Jump to content


  • Posts

  • Joined

  • Last visited


1,559 Excellent

Profile Information

  • About me
    Conducting comedic FONOPS on fellow Absurdists.

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. @swjr-swis Also notable: The Coriolis effect and the act of trying to fly a straight line on a sphere. If the KSC were exactly on the equator, we’d see fewer perturbations when flying due East or West. If it were at latitude 45 we’d see it much more.
  2. You can click on several types of parts and hit "Control from Here", and it will reference the controls to that direction. A few of the probes and command pods have different axes you can pick from, like Up or Forward. This also works with docking ports.
  3. "Pendulum Rocket Fallacy". Center of Gravity wants to be as high as possible. https://www.wired.com/story/lets-unpack-the-pendulum-rocket-fallacy/ Should be BDArmory
  4. Is your probe core upside-down? Look to see if it's showing brown as up. Fins are far better than reaction wheels. I rarely use more than what's on the payload.
  5. That's the best part! Especially if the guidance and tracking is nominal.
  6. Breadcrumb is a fantastic method. Be aware that all those decouplers and fuel lines (and struts) add dry mass, so it may make sense to use fewer, larger/longer tanks, especially as you get down to the smaller diameters. FLT-T400s are pretty small. Structural complexity/part count can be an issue too. There's also a rule of thumb for mass-efficiency that says for engines with roughly the same efficiency, each stage should have the same amount of dV. This is somewhat broken by the non-serial staging methods, but it's a good guide. You may be best off having your probe stage sitting on top of: A long 1.25m stage with one Terrier (capture) A 2.5m stage with a Poodle, or a Wolfhound if you've got it. (capture) A 3.75m stage with a Rhino. (transfer) Surrounded by 3.75m stacks with Mammoths, Asparagus-ed into the Rhino core. The Rhino and Mammoths all start at launch. You'll probably have a couple of Mammoths +Rhino left in orbit to start the transfer. Add SRBs to fill launch TWR needs, if any. This is the gravity brake that Jimmy mentioned. From the BH dV map, it looks like you want to use Kohm, as I'm guessing it's the biggest moon at Gateway: https://wiki.kerbalspaceprogram.com/wiki/Tutorial:_Gravity_Assist#Gravity_brake https://forum.kerbalspaceprogram.com/index.php?/topic/186643-how-to-plan-a-tylo-gravity-assist/
  7. Efficient staging and/or orbital refueling is your only good answer. One of the most efficient staging methods is called Asparagus, and has the benefit of a reasonably consistent TWR. You can also have multiple stacks of asparagus-staging, arranged in series, to suit the TWR and dV needs of that phase of the mission. https://wiki.kerbalspaceprogram.com/wiki/Asparagus_staging https://forum.kerbalspaceprogram.com/index.php?/topic/68532-staging-methods-overview/ If you really want to get into the weeds, a guide on optimizing multiple stages is on this page: http://www.projectrho.com/public_html/rocket/multistage.php I've built "serially asparagus-staged" LFO rockets that have in excess of 20000 m/s dV, and an average TWR > 1.0. Because when you're trying to circumnavigate the planet at faster than orbital velocity, you have to thrust straight down for extended periods.
  8. I think it's important to note that: If one were to apply the same critiques to the science of economics that one applies to the science of climate change, economics would (IMO) come out looking a lot worse. Points of interest: Ideological motivation of the practitioners. Quality of assumptions made. Quality of data and the size of the error bars on that data. Quality of the methodology, and whether it properly takes into account all external confounding factors. Not attempting to get into politics or economics here, just drawing a parallel as food for thought.
  9. I didn't realize we'd detected ANY rogue planets, much less 70. What a wild time to be alive: https://www.inverse.com/science/largest-group-of-rogue-planets
  10. Take a look at the F-76 listing: https://www.globalsecurity.org/military/systems/ship/systems/fuel-oil.htm EDIT: Looks like there are a few grades of bunker oil. I'm actually not sure now if F-76 qualifies. EDIT 2: The answer is yes for gas turbines: https://www.wartsila.com/energy/learn-more/technical-comparisons/combustion-engine-vs-gas-turbine-fuel-flexibility "Only about 400 GE gas turbines globally operate on crude, naphtha or heavy fuel oils."
  11. Not apropos of this particular thread: Is it possible for us to be less reductive and hyperbolic when discussing serious scientific matters? Or is poop-flinging more entertaining than having serious, good-faith exchanges and learning things?
  • Create New...