Neptune Orbiter, Another proposed mission |
Neptune Orbiter, Another proposed mission |
Nov 10 2005, 03:51 PM
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#101
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Member Group: Members Posts: 509 Joined: 2-July 05 From: Calgary, Alberta Member No.: 426 |
This seems like a good place to start off the Uranus and Neptune forum: with the next ice-giants mission.
I will admit to not knowing a whole lot about the Neptune Orbiter With Probes (NOWP), other than the fact that it's in the planning stages, and a few other details I've gathered from Wikipedia and various other Internet sources. Anyone care to get this one going with a bit more information? |
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Apr 1 2007, 03:54 AM
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#102
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Senior Member Group: Members Posts: 1018 Joined: 29-November 05 From: Seattle, WA, USA Member No.: 590 |
Okay, I figure the best you can do with Triton (short of aerobraking) is lose 0.11 KPS -- hardly worth the candle. The problem is that we're going very fast and it's very small. At most, it can deflect us about 6 degrees.
So coming back to ion drives, I note that one KPS is as good as another. If the ion drive can get you to Neptune's Hill Sphere with a relative velocity of ~4 KPS, you can use a conventional ~300-sec-specific-impulse rocket to do the final orbital insertion. It'll only need to be about 11% of the payload. |
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