Foxster

Members
  • Content Count

    3,283
  • Joined

  • Last visited

Everything posted by Foxster

  1. My point is not whether it's possible but whether it's useful. The OP wanted to do some stuff on the surface of Eve and return. For that there are better option than an SSTO.
  2. Two things: 1. SSTOs are not really practical for Eve. They are so borderline that they are usually impractical for anything other than bragging rights. 2. dV figures for surface to orbit on Eve are mostly useless. You can build a massive craft with much more than the listed dV required that will never make orbit due to the very high drag of every part in Eve's atmosphere. Plus the poor isp of most engines there means achieving the listed dV is even harder. Your best bet will remain using a more conventional rocket and abandoning everything but the crew on the surface.
  3. Another lateral solution here is to not take such a big craft that requires all those heatshields. Have a look at other player's craft for Eve. One big thing is that drag is most important in Eve's souposphere. By making your craft with slimmer/smaller tanks & engines you will greatly reduce drag and still be able to make orbit even though the indicated dV of the craft is less.
  4. If anyone would like to try this craft then the complete mission craft (including lifter and transfer stage) is here: https://www.dropbox.com/s/sas721xlp2ptqwp/New Mun 3.craft?dl=0 The final stage fuel tanks are turned off to stop the fuel-cells using them. Remember to turn them back on before lifting off the Mun. It's for a quasi-Apollo mission.
  5. You just need lots of drag at the back. Whatever you fancy of: An inflating heat shield, lots of air brakes (could be a 20+), or several wing pieces perpendicular to the direction of travel...
  6. Just leave them there to die. Plenty more where they came from and no one will mourn them.
  7. One way around that is to put a capsule of some kind on the bottom of the craft. Transfer the crew in and out of that to the main capsule at the top of the craft. Dump it before lifting off.
  8. I'm guessing that even though you have an even distribution of fuel tanks they aren't being used evenly and so the CoM shifts. Check out the fuel priority setting for the tanks and make sure that it is set the same for symmetrically mounted tanks.
  9. I'll see if I can find a craft later to post but one thing to consider up front is the choice of capsule. Drag is the king of Eve and so you want the lightest and slimmest crew accommodation. A mk1 capsule plus a mk1 crew cabin is good. Or you could even consider three command seats in a mk1 fairing. Don't take anything to orbit that is non-essential. So dump experiments, chutes, solar panels, ladders, etc before lifting off. Don't plan on a docking in orbit because that requires extra stuff. Have a mothership rendezvous with your craft and EVA over the crew for the return journey to Kerbin.
  10. I'd say there is just too much mass hanging off a few decouplers. Its a very draggy craft and when the atmos gets real thick I think it's just pulling itself apart. That craft could be a fraction of the size if you did some proper streamlining. At the moment you are throwing huge amounts of dV away to drag. Drag being the no.1 consideration for an Eve ascent craft. It would be OK for Kerbin's thinner atmosphere but not for Eve. You need a few thin stacks, not the dozen of fat, non-tapered ones you have.
  11. That would be zero then as the correct term is 'sand grains'.
  12. Couple o' things... Launching the spacecraft from the top of the airplane lifter seems to work best as it tends to avoid them crashing together after separation. Try killing all engines just before separation - can help avoid collisions. You may have to sacrifice the lifter because you won't be able to control it whilst getting the spacecraft to orbit. You may find it actually easier to have a vertical launch craft with a jet-powered first stage at the back end or as side boosters.
  13. 1. Make it smaller or 2. Make it in parts, launch them, assemble in orbit. You know, like they really do 3. Use the cheat menu to set it into orbit
  14. I leave the ugly green gnomes to their fate. They knew what they were getting into when they took the job. I don't even delete the craft in the tracking station. If they wanted to get home they should have got gud at driving spaceships.
  15. Except they don't reduce drag for those parts, so what you are doing is only cosmetic.
  16. A simple way to get a booster to peel away is to mount the decoupler closer to the top than the middle - say 2/3 or 3/4 of the way up the booster. This tends to throw the top out on separation and the booster clears the craft's main body. You can place the decoupler, attach the booster, translate the decoupler up and then the booster back down. Oh and you will almost certainly then need a strut at the bottom.
  17. Generally, if you radially attach something then it has the full drag of the part. If you attach it in-line to a similar-sized part then the drag is reduced - and it makes no difference if you then translate it away with the offset tool - as long as don't rotate it.
  18. Also confirmed. Making a fairing root increased the atmospheric drag of a test craft at 5km from 1.61m/s to 2.66m/s (according to MJ) and the craft achieved a lower altitude before using all the fuel. https://imgur.com/EyNl9zp Obvious workaround is to not make a fairing the root part - not sure why you'd want to in the first place.
  19. I personally find docking tiresome. It's not like anyone in real life would do it without computer aid these days. So if you too find it tedious then I recommend MechJeb's docking tool.
  20. Couple of things... As said above, drag is the important thing on Eve. You can get that payload to orbit with a fraction of that craft if you eliminate most of the drag. It is also likely what is making your craft flip because there is so much at the front end. Put absolutely everything not associated with getting to orbit on decouplers and dump before taking off - solar panels, radiators, chutes, air brakes, landing gear, etc. Also get rid of of the docking port on the nose - that alone could be causing the tipping and will be robbing the craft of a LOT of dV. Then start taking stuff away. You don't need reaction wheels, a mammoth engine, RCS, antennas and, in fact, most of the tanks and engines. All that having a lot of craft does on Eve is generate drag, requiring more craft to compensate and you end up with a behemoth to get a tiny payload to space. Oh and have some steerable fins at the back end but only as many as you absolutely need.