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MBobrik

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Everything posted by MBobrik

  1. Van allen belts. You have to stay under them, or you have to provide all the shielding by yourself. . . There have been ion drive probes which flew to the moon with minimal acceleration. The same can be done in principle with ISS.
  2. . 1. Pushing big stuff. If your Eve seashore lander/ascent vehicle got 160 ton, 2.5 ton per engine is negligible, however the more than 2x smaller fuel consumption is not. The same goes for landing at medium to low gravity (mostly) airless worlds like Duna or the Mun. 2. Loads of dV. Eeloo, Moho. 3. In case the gravity is low enough, Nuke gives your (big)skycrane much longer hover time. Or, if you do biome hopping, you can hop more times before refueling.
  3. . As usual. keys for part rotation in VAB are at the bottom of the page http://wiki.kerbalspaceprogram.com/wiki/Key_bindings
  4. Tested my new "Ugly Drums" style extreme ascent vehicle on Eve. It was a pain just to land the damn thing. .
  5. maneuver nodes don't have that precision to begin with. a few meters off in either direction and you end up lithobraking.
  6. . I see the problem right there. As I said, kerbals *don't do* 90 deg forward/backward angles. you can't make them step forward and go walk on a horizontal surface of a part like that. . you have to build a gently angling pathway that goes from the vertical ladder continuously to horizontal like that : . Ladder: . Angled ladder piece 1 (30 deg): . Angled ladder piece 2 (60 deg): . Horizontal ladder pieces(s): . so that the kerbal can crawl continuously: . . ... and keeps going crawling horizontally on ladders. Walking freely on parts high up is generally dangerous as physics tends to break and kerbals tend to go ragdoll for no reason and fall off, or even clip into parts and get ejected at high speeds, explode parts, or straight go pop without any provocation...
  7. . Low volume high level waste is the most suitable for vitrification and deep burial in subduction zones because if you want to drill several kilometers deep, you won't generally be able to dump high volumes down.
  8. . cellular membranes have normally a relatively high potential differential to begin with. gradients within a cell membrane can be as high as 10e8 V/m. so any external disturbance has to be compared to that values.
  9. . I agree that thorium is a better fuel, however, thorium "works" by converting to uranium 233 which can be used in nuclear bombs. It is far more difficult to do so as with plutonium, though. edit:ninja'd
  10. So even you are forced to admit that the "excepionalism" remark was a straw man. And now to the two other remarks. Nobody said here that. So it is knocking down a straw man he himself made. Which is almost trivially true, however, again, no one said that "radiation is generally harmless" so it is again a straw man. So again. Either you will show me that someone here actually said or implied that "there is no radiation danger whatsoever" or "that radiation is generally harmless" or you will have to admit that these are straw men too.
  11. . I think that everyone understands that thermal effects are not linear nor accumulate linearly. Increase tissue temperature by 20°C and you will get burns in matter of seconds. increase the temperature by 0.2°C and keep it like that for years and nothing happens. Boil an egg at 100°C and it will be done in a few minutes. However, no amount of long-term "boiling" it in 10°C water will get the job done ever. . Or, as in your example, jumping from 10 m = serious injury. but 10 x jumping down from 1 m = nothing.
  12. cca 1450 back to orbit cca 400 to ike cca 600 to land cca 600 back to orbit and cca 150 back to duna orbit via aerobraking and circularization, and cca 550 back to kerbin = 3200 to duna orbit and 3750 back to kerbin. So you will, with some luck return to low duna orbit but won't be able to return back to kerbin. I don't see any docking ports on your lander, so sending a fuel tanker is not an option. You might however skip landing and just fly around Ike.
  13. Kerbals on ladders can turn corners only left/right. 90° angle forward/backward is impossible for them. . . . You have to provide them with a continuously angling pathway around the corner ( at least 2 pieces first angled cca 30° the second cca 60° ) like . .
  14. . not at normal signal strengths used in RF communication (or leaking out of a normal microwave oven). If you crank up the intensity to levels where heat damage to tissues can occur, it is another matter of course. but even then, it is the heat that does the damage. not the microwaves.
  15. That is simply not true. Nobody said what rkman implied. If you think I've missed something, then please show me what. Otherwise I will just conclude that you are just angry that I saw straight through someone's demagoguery which you happen to like.
  16. Nobody here said here that all radiation at what ever dose is harmless. Yet he responds like someone did, thus insinuating that we did.
  17. . All you would need is an USB < - >parallel analog IO and plug it through voltage adapters to instrument analog output on one side and actuator/valve control input on the other. You would of course need to know the wiring and what signals you need to send/receive, but that's it. the rest could be done in software.
  18. . What a nasty string of straw men. What is the meaning of such distortion ? nobody said nor implied such things. so why are you making such false accusations ?
  19. maybe it is a vital component of the fermi paradox. radiation, vaccines, modern medicine and technology in general. the more efficient a technology is, the more it becomes target of technophobia. Maybe in the grand scheme of things, it is a vital component keeping sentient beings in check. The more powerful technologies a species develops the more it fears and reviles them thus making a technological civilization a self-limiting condition.
  20. . fist. the wind up is usually much stronger than down on the ground. just a few hundred meters above the ground and the wind can go from almost calm to gale strength. . second, the balloon floats in the air so its relative velocity is zero. And the fuel pellets used in the most common flying lanterns burn much hotter and more stable than candles and stuff, and illuminate the entire surface of the balloon indirectly from inside, hence you will see a bright orange light and no flicker. . third, and most important, buy one and launch it by yourself. you will see.
  21. . Now its an IFO Identified Floating Object
  22. Happy New Year All...
  23. Unless you want to land on some exact spot (like top of a mun arch, bottom of a crater, or near something ), just ignore the camera view and land all by the navball and terrain height indicator.
  24. I recently found an extremely simple way how to do powered landing reliably and efficiently. The surface view of Engineer Redux contains a 'time to impact' indicator. Just keep the craft straight retrograde during the last phase and when the 'time to impact' indicator hits 10 seconds, start your engines and stop throttling up when the indicator stops decreasing. then throttle down/up to keep yourself at 5-10 seconds before impact until you reach the desired landing speed. then switch to maintaining it and you will land swiftly and smoothly. Almost as efficient as pure suicide burn but waaay less risky.
  25. All too often when landing on Duna "main chute deploys in 3...2...1... SNAP ...AAAAAA... BANG !!!"
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