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Mission: Hayabusa 2
spdf
post Jan 22 2008, 02:59 PM
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JAXA wants to continue with Hayabusa 2. However there is/was a huge fight about the budget. Main problem was the budget for the launch vehicle. 2 months ago or so there was a report which said, that JAXA had to find another launch vehicle or the project gets cancelled. Now the Italian space agency played saviour and overed the VEGA. So finally we might see another Hayabusa in 2011.


It was mentioned here:
http://www.jspec.jaxa.jp/080110Final_IPEWG-ProgramBook.pdf
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Paolo
post Dec 29 2012, 08:57 AM
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high resolution pics are on JAXA digital archive
http://jda.jaxa.jp/category_p.php?lang=e&a...mp;page_pics=50
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pandaneko
post Dec 31 2012, 06:51 AM
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QUOTE (Paolo @ Dec 29 2012, 05:57 PM) *
high resolution pics are on JAXA digital archive
http://jda.jaxa.jp/category_p.php?lang=e&a...mp;page_pics=50


Thanks, Paolo

I also found an intersting article, which I have translated as follows. Its origin is given at the top of my translation. In it, P stands for pictures and G stands for graphics. Some of these are actually texts and they are too small to be properly recognied, so I have not translated these.

Here it goes, from P

http://news.mynavi.jp/articles/2012/12/28/...usa2/index.html


JAXA demonstrates Hayabusa-2 flight model to the press

On 26 December JAXA displayed the flight model currently under construction at its Sagamihara campus (ISAS campus). It is a succesor to Hayabusa which landed on
an asteroid caIled Itokawa and returned to Earth in June 2010. It was shown to the press at the time when only its main body frame and solar pannells are complete.

P-1: Hayabusa 2 shown here. It looks very different from its final form of completion.
P-2: This a 1/20 scale model. A cylindrical device shown in the middle of its body is the impacter.


Another point of difference is its increased length (or height)

Hayabusa 2 measures 1.0mx1.6mx1.25m and weighs 600kg including fuel. As its predecessor it is intended to carry out a sample return mission. Launch timing of December
2014 is assumed. If successful it will return at the end of 2020.


The model shown this time is the completed body frame with its solar pannels plus dummy weight components. Dummy weights are attached to ensure same weight
and same centre of gravity during the vibration tests currently being conducted.


P-3: Shown from behind the probe. Body and solar pannels are flight ready. Main body is composed of 8 alminium honeycombe pannels (6 outer and 2 inner pannels).
P-4: Holes are meant to hold iron engines. Shown in front is the dummy iron engine weight and fuel tank dummy weight is seen at the end of the hole.


P-5: A pipe like object is seen sticking out. This is a dummy middle gain antenna.
P-6: Seen from the left. 3 solar pannels per one wing are folded and obstructing the view of the side of the main frame.


P-7: The device with an ambrella like object is the sampler horn. This sampler horn also is a flight model. A cylinder shown in front is the sase for Minerba 2
(mini-rover)
P-8: Sampler horn seen from the other side. Since three minerba 2 rovers will be on board there is also another cyliner on this side.


P-9: We could not get the front view of of the main body. Dummy weight of the return capsule is only just shown here.
P-10: The model is placed on the vertical vibration tester. Red cable leading from the probe is for acceleration sensors. In front is the horizontal vibration
test bed.


Main points of difference from Hayabusa are as follows.


G-1: On board device comparison (1)
G-2: On board device comparison (2))


Conspicuous in its external appearance is the two high gain flat antennas in place of the usual parabolic antenna. Of these one is intended as with Hayabusa for X-band
(7-8 GHz) range, but the other one is for Ka band (32 GHz) range to ensure higher comms. speed and to secure higher degree of redundancy.


Vital to the return journey is the fuel efficient iron engines. Same number of four engines will be on board. However, propulsive power of each unit has been
increased from 8mN to 10mN.

New device that attracted our attention is the impacter. This device will accelerate a 2 kg copper collider (liner) to a few km velocity by explosion of an explosive
and collide with the asteroid surface, creating an artificial crater of a few meters in diamter. This will make it possible to sample prestine inner materials not
affected by solar corrosion.

There is no significant change made to the sampler horn. One small change is the nails added to the inner surface of the horn tip in order to increase the amount of
samples. The number of projecter has been increased from 3 to 4. Sample containing room is now divided into 3 sections (previously 2 sections).

With Hayabusa there was only one mini rover called Minerba which faild to land on Itokawa. With Hayabusa 2 there will be three of these of similar size and these will
be collectively called Minerba 2. In addition another small lander called MASCOT developped in Europe will be on board.


Hayabusa was intended for sampling from an S type asteroid. Hayabusa 2 will ber flying to a C type asteroid 1999JU3 where existence of organic materials and water
is expected. As a result observation devices will include a near infrared spectrometer and mid infrared camera. Of these Hayabusa did have a near infrared spectrometer,
but observation range has been changed so that water absorption band can be seen.

Main body frame looks similer in size, but it is longer by 15cm in the height direction. Its weight is also heavier bby 100kg in order to cope with the increased
number of devices.

