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Kryten

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Everything posted by Kryten

  1. Inclination makes no difference to moon transfer orbits except timing, and has minimal effect on Mars transfer.
  2. Depends what you mean by 'four legged dinosaurs'; the ancestral state for dinosaurs is small and bipedal, quadrupediality evolved independently several times. Sauropods were saurischians closely related to Theropods (and thus birds); primitive members of both groups can be difficult to distinguish, and even very derived ones had 'bird-like' features like air-sac breathing systems. Thyreophora (ankylosaurs+stegosaurs) and Ceratopsia (e.g. Triceratops) were Ornithischians, which split from Saurischians shortly after dinosaurs first evolved, but many retained the superficially bird-like ancestral form for a considerable time. Even Ceratopsians were all small and bipedal until the early Cretaceous.
  3. Most of the carbon should convert to acetylene or ethylene, not elemental carbon.
  4. The temperature in the reactor is going to be high enough to cause partial decomposition, the exhaust won't just be pure fuel.
  5. It's simply that probe-and-drogue includes plumbing for fuel connections in the design, while APAS doesn't.
  6. Probe-and-drogue requires less force to properly latch than APAS, and allows for fuel transfer.
  7. Aerojet successfully ground tested a 260 inch (~6.6m) diameter solid stage, intended to replace the entire Saturn I first stage.
  8. ISRO has ~200 ton SRBs as part of GSLV Mk. III, and China have an all-solid launch vehicle and are working on a larger one.
  9. http://en.wikipedia.org/wiki/Nedelin_catastrophe http://www.encyclopediaofarkansas.net/encyclopedia/entry-detail.aspx?entryID=2543 http://www.nytimes.com/1989/09/28/world/1980-soviet-rocket-accident-killed-50.html
  10. Some is extrapolated from other finds, either Stromer's 'Spinosaurus B' from the holotype bed in Egypt or material from Kem Kem in Morocco. Whether either can actually be referred to S. aegypticus is a matter of debate, as is the scaling.
  11. White. Only the bones (now destroyed, but very well figured) marked as the holotype specimen are definitely Spinosaurus, Ibrahim's neotype comes from hundreds of miles away and has few directly comparable elements.
  12. As pointed out mightydarkstar, there were surviving dinosaur groups at that point-and there still are.
  13. I'm not sure how you think that's in any way different from your average space mission.
  14. Elon says it's in pieces. See the post above yours.
  15. Boostback is the burn to aim at the landing barge.
  16. This is an instantaneous launch window. If there's any hold at all, back it goes.
  17. Depends which 'government space program' you're talking about. The Russian one puts up huge numbers of government communications and national security sats while barely being able to hold onto the engineers that it has, and the Chinese and Indian does the same while bringing in considerable foreign revenue. Even most US launches are various applied government sats-weather, GPS, recon, et.c. Also, remember that the 'space industry' is far bigger than the space launch industry. Satellite manufacturers, operators and insurers are mostly not government subsidised, and are often extremely profitable.
  18. Kerolox stages tend to have much more visible plumes at high altitude than hydrolox ones. Soyuz in particular is infamous for creating 'jellyfish' UFO sightings whenever it has upper stage flight over a populated area.
  19. In theory yes, but in practice it's more than any nation is willing to spend on an uncrewed mission in the current climate.
  20. ATV docks because a large part of it's function is fuel transfer, and only the Russian docking ports are plumbed up for that, whereas HTV does actually berth.
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