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Hayabusa - The Return To Earth, The voyage home
odave
post Nov 28 2005, 03:08 PM
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...starting a new thread for Hayabusa's sampling feedback and the return voyage.

After its nail-biting success in November, will there be enough fuel for the Falcon to make it home?


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Guest_BruceMoomaw_*
post Dec 14 2005, 02:33 AM
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I very much doubt it will be around by then, and I'm afraid we will soon be able to add Hayabusa to Japan's almost unbroken modern record of space failures -- although at least it came a good deal closer to success than most of Japan's missions do. Space missions simply cannot be done on such low funding levels.

I shudder to report that -- according to the Nov. 28 Aviation Week -- JAXA has been taking its advice on how to reform its space program from Dan Goldin.
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ljk4-1
post Dec 14 2005, 02:38 AM
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So - would another nation be willing and able to recover Hayabusa or at least any samples it may have, or even take over its mission?

If the probe is going to hang around Itokawa for almost another year, will it continue to study the planetoid?


--------------------
"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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amezz
post Dec 14 2005, 10:46 AM
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QUOTE (ljk4-1 @ Dec 14 2005, 06:38 AM)
If the probe is going to hang around Itokawa for almost another year, will it continue to study the planetoid?


Yes! They MUST do it, we all hope to see once more the Enigmatic Stone Garden of Itokawa smile.gif
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ljk4-1
post Dec 14 2005, 12:17 PM
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*** JAXA MAIL SERVICE ***

Japan Aerospace Exploration Agency
----------------------------------------------------------------------
Status of the Hayabusa

December 14, 2005

Japan Aerospace Exploration Agency

Hayabusa spacecraft currently undergoes the recovery operation to
resume the communication with the ground stations. It was hit by an
abrupt disturbing torque owing to the fuel leak that occurred before,
and has been out of the ground contact since December 9th. The
project team has a good expect to have the spacecraft resume the
communication soon. However, the project is now not so sure to make
the spacecraft return to earth in June of 2007 and has decided to
lengthen the flight period for three years more to have it return to
the Earth in June of 2010.

On December 8th, Usuda station observed the sudden shifts of the
range-rate measurements at 4:13 UTC with the corresponding gradual
decrease of signal intensity AGC (Automated Gain Controller) read.
The measurement and the intensity change slowly and are currently
estimated due to the out-gassing effect that derived from the fuel
leak-out at the end of last month. The leak occurred on November 26th
and 27th. Since the beacon signal communication resumed on 29th, the
project has made an effort to exclude the vapor gas of the fuel from
the spacecraft. The project has by now identified the out-gassing has
successfully been performed, as its exponential acceleration decay
has shown so far.

On December 8th, the spacecraft was under the resume operation phase
for the chemical propulsion, and was given a slow spin whose period
is about six minutes. From the beginning of December, the project has
introduced the Xenon gas thruster control strategy for emergency,
replacing the chemical propulsion system. But the control capability
of it was not enough strong for the spacecraft to withstand the
disturbance on December 8th. Current estimation says the spacecraft
may be in a large coning motion and that is why the spacecraft has
not responded to the commands sent from the ground station.

The spacecraft has been out of communication since December 9th.
Analysis predicting the attitude property relating to both the Sun
and Earth shows that there will be high possibility counted on for
the resumption of the communication from the ground for several
months or more ahead. However, the spacecraft may have to undergo
another long term baking cycle before it starts the return cruise
operation using ion engines aboard. And it is concluded that the
commencement of the return cruise during December is found difficult.
The project has determined that the return cruise should start from
2007 so that the spacecraft can return to the Earth in June of 2010,
three years later than the original plan, as long as no immediate
resumption tales place very soon.

The spacecraft operation will shift from the normal mode to the
rescue mode for several months to one year long. Long term predict
indicates high probability of having the spacecraft communicated
with the ground station again, with the spacecraft captured well in
the beam width of the Usuda deep space antenna.

The spacecraft will take the advantage of Xenon gas attitude control
again after enough length of baking operation. The Xenon gas that
remains is adequate for the return cruise devised by the ion engines
carried by Hayabusa.
The Hayabusa web page will report anything updated, as soon as it
becomes available.


