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About paul23

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    Spacecraft Engineer

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  1. There is hardly any reason not not go oxygen-hydrogen unless you take many more complex situations into account. (like being able to store the liquid, on earth). Hydrazine would never ever be used if it didn't need to be used, it has worse chemical efficiency per mass is highly toxic and hard to handle. Then there's the corrosiveness and hence the choice of metals that depend on the fuel. Or how do you model the toxic disadvantages for the environment in a fuel? If this is then reduced to "you can have fuel xyz with engine abc, and other fuel with other engine", where each engine can have
  2. The altitude difference between mountains and flat area is really minimal in regards for landing: if you crash on mountains you'll crash on sea level too. Mountains just make you tumble over easier.
  3. shielded ports also greatly reduce lag, when the shield is closed they act as if they are disabled.
  4. I hade a lander fully landed in water once, then before recovering I went back to base for some reason. When I reloaded the craft, it apparently started "sinking into the water" and went through too high speed submerging, making the tank and consequent lander above it go "poof".
  5. Hey I wonder if I can ask a question about syntax here? - can I "repeat" a part of the configuration "for each element in a list", or in other words: use an iterator inside a behaviour node? Currently I have a (working) solution that is like: BEHAVIOUR { type = ChangeKerbalType onState = CONTRACT_COMPLETED KERBAL_INFO { kerbal = @/candidates.ElementAt(0) trait = @/candidate_traits.Random() kerbalType = Crew } KERBAL_INFO { kerbal = @/candidates.ElementAt(1)
  6. Actually greenhouse gasses keep a planet warm, without those earth (and other planets) would be frozen over: so it's perfectly normal, just like the average temperature on the moon is also around -70 degrees.
  7. Hmm I wonder: is there a converter to allow me to enable editing like it's stackexchange/github? To convert markdown to forum posts, and also vice versa? Especially the editing is abysmal.
  8. I have a real aversion to things like wormholes and warp drives: mainly because it removes a core function from the game: the orbital mechanics. When you travel faster than light gravity can no longer be an influential factor. As such the whole idea of "orbits" is removed from the game, and you can almost travel in a straight line. Even if relativity is not taken into account. "near future" things like orion engine, or vasimir and solar sails (infinite specific impulse for a solar sail) would be perfectly fine with me: they have theoretical roots and do not violate physical laws.
  9. My biggest gripe, apart from what mods like far/kopernicus fix, is the fact that ksp considers kerbal a perfect sphere. Being an oblated sphere adds a lot of fun to the mix, from having to do station keeping, so actually using it to change argument of periapsis "for free".
  10. Where did I do that? I am not talking about the trajectory at all, I'm just outlining a baseline for calculations. You are the one making a statement, so the burden of proof falls upon you. Again I'm not talking about a straight line. Though I'm considering a simple trajectory where you always fire prograde, but instead of lowering thrust to make a "gravity turn" you turn just like doing a hohman transfer. Indeed I am. However as the vacuum specific impulse is not that much higher than the sea level impulse. Combined with the fact that the more simple proposal, of just firing
  11. I work a lot with code, and most of my posts will be things like codeboxes and other ways to have monospace text - or mathematical notation. When we joined this forum I clearly remember no rich editor being in place. So the code should still be there, and it must be just a way to undo some kind of update to the forum software.
  12. That's captured by the `M0/Mf`, starting mass over the final mass component: heavier engines will give a smaller fuel fraction. If fuel burns "less efficient at low altitude" is the driving force the best solution would be to go perfectly vertical and then once you are at sufficient altitude do a turn. however this is not a gravity turn at which you minimize offset between prograde and gravity. It would be a much sharper turn, and unless you come up with some form of calculation or test I cannot verify such statements. What? This is just repurposed bovine waste, the direction ha
  13. Well quite often when I try to insert text I accidentally forgot to remove the formatting of the pasted text. Thus I have weird formatting in posts. Then if I wish to later edit it I have to find everywhere in the buttonbar (using mouse, tabs apparently don't work, this is silly) what format is where. On top of that some things cannot be edited anymore (anything between [code] tags). The most annoying this is when trying to insert a hyperlink. In some way the forum always makes a pasted link a hyperlink. Thus you get a lot of text that looks like: [url=https://www.google.com]search e
  14. I'm using the tourism plus contract pack. This contract has a mission "space camp" which gives new kerbals. I wonder, can I modify this mission to give "random traits" to the new kerbals, instead of always 1 pilot, 1 scientist and 1 engineer? I tried creating a module manager patch but am wondering if it will actually work: @CONTRACT_TYPE[Tourism_SpaceCamp]:AFTER[ContractPacks]:NEEDS[UmbraSpaceIndustries] { -BEHAVIOUR:HAS[#type[ChangeKerbalType]] {} BEHAVIOUR { type = ChangeKerbalType onState = CONTRACT_COMPLETED KERBAL_INF
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