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Cirocco

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About Cirocco

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    plain ol' engineer
  1. When you say Co, do you mean carbon monoxide or a Cobalt catalyst? Or something else entirely?
  2. I can't help you much beyond what has already been pointed out, what with english not being my native language, but I just wanted to point out this: This right here (as well as the entire 300 word essay that follows) is why I love the KSP forum-dwellers
  3. Absolutely, it depends on several factors including but not limited to: - the type of catalyst - temperature - time of exposure to the catalyst and therefore, flowrate through the reactor (higher flowrate = less time for the hydrocarbons to react) - hydrogen fraction in the mixture - isomerisation of the molecules you want to crack. Isomerisation means the degree to which the long carbon chains are branched. A hydrocarbon chain can consist of just a bunch of carbons in a line with hydrogens on the edges, but it can also be a line of carbons with a bunch of other lines
  4. My bad, I misremembered and wasn't clear enough in my description: yes, a lot of the reactions are exothermic, but they still need high temperatures to happen at a reasonable rate. Essentially: the reaction produces heat, but it only starts happening at a reasonable rate at high temperatures (200°C and up). So you still need to heat the reactor all the time because even though the reaction is exothermic, you lose heat because you are constantly evacuating the heated products and pushing fresh, "cold" reagents into the reactor. If those reagents are not heated then the reaction slows down
  5. Okay, I just only now discovered this thread (very sad about that btw) so I haven't read everything here, but I believe I can be of service here. Here's why: I graduated about 6 years ago as a catalytic engineer. Half of my education was basically geared towards petrochemistry and my master thesis was about trying to find a suitable catalyst and process to selectively crack long parafins (such as the ones from a FT-reaction) into diesel-length molecules. For those interested: we tried a process where we first tried to isomerize the parafins in the middle by running it over a zeolite (ZSM-
  6. I'm fairly certain this is common practice but I haven't seen it on this thread yet. Similar to what g00bd0g does: put one flag on each side of the runway and name them "runway sea side" and "runway land side" or similar. You can use them to line up properly as well as get an idea of the distance to the runway.
  7. European webcasts are indeed different from american ones. NASA has been televising their launches and operations for a lot longer than ESA, so they have a lot more experience with it. American broadcasts are usually commentated by PR people, ESA more often puts engineers and scientists directly in front of the camera. US broadcasts also tend to give more concise, bite-sized bits of information. ESA wants to say everything correctly and with all the explanations around it, which means it comes across as much more stuffy and forced. It's also a difference in style I suppose but personally,
  8. Hey all, just a thread to let you all know that ExoMars (joint venture of ESA and Roscosmos) is launching today. Launch is scheduled at 9:31 a.m. GMT (which is one hour from posting of this thread). You can watch the webcast here: http://www.esa.int/Our_Activities/Space_Science/ExoMars/Watch_ExoMars_launch arrival on the red planet is scheduled for 2018. cheers, Cirocco just noticed that there's already a thread for this, my bad. Mods, feel free to kill/lock/merge this one.
  9. correct, I wasn't clear enough on my meaning, I meant "edible parts as big as possible", but even that is not entirely right. The most correct would indeed be something along the lines of "most yield". Thanks for the correction. Bioreactors! Oh god such memories to my time at university. Good times, good times... Thanks for that
  10. On the whole mildew debate: while we do indeed breathe bacteria 24/7, I tend to agree with the fact that in a completely closed environment there's a risk of elevated concentrations. People on earth don't live 24/7 in an enclosed area with what are essentially a bunch of incubators. There are a bunch of micro-organisms that are totally harmless in low concentrations might become a problem in higher concentrations. That being said: mildew is a fungus and any airborne fungus could easily be filtered out of the air with high-efficiency particle air filters. I believe there also exist certain cata
  11. Strangely, this is not the first time I've considered martial arts in zero-G. For the sake of argument, I'm assuming that the only factor here that is different from earth-bound martial arts is the gravity. This means the fight is performed indoors, spacesuits are either not worn or sufficiently supple to allow (almost) complete freedom of movement, life support is either not an issue (indoors with the entire room/station under life support) or sufficiently small and fortified to the point that trying to disable it bare-handed is futile and no RCS thrusters or mechanical means of movement are
  12. ah, the old "is X cheating?" question. I refer you to the helpful diagram I use for all these threads: Is X considered cheating in KSP? a handy guide: do you yourself consider X cheating? --------yes-------> X is cheating. --------no--------> X is not cheating.
  13. stage separation success and second ignition is confirmed. Damn That was tense for me...
  14. T minus 1 min. I can't believe I stayed up till 2:30 am for this...
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