(Supplement) Hayabusa Rescue Operation

http://www.jaxa.jp/press/2005/12/20051214_...busa_e.html#sup


This page URL:

http://www.jaxa.jp/press/2005/12/20051214_hayabusa_e.html

---------------------------------------------------------------------
Publisher : Public Affairs Department
Japan Aerospace Exploration Agency (JAXA)
Marunouchi Kitaguchi Building,
1-6-5, Marunouchi, Chiyoda-ku, Tokyo 100-8260
Japan
TEL:+81-3-6266-6400

JAXA WEB SITE :

http://www.jaxa.jp/index_e.html


--------------------
"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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Posts in this topic
- odave   Hayabusa - The Return To Earth   Nov 28 2005, 03:08 PM
- - ElkGroveDan   QUOTE (odave @ Nov 28 2005, 03:08 PM)...start...   Nov 28 2005, 03:16 PM
- - RNeuhaus   Recent News from Matsuura Newspaper 2005.11.28 ...   Nov 28 2005, 09:56 PM
|- - ElkGroveDan   QUOTE (RNeuhaus @ Nov 28 2005, 09:56 PM)This ...   Nov 28 2005, 10:09 PM
- - RNeuhaus   According to the article of the space.com. By Dece...   Nov 28 2005, 10:18 PM
- - mike   It would certainly be interesting if Hayabusa foll...   Nov 28 2005, 10:38 PM
- - Joffan   I'm not sure that sitting in Itokawa's sha...   Nov 29 2005, 01:06 AM
- - mike   Yeah, I remembered the solar panels need some sola...   Nov 29 2005, 02:16 AM
- - Ishigame   I would tell you some bad news… JAXA says Hayabusa...   Nov 29 2005, 08:04 AM
|- - odave   Good translation! Worrying news, though. The...   Nov 29 2005, 03:40 PM
|- - hugh   QUOTE (odave @ Nov 29 2005, 03:40 PM)Kawaguch...   Nov 30 2005, 12:40 PM
- - nop   Sorry for multi-posting. If your friends are work...   Nov 29 2005, 04:51 PM
- - odave   QUOTE (ljk4-1 @ Nov 29 2005, 01:44 PM fr...   Nov 29 2005, 07:03 PM
- - Orlin Denkov   QUOTE Probe returning to Earth after asteroid land...   Nov 29 2005, 10:41 PM
- - TheChemist   Probably not good things There are two press r...   Nov 29 2005, 11:09 PM
- - nop   Dear 5thstar (if you read this forum), ljk4-1, oda...   Nov 30 2005, 03:16 AM
|- - RNeuhaus   QUOTE (nop @ Nov 29 2005, 10:16 PM)Dear 5thst...   Nov 30 2005, 04:00 AM
- - deglr6328   Grist for the Moomaw mill ... This from the Nat...   Dec 1 2005, 12:04 AM
- - BruceMoomaw   Oh dear, oh dear, oh dear. Pride goeth before a l...   Dec 1 2005, 12:35 AM
|- - helvick   Nice detailed update from Emily over at The Planet...   Dec 1 2005, 12:48 AM
- - RNeuhaus   Dramatic news extracted from Planetary.org: At t...   Dec 1 2005, 02:24 AM
- - mike   If Hayabusa's thrusters persist in being only ...   Dec 1 2005, 04:18 AM
|- - ElkGroveDan   QUOTE (mike @ Dec 1 2005, 04:18 AM)If Hayabus...   Dec 1 2005, 05:40 AM
||- - ljk4-1   Would it be possible to send out a probe to snag H...   Dec 2 2005, 07:53 PM
|- - Bob Shaw   QUOTE (mike @ Dec 1 2005, 05:18 AM)If Hayabus...   Dec 2 2005, 08:34 PM
- - RNeuhaus   There many options. Wait for a while until before ...   Dec 2 2005, 08:31 PM
|- - Bob Shaw   QUOTE (RNeuhaus @ Dec 2 2005, 09:31 PM)There ...   Dec 2 2005, 08:45 PM
- - odave   5thstar's blog has a few new Hayabusa updates....   Dec 3 2005, 02:06 PM
|- - RogueEngineer   QUOTE (odave @ Dec 3 2005, 11:06 PM)Hopefully...   Dec 7 2005, 12:58 PM
