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  1. Have you left kerbals to rot somewere

    I don't leave Kerbals behind. Although, I have to admit that Jeb et. al. decided that staying on Duna for just 30 days was too short and consequently extended their trip a bit..
  2. What do kerbals do with their dead?

    Kerbals are partially made out of antimatter. Death is nothing else than a loss of containment as they simply observe the Einsteinian euquation E=mc**2. The small release of energy proves that c is different in the Kerbin universe....
  3. KSP Weekly: The Neutron Star Merger

    So yeah Monday was exciting as it could be. Having a certain scientific background, here's some additional information. The detection paper is publically available at PRL as are all GW (gravitational wave) detection papers so far: PRL 119, 161101, 'GW170817: GW170817, PRL 119, 161101 The intro text says the GRB (gamma ray burst) came 7s after the GW signal. According to the paper it was 1.7s. The alert wasn't sent immediately but after the LVC (LIGO VIRGO Cooperation) received the GRB notification. When that notification was checked with GW triggers and a possible detection was seen a process within the LVC started which saw the release of yet another notification about an hour later. When the location data was available about 4-5h post event, a new, updated notification was sent. About half a day after the event, some telescope detected a 'new dot in the sky'. The text says the signal lasted for about 100s. This needs some clarification. The sensitivity of a GW detector is a complex function of detection frequency which is dominated by various sources of noise. If we talk about the signal length, we need to keep in mind, that we are talking about the length the signal was observable in our detectors. That was about a hundred secinds. That said, LIGO published data featuring 2048s in length (after noise substraction) See here. Pinning the source down on the sky took several hours since one of the Ligo detectors suffered a glitch and Virgo suffered data transmission problems if I remember correctly. MMany of the GW170817 related papers are available at PRL, go have read ; )
  4. What did you do in KSP today?

    While my carrier is still carrying out its refuelling operations, Kerbin, Sol and the Mun just rose above the eastern horizon of the flats...
  5. KSP Age Groups?

    There are 60+ year old Counter Strike gamers. There's an article on a German newspaper about a 78-year-old dude - they call them Silver Gamers.
  6. KSP Age Groups?

    No idea what these age groups are good for. School may last 9 to 13 years, depending on your residence and education. College doesn't exist in most countries and what to vote for people aged 18-24 not in college? Then 25-40? Seriously? What do have CEOs and grad students in common? Also the varying size of those groups doesn't really allow for interesting conclusions.
  7. Mun Travel

    If you plan to visit all biomes with something else than electric power, you'll need ISRU equipment on the Mun. You could build a base that processes fuel and hop forth and back to base to fill up again. Or you could carry your ISRU equipment with your vessel, which might become problematic due to Ore distribution. Depending on how complex you want to make the entire enterprise, you could build an orbital base as well which serves as a hub and fuel storage for crew rotation and whatever.
  8. What did you do in KSP today?

    Today, I landed my carrier next to the Minmus base. I didn't realize the carrier would scale the base and the vessels parked next to it... With all those parts in one place, I forced my timer into the solid yellow regime revealing some slide-show effects.
  9. KSP Stock Engines

    It basically says, the RAPIER is an efficient jet engine with a much too high TWR...also the RV-105 RCS block is horrible... Yes, sure you can have that....here we go. Don't use Ions. They have a high cost to thrust (CTR) ratio. The Ion engine gives you 4200s for 3 funds/Newton. The Rapier gives you 305s for just 0.03 funds per Newton. Also, SRBs are cheap in terms of CTR. All plots - including zooms into the LF area - can be found here: https://postimg.org/gallery/2jtaoyvl2/
  10. KSP Stock Engines

    Rocket design needs to take into account two stages of usage: Launch to orbit and travel in vacuum. During your interplanetary travels, you want to have a high Isp with low engine mass to increase your dV. During launch to orbit, you can sacrifice a some m/s of dV as you can stage away the unused mass during ascent, but you want to have high thrust with low engine weight to get of the pad. The mammoth weighs 15t and gives you 4MN of thrust, the Isp is 315s. That's roughly 266 N/kg and 21 s/t. The Reliant comes at 192 N/kg and 248s/t. The Terrier gets 240N/kg and 690s/t. So comparing those three engines, the Mammoth would be a good lifter to orbit but a horrible engine in vacuum. The Terrier is nice for travel in space, however. When doing spaceplanes, you can't just throw stuff away as you like, so you need engine combinations that work well. That's one of the reasons for the popularity of the RAPIER since it is basically two engines combined to one part, meaning you save some engine weight.
  11. KSP Stock Engines

    For some reason, I felt like plotting the Thrust of KSP engines vs their specific impuls. It is basically a table of "How efficient is the boom you selected?" Nothing surprising, but I figured, somebody might be interested in it, nonetheless... Except for Jet engines all values are vacuum data. Jet engines feature highest thrust possible. RAPIER and Panther come with one entry for each mode. Pay attention for the double logarithmic scale, though. The plot can be split in four regions. In the top left you do have the Liquid and Solid fuel engines. They come with various amounts of thrust at Impulses up to 340s. In the bottom left, you have the RCS thrusters - low thrust and low impulse. The top right, that's the Jet engines - unfortunately you cannot use them in vacuum. In the bottom right you do have the Ion engine. I am not really sure weather it is a Jet engine without thrust or an efficient RCS thruster. Reading stories of hour long injection burn times, I come to believe it was intended as an RCS thruster... And a zoom into the liquid fuel engines in the top left corner. The conclusion you ask? I guess, I should implement price and weight in a future plot. But unless I figure how to present 5-dimensional data in a meaningful way, I am kind of stuck, I guess...
  12. I think filled Ore tanks have a higher density than water...
  13. For some reason, jet engines and air intakes seem to work perfectly below see level....
  14. KSP Weekly: Trekking the Stars

    Wait, now that you mentioned it, I bet somebody is already working on that one... Yeah, I know but it isn't stock, though. That means @SQUAD's Kerbals won't join the Federation, while everybody's Kerbals who already developed that drive might join sooner or later...
  15. KSP Lacks Lead, Senior and Junior Developers

    The number of job openings and the time they're advertised tells you something about a company. Many openings per employee usually points to high fluctuation in the company. People aren't happy with something or do have limited contracts. Long periods of advertising means, they don't employ the people they are looking for, because they don't employ anybody at the moment but do not want to appear that way, or maybe they don't offer enough, or they could simply be looking for someone who doesn't exist. In this case, however, I think it is more of a 'we have all we need but maybe an amazing employee contacts us, so we should have some openings available'...