2 years to launch, no time to loose

Expected launch timing is December 2014, but if JAXA fails to make it next launch timing will be 10 years later, making continuiation the whole project impossdible.

Sample return from type C asteroids will be scientifically significant. However, many of them exist in the main belt between Mars and Jupiter and they are
too far from here and Hayabusa class probes will not be able to cope with the mission. 1999JU3 just happens to be in near earth orbit, making it about the only type C
asteroid.




G-3: With Hayabusa 2 there are 3 points of significance
G-4: Mission scenario is different



G-5: Selection of target asteroid. 1999JU3 has been selected.
G-6: With 1999JU3 we still do not know its exact shape.


Project manager, Prof Hitoshi Kuninaka of JAXA (ISAS) stresses emphatically that they will to stick with the launch in December 2014. Theoretically speaking,
there are windows in June and December of 2015. However, arrival timing of June 2018 cannot be moved and the delayed launch will mean that much harsher operation
of iron engines.





P-11: Hayabusa 2 project manager, Prof Hitoshi Kuninaka. He was in cgarge of iron engines with Hayabusa.

December 2014 launch means 80% operation rate. However, the launch in Decmber 2015 will require 96% operation rate, meaning rest time of only 7 hours per week.
Communication with the earth station alone will require 5 to 6 hours and that means almost limiting conditions in case of troubles.

Right now, Hayabusa 2 is located at the Sgamihara campus of JAXA (ISAS), but very soon after the year end 2012 it will be transported to Tsukuba Space Center
to undergo accoustic tests. It will then be returnd to Sagamihara in mid January 2013 to undergo electricl tests and other component tests. Then, from October
2013 its final configuration will start, to be flight ready by summer 2014.



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TheAnt
post Jan 1 2013, 10:30 AM
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QUOTE (pandaneko @ Dec 31 2012, 07:51 AM) *
I also found an intersting article, which I have translated as follows.....


