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DAL59

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Everything posted by DAL59

  1. SpaceX has been doing very well recently. Elon Musk says that he is personally intent on this though. He also has 19 billion dollars of his own money to spend.
  2. [citation needed] It is important to distinguish between constant radiation from the sun(blockable by fuel tanks or just plain water), radiation from GCRs(practically unblockable, LEO just blocks half due to occlusion of sky by the Earth), and solar storms(you can have a small storm shelter). The radiation from GCRs wouldn't change whether you are going to Mars or Venus. In fact, GCR would be less due to shorter transit time.
  3. Why? Nowadays there are more private space companies, and cost per pound to orbit has dropped significantly. rockets this big have actually been studied Aldeberan Nuclear Spaceplane- 30,000 tons to orbit also http://www.jhuapl.edu/techdigest/TD/td2703/mcNutt.pdf page 270
  4. NASA did a study that found that a mission to Callisto by 2050 is very possible and fits well with their current budget https://www.yumpu.com/en/document/view/10254128/revolutionary-concepts-for-human-outer-planet-exploration-hope-/3
  5. The dense Venusian air actually results in less radiation in the Venusian upper atmosphere than on the Martian surface. There's also plenty of solar power for active shielding. ISS tours are about the same length as a mission to Mars/Venus airship would be. The astronauts take a while to get back to peak physical strength, but they don't die upon return. On Mars, the recovery would be much easier, given the low gravity. Especially with the faster transit times offered by the ITS, artificial gravity en route is not necessary at all. ITS with orbital refueling
  6. Neither exist on a venusian airship.
  7. n: Earth (equatorial) Mars (median / Curiosity) Moon (equatorial) Small solar system bodies Venus (54.5km, 70° latitude) Gravity (g) 1 0.38 0.17 Very low 0.9 Air pressure (atm) 1 0.006 0 0 0.5 Day temp. (avg., °C) 25 -40 -25 Usually low 25 Diurnal variation (°C) 8-15 90 300 Very high 15 Day length (h) 24 24.5 336 Widely varied 48 Local mobility Moderate Low Low High High Radiation shielding, meters of water mass equivalent 10.3 0.06 0 0 5.3 Magnetic field 25-65 μT, intrinsic Weak, induced; 20-40 nT MPR, 5-20nT magnetosheath None None Weak, induced; 40-80 nT MPR, 10-40nT magnetosheath Health hazards Those which humans evolved to Fine, abrasive dust / silicosis; perchlorates; chromium(VI) Highly abrasive dust / silicosis Highly abrasive dust / silicosis Corrosive acid mists; numerous known and theorized chemicals Other local hazards Those which humans evolved to Marsquakes; landslides; dust storms; solar storms. Others? Moonquakes; landslides; solar storms. Others? Solar storms. Outgassing? Landslides? Poorly quantified. Lightning? Gusts / shear? Icing? Storms? Limited data. Planetary protection Not applicable Category IV Category II Category I to II Category II Delta-V to destination, from LEO (km/s) 0 4.5 6.1 As low as 3.8, but usually well more 3.5 Delta-V to LEO (km/s) 10.1 5.9 5.6 Low to extremely low 11.8 Transit time (mo) 0 9 0.1 Widely varied 5 Launch window frequency (mo) 0 25 Several days per month Widely varied 19 Aerobraking Available Available Absent Absent Available Parachute decel. Significant Limited Absent Absent Significant Surface hazards Present Present Present Present Not approached Peak solar energy (29% triple junction W/m²) 290 ~50, up to 129; sometimes almost none 400 (but two weeks w/o light) Widely varied 500 Wind energy resources Moderate Effectively none None None High (tethered turbine) Diversity of resources Baseline Probably moderate to low Probably low Low Probably high, but arid Valuable resources Moderate Probably moderate to low Moderate to low High Probably high Accessibility of resources Moderate Moderate Moderate High but hindered by microgravity High atmospheric, low surface Details of the above graphic can be found in Rethinking Our Sister Planet: A Handbook For The Development Of Venus, ch. 1.
  8. Due to the lack of seas, the planets have the same area. The ITS will take less than 6 months to get to Mars. 9.5 months is only for the worst possible transit with the lowest fuel. Also, the fuel tanks of the ITS will be more than enough for solar radiation protection, plus an additional shelter was shown in the new design. not for several million years. By then it would be dissembled to make new spacecraft. The south pole has 6 months of darkness, so you can't grow food there. Mars has a 24 hour day, so you can grow food. Mars also feels warmer than Antarctica, because the air is too thin to wick away heat. #nukethepoles
  9. If anyone is interested, this is still active, and there are plenty of missions left.
  10. I sent a Duna science ship with 3 kerbals to orbit Duna, with a landing module for Ike. I had insufficient delta-vee to return to Kerbin. However, the ike lander could take one kerbal, and all the science, back to kerbin orbit. So...should I take the little amount of science and save one kerbal, or land on Ike, get more science, and then be unable to return? I chose the Ike landing, and now I have three kerbals stuck around Duna. At least they aren't on the surface. I think I failed because I put oxidizer in the nuclear power mothership.
  11. The self-sufficiency(on Mars, at least) could actually be achieved in a few years, especially considering advances in 3-d printing and robotics. Water is easily obtained through underground glaciers, oxygen through water, the soil has been proven to grow food, the soil could be made into bricks, and if there were missing metals, there are 2 asteroid moons. Venus would likely never become self sufficient, though it would be good for agriculture.
  12. You can always just make a new copy, since ksp is non-drm.
  13. good point. Especially since you can set your throttle limiter before hand. Thank you for telling me this!
  14. That setting does not allow you to actually fly your probe during occlusions. It just means that you can extend solar panels and antenna and take readings during occlusions. You still cannot throttle or turn.
  15. Virtual reality would also be perfect for use in the VAB.
  16. My ascent profile consists of doing a backflip at 30 km before burning up again...
  17. @regexYour reputation is now 9001...resists non-ksp pun...same as the sc-9001 science jr.
  18. Small communications satellite launched to LKO. Part of my Dmagic/spacey/usi/mostly stockalike career. The rocket, like Goddard's first rocket, was like a pendulum, with thud engines and asparagus staging. Rocket on ascent, first pair of droptanks already jettisoned. Unfortunately, the periapsis ended up being 20km.
  19. Use an expendable first stage, reusable second. Make toroidal aerospike second stage, with airbrakes and rcs, and use 7 hammers for stage 1.
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