaceX Discussion Thread

    Speaking of Rover racing... The moon has a day of (28x24)= 672 hours and an equatorial circumference of 6786 miles. A Solar powered rover that can average at least 10 miles per hour doesnt need to stop, ever. Nor does it need to worry about surviving the extremes of lunar night (compared to lunar day)
  2. Rakaydos

    Sky ramp

    Again, I think my point was missed. launch for launch, it takes a certian amount of electricity to run the maglev. How much electricity is that? How much rocket fuel could the Sabatier reactor generate with that much electricity? And how much mass could a first stage with that much fuel (and the same upper stage, minus wings) put into orbit?
  3. Rakaydos

    SpaceX Discussion Thread

    needs a yellow/orange boarding tube.
  4. Rakaydos

    Sky ramp

    ...I'm not suggesting some kind of absurd Sabatier-thermal rocket. Just a Methane fuel plant for fueling a conventional reusable rocket to carry the same payload instead of the ramp.
  5. Rakaydos

    Sky ramp

    My question is, with all the power needed for an electromagnetic track and magnetic acceleration, how much rocket fuel could you literally create out of thin air (and water) with Electrolysys + Sabatier reaction?
  6. Rakaydos

    SpaceX Discussion Thread

    L2 is NSF's "Pay for inside info" subsection.
  7. Rakaydos

    SpaceX Discussion Thread

    A lot of it is explicitly out of date. "In 2008 it was Falcon XX, with these stats. In 2014 MCT had these stats. In the 2016 conference the ITS had these stats. And in 2017 BFR had these stats. Also, Elon says more news "in a month or so" as of 3 weeks ago."
  8. Orbital assembily has the advantage that you dont care if the rocket is floppy at 2g. Worst case, I abort to a secondary mission objective. The Tylo lander alone could probably do Duna or... I'm sorry, I honestly cannot remember the name of the forgettable-memed planet- but the lander could probably go there with just the heat shield for return.
  9. Dammit, none of my vertical layers are passing fuel, even with the decouplers set to enable crossfeed. Straight horizontal works, even through the decoupler for the kerbin return tank, but any multidock from multiple launches seems to be unable to pass fuel. (that is, I could dock 3 pods in a row fine, but trying to dock those three to another 3 fails fuel flow) Wouldnt be TOO bad if there was fuel pumping (I lied- the tank structure I used would be a PITA to fuel pump) but this mission looks like a bust. Edit: Ok, looks like there's still a tree logic for fuel flow, but multidocks make predicting that tree very hard. I may need to reassemble, and I'll probably be floppier, but what I want isnt impossibe. Edit2: Opened all the crossfeed valves so any of the tanks can be accesed by any of the docked engines. Original plan was to use the decouplers to plan fuel flow, but with the crazytree, I'm going to have to use manual valve opening. Again, not impossible, but a pain in the ass. Edit 3: one tank is being stubborn. It's clearly connected through a set of docking ports that claim they arnt docked. I'm able to clear away the rest of the pod with a decoupler, but I may have to lose a second pod to get rid of the faulty decoupler.
  10. Probably not, actually. Once you have the hang of blind rendevus, orbital docking is easier than lining up ground docking without crushing wheels or something. Being able to spam the same module simplifies things a tad, too.
  11. This was the most aggravating section of the build, where slight inconsistancies in docking multipled out of control and high physics-warp forced-docks ruin any sence of aestetics the ship had to begin with. (Yes, that exposed docking port says it's docked to the pod that isnt even close to aligned.) Going to run a quick fuel-flow check tomorrow to see if this monstrosity even still works, then I can launch and dock the remaining 12 fuel pods. No fancy multidocks, just decoupler-mounted to the sides of each of the outboard pods. https://imgur.com/a/nwYV12r
  12. Next wave is 8 more standard pods. https://imgur.com/a/7QQi6ZN
  13. Rakaydos

    SpaceX Discussion Thread

    A year or so after the first hopper flights of BFS.
  14. Rakaydos

    SpaceX Discussion Thread

    Elon has said, basically, never again. Falcon heavy would have been canceled if Gwynn hadnt REMINDED Elon that the air force had already bought a ride. Plus, apparently, two other near-cancelations.
  15. After a bit of a hiatus, I'm back, with earth departure pods 3-8. https://imgur.com/a/WY74lF0