- - BruceMoomaw   Are they actually saying that they themselves acci...   Dec 7 2005, 02:07 PM
- - RNeuhaus   December 7, 2005 05:42 PM According to the L/D of...   Dec 7 2005, 02:31 PM
- - nop   More translations have been added on the comment a...   Dec 8 2005, 12:29 AM
- - Harder   The Dec 8 update of the Y.M. Column is now online....   Dec 8 2005, 01:35 PM
|- - odave   From the above: QUOTE During its operation Dr. Ku...   Dec 8 2005, 02:48 PM
|- - tedstryk   QUOTE (odave @ Dec 8 2005, 02:48 PM)From the ...   Dec 8 2005, 03:36 PM
|- - odave   QUOTE (tedstryk @ Dec 8 2005, 10:36 AM)I have...   Dec 8 2005, 03:46 PM
- - odave   Lots of good info in those new translations - the ...   Dec 8 2005, 04:01 PM
|- - ljk4-1   Status of the Hayabusa ...   Dec 9 2005, 05:08 PM
- - RNeuhaus   Hope that Hayabusa has a match fire on their side ...   Dec 9 2005, 05:17 PM
|- - The Messenger   Since the xenon was not intended to be used as an ...   Dec 9 2005, 07:11 PM
|- - ljk4-1   FATE OF JAPAN'S TROUBLED ASTEROID PROBE UNCERT...   Dec 12 2005, 08:03 PM
|- - odave   QUOTE (The Messenger @ Dec 9 2005, 02:11 PM)S...   Dec 12 2005, 08:35 PM
- - amezz   Press Conference about Hayabusa present status, wi...   Dec 13 2005, 05:49 PM
- - elakdawalla   Just added this to my blog, I thought I'd add ...   Dec 13 2005, 11:44 PM
- - BruceMoomaw   I very much doubt it will be around by then, and I...   Dec 14 2005, 02:33 AM
|- - ljk4-1   So - would another nation be willing and able to r...   Dec 14 2005, 02:38 AM
||- - amezz   QUOTE (ljk4-1 @ Dec 14 2005, 06:38 AM)If...   Dec 14 2005, 10:46 AM
||- - ljk4-1   *** JAXA MAIL SERVICE *** Japa...   Dec 14 2005, 12:17 PM
||- - Bob Shaw   QUOTE (amezz @ Dec 14 2005, 11:46 AM)Yes...   Dec 17 2005, 01:54 PM
||- - MahFL   "Except for the return element, Hayabusa has ...   Dec 17 2005, 08:11 PM
|- - lyford   QUOTE (BruceMoomaw @ Dec 13 2005, 06:33 PM)I ...   Dec 14 2005, 03:17 AM
- - elakdawalla   Shin-ya Matsuura's transcript is up in Japanes...   Dec 14 2005, 02:40 AM
- - elakdawalla   A cooperative translation project is taking place ...   Dec 14 2005, 03:47 AM
- - lyford   QUOTE If the ion engines are ignited again by the ...   Dec 14 2005, 04:47 AM
- - lyford   From the translation: At first when I read the int...   Dec 14 2005, 05:50 AM
- - nop   English version of JAXA press release: http://www....   Dec 14 2005, 12:18 PM
|- - abalone   QUOTE (nop @ Dec 14 2005, 11:18 PM)Guys, wait...   Dec 14 2005, 12:28 PM
- - djellison   All sounds a little bit Nozomi-ish really I just...   Dec 14 2005, 12:45 PM
|- - ljk4-1   QUOTE (djellison @ Dec 14 2005, 07:45 AM)All ...   Dec 14 2005, 05:11 PM
|- - nop   QUOTE (ljk4-1 @ Dec 15 2005, 02:11 AM)Sp...   Dec 14 2005, 05:42 PM
|- - ljk4-1   QUOTE (nop @ Dec 14 2005, 12:42 PM)Nozomi is ...   Dec 14 2005, 06:09 PM
- - djellison   It'd be cheaper, and the results would be bett...   Dec 14 2005, 06:16 PM
|- - ljk4-1   QUOTE (djellison @ Dec 14 2005, 01:16 PM)It...   Dec 14 2005, 07:11 PM
|- - djellison   QUOTE (ljk4-1 @ Dec 14 2005, 07:11 PM)So...   Dec 14 2005, 08:30 PM
|- - ljk4-1   Science/Astronomy: * Asteroid Probe Yields Insigh...   Dec 14 2005, 08:42 PM
|- - ljk4-1   QUOTE (djellison @ Dec 14 2005, 03:30 PM)Some...   Dec 16 2005, 04:16 PM
