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raxo2222

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  1. raxo2222
    Ah okay. Can you make "Infinite Propellant" cheat more useful? That is with it any engine can use any propellant, that it can use even if it isn't currently present on ship. So basically this cheat would replace need to have all in one fuel tank. It would be very useful for testing.
  2. raxo2222
    @FreeThinker Can Antimatter Initiated Fusion reactor use positrons as alternate of antimatter?
  3. raxo2222
    I reported multiple times, that smallest thermal engine with weakest reactor overheats easily and normal sized thermal nozzle with stronger reactor doesn't overheat, when engine is without precooler and slowly moving.
  4. raxo2222
    Something flipped around - I meant it uses more antimatter than hydrogen. I used division by 10 of dynamic pressure to simulate that radiators are almost always almost parallel to wind. That is they move like wing not parachute.
  5. raxo2222
    Well this resource could be unlocked in same tech node as warp drive. By the way positron reactor is 2 - 3 times more energy dense than QSR.
  6. raxo2222
    Some not yet discovered physics, that makes QSR, mach effect and warp drive work.
  7. raxo2222
    On wikipedia dynamic pressure is density [kg/m^3] * speed squared (m/s)^2 and divided by two. 1/2 * density*speed^2 I used density of 1 - speed would be around 450 m/s on sea level. Both stock and FAR should use this equation for dynamic pressure. I wanted to divide dynamic pressure because radiators most of time are almost parallel that is up to 15 degrees to air flow. --------- radiators <--------------------incoming air (slightly angled most of time) Only during reentry radiator would be placed like this: \ <----------------- Air
  8. raxo2222
    So it would be like this? oxidationModifier = Math.Sqrt(vessel.staticPressurekPa + vessel.dynamicPressurekPa/10) /10 ?
  9. raxo2222
    I think you misread something - I meant dynamic pressure divided by 10 + static pressure, not whole thing divided by 10 when calculating max temp of radiator. oxidationModifier = Math.Sqrt(vessel.staticPressurekPa + vessel.dynamicPressurekPa) / 10; should be oxidationModifier = Math.Sqrt(vessel.staticPressurekPa + vessel.dynamicPressurekPa/ 10); @FreeThinker
  10. raxo2222
    Lets have neutron star or white dwarf. Then we dump antimatter on it - for example 0.1% of that star mass per year or per day in continuous stream. Antimatter crashes on surface emitting charged particles, that may or not may get trapped and gamma rays, that easily escape. This means mass drops very slowly. Will these stars will eventually puff up and be normal gas giants? Or these stars will simply explode after dropping below certain mass?
  11. raxo2222
    Antimatter Initiated Fusion reactor is good too - it has highest power density of all reactors not counting QSR/pure antimatter without and with builtin engine at given radius. You can use diamagnetic antimatter container as way to store positrons. 2.5m can store 106 kg of antimatter that is 57g of positrons. Can I use antimtter reactor to make positrons? 106 kg of antiproton isn't too useful in that case :p Or those antiprotons can be used for magnetic nozzle :p Magnetic nozzle is so efficient that is uses more hydrogen than antimatter :p
  12. raxo2222
    Now you can check for mistakes in other places :p Is there any difference in thrust if I use plasma nozzle or thermal nozzle?
  13. raxo2222
    I guess it was changed after all.
  14. raxo2222
    If it wasn't changed then it was 0.7x - 0.75x of Hydrogen ISP.
  15. raxo2222
    Thermal engines seemed to have highest thrust and DV in same volume with Hydrazine. Since electric engines will get thrust boost with some techs, will ARCJET engine get thrust boost too? Its most compact way to have hovercraft, but it produces ton of wasteheat.
  16. raxo2222
    It would be nice to have list of all propellants, that engines can use and their multipliers on efficiency, thrust and ISP.
  17. raxo2222
    It should be independent from actual max temperature of graphene radiator, that is at given pressure max radiator temperature would be always X kelvins. Or is it already case? That is at certain pressure max radiator temperature is 2000 K and at other pressure max radiator temperature is 3000 K no matter what heat upgrades radiator has? By the way dynamic pressure should be taken in account too. For ease it could be simply divided by some value (or be dependent on angle of attack of radiator) and added to static pressure. It would be something like total pressure = static pressure + dynamic pressure/10 (or possibly include angle of attack of whole space ship/single radiators too)
  18. raxo2222
    So I guess there is point where MHD is better than having both charged/thermal generators. There should be way to find if in given situation you are better of with MHD or with Thermal/Charged combo. Isn't max temp for graphene radiators raising too fast? There still is substantial atmosphere at this altitude.
  19. raxo2222
    I meant what ratio of thermal energy to charged particles is best for MHD.
  20. raxo2222
    What charged particle energy percentage is best for MHD? 50%?
  21. raxo2222
    So lower propellant efficiency means lower power consumption? Why is that? Can't power consumption be constant and just lower thrust when propellant efficiency is lower?
  22. raxo2222
    Then it has confusing maximum power consumption entry. Well that is happening with other engines - they will use different amount of power with different propellants at given thermal efficiency. VASMIR will consume less power at 100% than at 10%, as at 100% is ~30% efficient and at 10% it has 66% propellant efficiency.
  23. raxo2222
    So can I use remaining charged particle potential for MHD? If I get two generators, then how I can use plasma engine? Its directly connected to reactor. Why Mach Effect drive doesn't use full potential of reactor? At its size it should use up to 50 GW of power. Thermal efficiency is ~90% here. Maybe propellant efficiency shouldn't reduce maximum power usage? That is propellant efficiency doesn't reduce thrust directly, but it reduces power usage. That happens with all electrical engines.
  24. raxo2222
    I meant that if gas after contact with reactor side heat exchanger is as hot as radiators can handle, then further temperature increase might melt compressor. I was saying, that spacecraft could be coated with graphene or other high temperature resistant materials - that was example for use of graphene. Hmm thats why radiators can heat up so fast if you don't put enough of them. That is much faster they heat up to 2000K than they heat up to 4400 K as max :p
  25. raxo2222
    What liquids would be best in first and third loop? And what could stay liquid from 0 K to 4400 K as this is operating range of fully upgraded radiator? That thing should be highly conductive and easily meltable when solid, as reactor and working gas between heat exchangers heats it up. That is reactor would be at low power, when it melts working liquid in third loop. Also pressure would rapidly increase when it starts to boil at very high temperatures - that is when heated up by compressed gas, that is at 4400 K (running as hot as possible). I guess compressor doesn't have to do anything if incoming gas is already at max radiator temp. By the way is it possible to use magnetic fields to deflect reentry plasma or to coat spaceship with graphene, so parts would easily resist even harsh reentry into gas giant? Or that you could put your solar wind collector within 10 solar radius (effectively 9 solar radius when it comes to heat flux in KSP from stars). How fission reactors can set their output to 0 if normally they have minimum power output? This happens if cold bath temperature gets too close to hot bath temperature.
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