Hayabusa - The Return To Earth, The voyage home |
Hayabusa - The Return To Earth, The voyage home |
Dec 14 2005, 06:25 PM
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#61
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Senior Member Group: Members Posts: 1636 Joined: 9-May 05 From: Lima, Peru Member No.: 385 |
Indeed yes, but we are still with diaper in space robotic technology. For Hayabusa, it would be much easier by releasing its outside canister but for Nozomi's case is not possible since it was not designed to release anything. I think so
Rodolfo |
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Dec 14 2005, 07:11 PM
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#62
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
QUOTE (djellison @ Dec 14 2005, 01:16 PM) It'd be cheaper, and the results would be better to just bolt on instruments to another spacecraft rather than trying to rescue another one Doug But Nozomi and Mariner 9 contain data on Mars at a particular time and place that cannot be repeated again. Plus it would be so cool! And it would be good training for recovering future space probes, both ancient and modern. Some day archaeological expeditions will be sent to recover and study old spacecraft to see what has become of them. -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Dec 14 2005, 08:30 PM
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#63
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Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
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Dec 14 2005, 08:42 PM
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#64
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
Science/Astronomy:
* Asteroid Probe Yields Insight For Planetary Defense http://www.space.com/businesstechnology/05...r_hayabusa.html Following roughly two months of notable operations at asteroid Itokawa, Japan's Hayabusa probe is damaged goods. Hindered by thruster and gyroscope breakdowns, the spacecraft is under makeshift attitude control with engineers hoping to finesse the craft onto a homeward-bound trajectory back to Earth. * Black Hole Swallows Neutron Star, Observations Suggest http://www.space.com/scienceastronomy/0512..._collision.html A distant eruption of high-energy gamma rays is evidence for a black hole swallowing another dense object called a neutron star, astronomers announced today. -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Dec 16 2005, 04:01 PM
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#65
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Senior Member Group: Members Posts: 1636 Joined: 9-May 05 From: Lima, Peru Member No.: 385 |
Example for Hayabusa return starting in June 2007
Hayabusa leaving 2007 to Earth 2010 New trajectory (red line) leaving Itokawa vicinity in spring of 2007, returning to Earth in June of 2010 is shown here. The Xenon gas consumption meets the current amount that remains. There will be some strategy needed and left for the operational discussion on how the attitude is protected against unexpected disturbance. Interpreting the above picture, in the year 2007, Hayabusa will leave Itokawa by orbiting around to Itokawa before taking the orbit around the Sun in the clockwise. The Earth will orbit in counter-clockwise around the Sun. See the red line which is the proyected return home in 2007. The blue line is the proposed route to home in this year. The question is why Hayabusa will make a small loop in the half way of orbit? (see on the left side) Rodolfo |
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Dec 16 2005, 04:16 PM
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#66
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
-------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Dec 16 2005, 05:28 PM
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#67
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Junior Member Group: Members Posts: 52 Joined: 24-November 05 From: Tokyo Member No.: 571 |
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Dec 16 2005, 06:42 PM
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#68
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Solar System Cartographer Group: Members Posts: 10146 Joined: 5-April 05 From: Canada Member No.: 227 |
ljk4-1 :
"QUOTE(djellison @ Dec 14 2005, 03:30 PM) Some day being Apollo 12 Doug Nah, that was a fluke. " No - Apollo 12 collecting bits of Surveyor 3, not the return of its SIVB, which must be what you are thinking of... Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Dec 16 2005, 06:48 PM
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#69
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
QUOTE (Phil Stooke @ Dec 16 2005, 01:42 PM) ljk4-1 : "QUOTE(djellison @ Dec 14 2005, 03:30 PM) Some day being Apollo 12 Doug Nah, that was a fluke. " No - Apollo 12 collecting bits of Surveyor 3, not the return of its SIVB, which must be what you are thinking of... Phil Just being facetious. I do consider Apollo 12 to have conducted one of the first space archaeology missions. I was initially referring to a future time when there is a real plan and system in place for organized space archaeology. Funny and sad how schools do not recognize the Space Age as a historical period to study in its own right. That too shall change. -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Dec 17 2005, 05:44 AM
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#70
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
The Hayabusa orbits plot is in sun-earth-fixed ROTATING coordinates. The loops are where the spacecraft, I think at perehilion, is travelling faster than Earth, while the rest of the orbit it's travelling slower.
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Dec 17 2005, 08:52 AM
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#71
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Member Group: Members Posts: 356 Joined: 12-March 05 Member No.: 190 |
Heathens! How dare you try to explain away Hayabusa's divine epicycles as a mere illusion of refrence point!!
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Dec 17 2005, 01:54 PM
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#72
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (amezz @ Dec 14 2005, 11:46 AM) I suspect that 'hanging around' Itokawa would not actually involve being near enough to see anything - if the spacecraft has to be kept simply ticking over, then they won't want to waste resources doing extended station-keeping with what turned out to be a very small and difficult target. Except for the return element, Hayabusa has been a stunning success, and I hope we don't see the mission downplayed a la Nozomi. Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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Dec 17 2005, 08:11 PM
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#73
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Forum Contributor Group: Members Posts: 1372 Joined: 8-February 04 From: North East Florida, USA. Member No.: 11 |
"Except for the return element, Hayabusa has been a stunning success, and I hope we don't see the mission downplayed a la Nozomi. "
I disagree, so far its robot missed the asteroid, they did not know it had touched down, they don't know if they have any samples, and its out of control and pretty much disabled, it will be a miricle if it ever makes it back to earth, which I doubt, it'll proberbly die in the cold of space. Thats IMHO. |
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Guest_BruceMoomaw_* |
Dec 17 2005, 09:18 PM
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#74
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Guests |
Well, it did everything NEAR did on only about 2/3 of the money, which is not to be sneezed at -- especially since it gave us nice comparative data on another asteroid. Unfortunately, it now looks as though everything it tried to do BEYOND what NEAR did will be a washout.
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Dec 17 2005, 10:04 PM
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#75
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Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
QUOTE (BruceMoomaw @ Dec 17 2005, 10:18 PM) Well, it did everything NEAR did on only about 2/3 of the money, which is not to be sneezed at -- especially since it gave us nice comparative data on another asteroid. Unfortunately, it now looks as though everything it tried to do BEYOND what NEAR did will be a washout. Bruce: o It used an ion engine operationally in deep space o Made use of sophisticated auto-nav and rendezvous systems o Demonstrated close-in maneuvers in multiple ways And performed a NEAR-like mission, too! All in all, a helluva mission! Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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