- - RNeuhaus   Indeed yes, but we are still with diaper in space ...   Dec 14 2005, 06:25 PM
- - RNeuhaus   Example for Hayabusa return starting in June 2007 ...   Dec 16 2005, 04:01 PM
|- - nop   QUOTE (RNeuhaus @ Dec 17 2005, 01:01 AM)The q...   Dec 16 2005, 05:28 PM
- - Phil Stooke   ljk4-1 : "QUOTE(djellison @ Dec 14 2005...   Dec 16 2005, 06:42 PM
|- - ljk4-1   QUOTE (Phil Stooke @ Dec 16 2005, 01:42 PM)lj...   Dec 16 2005, 06:48 PM
- - edstrick   The Hayabusa orbits plot is in sun-earth-fixed ROT...   Dec 17 2005, 05:44 AM
- - deglr6328   Heathens! How dare you try to explain away Hay...   Dec 17 2005, 08:52 AM
|- - lyford   QUOTE (deglr6328 @ Dec 17 2005, 12:52 AM)Heat...   Dec 19 2005, 07:02 AM
- - BruceMoomaw   Well, it did everything NEAR did on only about 2/3...   Dec 17 2005, 09:18 PM
|- - Bob Shaw   QUOTE (BruceMoomaw @ Dec 17 2005, 10:18 PM)We...   Dec 17 2005, 10:04 PM
|- - Holder of the Two Leashes   QUOTE (BruceMoomaw @ Dec 17 2005, 03:18 PM)We...   Dec 18 2005, 02:05 AM
||- - hugh   QUOTE (Holder of the Two Leashes @ Dec 18 200...   Dec 19 2005, 12:30 AM
|- - tedstryk   QUOTE (BruceMoomaw @ Dec 17 2005, 09:18 PM)We...   Dec 18 2005, 04:11 AM
|- - odave   And also remember that this is primarily an engine...   Dec 18 2005, 08:13 PM
- - BruceMoomaw   Let me amend: ALMOST everything. (Its best photos...   Dec 18 2005, 03:11 AM
- - edstrick   Hayabusa returned a huge amount of infrared spectr...   Dec 19 2005, 07:00 AM
|- - Holder of the Two Leashes   QUOTE (edstrick @ Dec 19 2005, 01:00 AM)Hayab...   Dec 19 2005, 05:32 PM
|- - tedstryk   QUOTE (Holder of the Two Leashes @ Dec 19 200...   Dec 20 2005, 05:34 AM
- - The Messenger   Does anyone have any insight into why reaction whe...   Dec 19 2005, 03:33 PM
- - Phil Stooke   Even if Hayabusa only returned a quarter of NEAR...   Dec 19 2005, 07:19 PM
|- - ljk4-1   Would it have been easier to have Hayabusa touch d...   Dec 19 2005, 07:43 PM
- - edstrick   Holder of the Two Leashes: "The reason it ...   Dec 19 2005, 07:38 PM
|- - Holder of the Two Leashes   QUOTE (edstrick @ Dec 19 2005, 01:38 PM)I not...   Dec 19 2005, 08:54 PM
- - RNeuhaus   Minerva would do much better the job with imaging ...   Dec 19 2005, 07:51 PM
- - Joffan   QUOTE (Holder of the Two Leashes @ Dec 19 200...   Dec 19 2005, 10:31 PM
|- - Holder of the Two Leashes   QUOTE (Joffan @ Dec 19 2005, 04:31 PM)I thoug...   Dec 19 2005, 11:45 PM
- - lyford   And NEAR never found a Red Light District, either....   Dec 20 2005, 02:43 AM
- - edstrick   Holder of the Two Leashes: "...One other th...   Dec 20 2005, 09:31 AM
|- - JRehling   Both missions were successful. Note that they were...   Dec 20 2005, 04:43 PM
|- - Holder of the Two Leashes   QUOTE (edstrick @ Dec 20 2005, 03:31 AM)I gue...   Dec 20 2005, 07:29 PM
|- - The Messenger   QUOTE (edstrick @ Dec 20 2005, 02:31 AM)Where...   Dec 21 2005, 02:34 PM
- - BruceMoomaw   Hawaii's Jeffrey Bell has been telling me for ...   Dec 20 2005, 10:12 PM
- - Phil Stooke   I just noticed this, though it may not be brand ne...   Dec 30 2005, 06:32 PM
- - ljk4-1   Maybe if we wait a few million years, we'll ge...   Jan 3 2006, 05:11 PM
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