*GETTING THERE*
Getting there with g-force acceleration requires special profile. | ||||||||||||||||||||
GETTING THERE: Gotta speed up for first half of flight then slowdown for 2nd half. GETTING BACK: |
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13. To Uranus Since Uranus has the lowest escape velocity of the four gas giants, it might be the optimal mining site for He3. Mining operations would require a mix of artificial intelligence and human activity. The most practical method to settle humans near Uranus might involve habitats as described by Dr. O'Neill, in his book, High Frontier. Such structures could be manufactured in a near Earth, Solar Orbit, then moved to orbit Uranus in its system of moons and rings. These habitats could be very comfortable:
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Commerical Enterprise(s) Many asteroids and many comets significant source of resources for extraterrestrial environments. "What's found in space, is used in space.." makes a lot of sense when you consider that Terran needs its resources plus exporting Terran resources means significant "lift off" costs. Commerical Enterprise(s) Don't know! It's a long way to Oort Cloud. It's a necessary step to interstellar, but it's a big step.
15. Exoplanetary
Beyond Kuiper Belt, a space vessel transitions into the vast exoplanetary space beyond the planets but well short of leaving the Solar System (1 year of g-force acceleration takes us less than half way to the Oort Cloud).
a. Why go exoplanetary?? Oort Cloud has billions of comets with numerous megatonnes of frozen fluids needed for space travel. Space requirements are best satisfied by space resources.
b. Propulsion System. Thought experiment assumes ship's propulsion system to be a particle accelerator which uses powerful magnets to manipulate plasma streams.
c. Inflight Velocity. To consider relativity, recompute velocities as percentages of c, light speed. Use exponentials to compute exoplanetary velocities.
d(t) = ct + | v(t) ln(1-Δ) |
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