Mission To Sedna, space mission to sedna |
Mission To Sedna, space mission to sedna |
Jan 14 2008, 10:28 PM
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#16
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
There are some more details (and numbers for Ulysses) here: http://www.niac.usra.edu/files/library/mee...0/393McNutt.pdf A 15.4 km/s burn within 15 minutes. Well, that's optimistic to say the least. Currently, you could have either 15 km/s or a 15 minute short burn, but not both. The only thing I can think of right now is a massive (and we're really talking about a MASSIVE) ion engine powered by god knows what. Massive solar arrays lofted all the way to Jupiter to be able to provide enough juice for the 15 minutes of hellish perihelion passage at 4 solar radii? We'll be seeing nuclear reactors in space probes sooner than this, IMHO. -------------------- |
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Jan 14 2008, 10:45 PM
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#17
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
At least solar radiation would not be in short supply at 4 solar radii. I think that, if anywhere, is where the energy would come from.
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Jan 14 2008, 11:01 PM
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#18
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
True, but one has to think about how hot the semiconductors in the solar panels can get before dying on you. A quick, back of the envelope calculation gives 64 megawatts of solar radiation per square meter at 4 solar radii. That's running a tad hot.
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Jan 25 2022, 08:13 AM
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#19
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Member Group: Members Posts: 255 Joined: 28-October 12 Member No.: 6732 |
Recently, IKI researchers have analysed possible flight trajectories to Sedna for launch in 2029–2034.
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Jan 29 2022, 03:10 PM
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#20
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Member Group: Members Posts: 242 Joined: 13-October 09 From: Olympus Mons Member No.: 4972 |
I like the Neptune flyby one. It gives us an excuse to revisit Neptune along the way while the planets northern summer is beginning allowing mapping of Triton's northern hemisphere. Perhaps we could throw in an imaging encounter with one of the inner moons of Neptune too. Two birds with one stone.
-------------------- "Thats no moon... IT'S A TRAP!"
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Jan 29 2022, 10:59 PM
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#21
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Member Group: Members Posts: 251 Joined: 14-January 22 Member No.: 9140 |
2050 would be about equinox on Triton and would allow mapping of a lot of unseen territory, but note that Neptune's seasons are not the same as Triton's seasons.
https://www.researchgate.net/figure/Variati..._fig1_355707178 |
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