Stardust |
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Stardust |
| Guest_Sunspot_* |
 Sep 23 2005, 03:05 PM
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#1
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Looking at the Nasa Watch website http://www.nasawatch.com/, it mentions a flyby of Mars by Stardust
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Sep 23 2005, 03:24 PM
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#2
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Founder  Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Wonder if they'll do any imaging?
As a heads up to Bjorn - img2png doesnt like Stardust imagery - it just goes straight to a buffer overrun  Doug |
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Sep 23 2005, 03:36 PM
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#3
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 Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
The timeline on the website has an Earth Return date of Jan 15, 2006. That can't be correct can it? Mars to Earth in under 4 months?
-------------------- If Occam had heard my theory, things would be very different now.
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Sep 23 2005, 03:44 PM
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#4
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Senior Member Group: Members Posts: 1636 Joined: 9-May 05 From: Lima, Peru Member No.: 385 |
QUOTE (ElkGroveDan @ Sep 23 2005, 10:36 AM) The timeline on the website has an Earth Return date of Jan 15, 2006. That can't be correct can it? Mars to Earth in under 4 months?  It is reasonable. The V-Delta of Earth is higher than the ones of Mars. So the spaceship going to Earth is faster than to Mars since the Earth velocity around the sun is faster than Mars. Rodolfo |
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Sep 23 2005, 03:45 PM
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#5
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 Member Group: Members Posts: 345 Joined: 2-May 05 Member No.: 372 |
QUOTE (ElkGroveDan @ Sep 23 2005, 11:36 AM) The timeline on the website has an Earth Return date of Jan 15, 2006. That can't be correct can it? Mars to Earth in under 4 months? Well, since it is flying by Mars it has a higher velocity than it would if it started from Mars (in which case the aphelion* would just barely touch Mars' orbit). So, I'd say yes, it is probably correct. *Furthest distance from sun. |
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Sep 23 2005, 03:46 PM
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#6
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 Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
QUOTE (RNeuhaus @ Sep 23 2005, 03:44 PM) It is reasonable. The V-Delta of Earth is higher than the ones of Mars. So the spaceship going to Earth is faster than to Mars since the Earth velocity around the sun is faster than Mars. Rodolfo I don't think they will do any imagery. First off, with its stuck filter wheel and the equivalent of a wide angle Cassini camera, I don't think it would see much of scientific interest from a distance. But the stated reason that they passed up a few Annefrank-like flybys (and that I am guessing would apply here too) is that now that it has its samples, it is too risky to take chances with maneuvering it to aim cameras - it isn't worth taking any chances that could lead to the loss of the mission before earth arrival. -------------------- |
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Sep 23 2005, 03:54 PM
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#7
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 Junior Member Group: Members Posts: 90 Joined: 20-April 05 Member No.: 289 |
To take this slightly off topic, I noticed mention that the Aerogel used on stardust was also used on Pathfinder.
http://stardust.jpl.nasa.gov/tech/aerogel.html Does anyone know why? |
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Sep 23 2005, 04:06 PM
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#8
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 Dublin Correspondent Group: Admin Posts: 1799 Joined: 28-March 05 From: Celbridge, Ireland Member No.: 220 |
QUOTE (maycm @ Sep 23 2005, 04:54 PM) To take this slightly off topic, I noticed mention that the Aerogel used on stardust was also used on Pathfinder. http://stardust.jpl.nasa.gov/tech/aerogel.html Does anyone know why? Yep - Insulation on Sojourner. QUOTE Donna Shirley, head of Mars exploration at NASA's Jet Propulsion Laboratory, is quoted by USA today (July 8, 1997), saying "If we'd had to use conventional insulation, the rover would have frozen." Link |
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Sep 23 2005, 07:14 PM
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#9
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 Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
QUOTE (helvick @ Sep 23 2005, 09:06 AM) The MER Warm Electronics Boxes (i.e. the bodies) are also packed with aerogel. Very good insulation! Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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| Guest_BruceMoomaw_* |
Sep 23 2005, 08:10 PM
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#10
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Believe me, this Mars flyby is going to be VERY long range. That chart still allows it to occur at a distance of several million km, and I certainly have never heard a single peep suggesting that they had any observations planned at all.
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Sep 24 2005, 07:26 AM
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#11
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
ElkGroveDan: "The timeline on the website has an Earth Return date of Jan 15, 2006. That can't be correct can it? Mars to Earth in under 4 months? "
Yes. Mariners 6 and 7 made it to Mars in something like 5 months. They were "light" for the Atlas Centaur booster which one opposition later launched the much heavier Mariner 9 orbiter. The excess capacity was used to decrease time to Mars and get an encounter closer to Earth, aiding communications. The 2 vehicles got a mild gravity assist and aphelion was in or at the inner edge of the asteroid belt. Farthest from the sun of a solar powered spacecraft until relatively recently |
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Sep 24 2005, 11:35 AM
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#12
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Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
After SD passes buy for delivery, what's next for this probe? Any more encounters?
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Sep 24 2005, 12:27 PM
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#13
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
QUOTE (Decepticon @ Sep 24 2005, 11:35 AM) After SD passes buy for delivery, what's next for this probe? Any more encounters? I've read that it's basically going to be pretty much out of fuel, the camera's not too great, so it'll probably get switched off. Doug |
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| Guest_BruceMoomaw_* |
Sep 25 2005, 08:14 PM
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#14
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That's what Donald Brownlee told me several years ago -- unfortunately Stardust, unlike Deep Impact, doesn't have an extended warranty...
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Nov 30 2005, 08:33 AM
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#15
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 Member Group: Members Posts: 370 Joined: 12-September 05 From: France Member No.: 495 |
An update about stardust return :
http://www.nasa.gov/centers/ames/research/...e/stardust.html Another one about the opening of the sample canister : http://stardust.jpl.nasa.gov/science/feature002.html It is 46 days from now. Rakhir |
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