Thank you for yet another update pandaneko, appreciated. =)
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Posts in this topic
- spdf   Mission: Hayabusa 2   Jan 22 2008, 02:59 PM
- - maschnitz   I was trying to hunt around for word on what happe...   Jan 29 2009, 03:28 AM
- - Holder of the Two Leashes   Not a great advertisement for translation software...   Jan 29 2009, 04:44 PM
- - maschnitz   So he's saying, basically - now or never on Ha...   Jan 29 2009, 07:46 PM
- - mps   Hayabusa 2 is currently planned to be launched wit...   Jul 28 2009, 07:32 AM
|- - stevesliva   Fantastic. I love it when successful hardware get...   Jul 28 2009, 05:21 PM
- - Paolo   In the latest issue of Astronomy & Astrophysic...   Aug 29 2009, 07:23 AM
- - Paolo   on arXiv today Spitzer observations of the asteroi...   Oct 2 2009, 05:19 AM
- - Paolo   The latest issue of Nature mentions Hayabusa 2 whi...   Jul 4 2010, 06:41 PM
- - Drkskywxlt   I saw a presentation today on Hayabusa 2 that was ...   Jul 14 2010, 07:47 PM
|- - pandaneko   An article found in today's (15 July) Asahi Sh...   Jul 15 2010, 07:48 AM
|- - pandaneko   Oh, dear! I forgot to mention that Hayabusa 2 ...   Jul 15 2010, 07:56 AM
|- - pandaneko   I now know Hayabusa 2's target. It is 1999JU3....   Jul 15 2010, 01:43 PM
- - Hungry4info   Some diagrams and what-not.   Aug 6 2010, 08:49 PM
|- - pandaneko   There was an article in today's (11 August) Y...   Aug 11 2010, 12:27 PM
||- - pandaneko   My apologies, an explosive charge will be used to ...   Aug 12 2010, 11:37 AM
|||- - pandaneko   Further apologies Please do not blame me. As I lo...   Aug 12 2010, 11:50 AM
||||- - AndyG   A crater that size would mean blasting out over 10...   Aug 12 2010, 03:58 PM
||||- - Drkskywxlt   My understanding is the spacecraft will be in a st...   Aug 12 2010, 06:08 PM
|||- - pandaneko   There was a repeat TV programme on Hayabusa and Ha...   Aug 13 2010, 12:09 PM
|||- - pandaneko   What follows is from WIKI on Hayabusa 2. I had a l...   Aug 14 2010, 08:52 AM
|||- - pandaneko   I should imagine that JAXA itself cannot carry any...   Aug 15 2010, 12:10 PM
|||- - spdf   http://www.planetaryprobe.eu/IPPW7/proceed...sion7...   Aug 16 2010, 01:02 AM
||- - pandaneko   What follows is found on today's (10 Feb. 2012...   Feb 10 2012, 12:13 PM
|- - pandaneko   QUOTE (Hungry4info @ Aug 7 2010, 05:49 AM...   Sep 18 2012, 09:58 AM
|- - Blue Sky   Is Prof. Kawaguchi involved in Hayabusa-2 at all?   Sep 18 2012, 12:10 PM
|- - pandaneko   QUOTE (Blue Sky @ Sep 18 2012, 09:10 PM) ...   Sep 19 2012, 11:30 AM
- - nprev   Thanks, Pandaneko! 10^3 uprating--that's ...   Aug 14 2010, 05:16 PM
- - nprev   GREAT news!!!! P., I know that Em...   Dec 23 2010, 09:40 AM
|- - pandaneko   Yes, though only in Japanese, from the web digest ...   Dec 23 2010, 10:15 AM
- - centsworth_II   Here's the English version: http://www.yomiuri...   Dec 23 2010, 08:08 PM
|- - pandaneko   I have got this feeling that we may shift this top...   Dec 24 2010, 09:15 AM
|- - pandaneko   Another crazy thought... I was not sure where I sh...   Jan 25 2011, 10:10 AM
|- - centsworth_II   QUOTE (pandaneko @ Jan 25 2011, 05:10 AM)...   Jan 25 2011, 11:15 AM
- - Littlebit   As I recall, the problem with the Haybusa sampling...   Jan 26 2011, 05:32 PM
|- - pandaneko   Thank you for clarification of MINERVA's role....   Jan 27 2011, 02:56 PM
- - ZLD   Somewhere I read that the Hyabusa development cost...   Jan 27 2011, 06:47 PM
|- - djellison   QUOTE (ZLD @ Jan 27 2011, 10:47 AM) Also,...   Jan 27 2011, 07:04 PM
- - ZLD   Doh, forgot that one. Thanks for reminding me.   Jan 27 2011, 08:33 PM
|- - pandaneko   No, I cannot provide link information as all this ...   Jan 30 2012, 08:41 AM
- - Paolo   thanks for the update pandaneko! cutting the b...   Feb 10 2012, 03:38 PM
|- - spdf   Somewhere else they said, the 2014 launch depends ...   Feb 10 2012, 07:34 PM
|- - pandaneko   QUOTE (spdf @ Feb 11 2012, 04:34 AM) Some...   Apr 25 2012, 08:48 AM
|- - pandaneko   Nihon Keizai Shimbun here, a financial newspaper, ...   May 25 2012, 07:28 AM
|- - pandaneko   QUOTE (pandaneko @ May 25 2012, 04:28 PM)...   Jun 9 2012, 05:44 AM
|- - pandaneko   There is an interesting feature on JAXA Japanese w...   Jun 25 2012, 07:09 AM
|- - tolis   UNNECESSARY QUOTING REMOVED - ADMIN Paraphrasing ...   Jun 28 2012, 04:13 PM
|- - Blue Sky   Here is a short article from the English edition o...   Jun 28 2012, 11:42 PM
- - Explorer1   Why would it? The asteroid's gravity is too ne...   Jun 29 2012, 12:51 AM
|- - pandaneko   QUOTE (Explorer1 @ Jun 29 2012, 09:51 AM)...   Jul 2 2012, 09:13 AM
|- - pandaneko   QUOTE (pandaneko @ Jul 2 2012, 06:13 PM) ...   Jan 2 2013, 12:49 PM
|- - pandaneko   Today, I actually managed to find an answer to thi...   Jan 3 2013, 09:28 AM
- - Explorer1   Seems to me like the goal is both replicating Deep...   Jul 2 2012, 08:54 PM
|- - pandaneko   QUOTE (Explorer1 @ Jul 3 2012, 05:54 AM) ...   Jul 5 2012, 08:03 AM
- - Paolo   Hayabusa 2's structure complete http://www.jax...   Dec 27 2012, 09:03 AM
- - elakdawalla   That's great news. I wish JAXA posted higher-r...   Dec 28 2012, 03:39 AM
- - Paolo   high resolution pics are on JAXA digital archive h...   Dec 29 2012, 08:57 AM
|- - pandaneko   QUOTE (Paolo @ Dec 29 2012, 05:57 PM) hig...   Dec 31 2012, 06:51 AM
|- - TheAnt   QUOTE (pandaneko @ Dec 31 2012, 07:51 AM)...   Jan 1 2013, 10:30 AM
- - Paolo   thank you for your translation, pandaneko, as usua...   Jan 3 2013, 04:47 PM
- - centsworth_II   From "Small carry-on impactor of Hayabusa2 m...   Jan 3 2013, 09:37 PM
|- - pandaneko   Quote removed - Mod Thank you very much for this...   Jan 4 2013, 02:14 AM
|- - pandaneko   Quote removed - Mod This, actually is far better ...   Jan 4 2013, 07:48 AM
|- - pandaneko   Below is just for your information. March edition...   Jan 28 2013, 08:21 AM
|- - pandaneko   On my way back from a gym session I walked into a ...   Jan 29 2013, 11:41 AM
|- - MahFL   Is the reason for the reaction wheels failure avai...   Jan 29 2013, 12:27 PM
|- - pandaneko   QUOTE (MahFL @ Jan 29 2013, 09:27 PM) Is ...   Jan 30 2013, 08:31 AM
- - Blue Sky   Ah, so the explosive device is not "fired...   Feb 7 2013, 08:55 PM
|- - pandaneko   What follows is from MSN-Sankei newspaper dated 07...   Mar 19 2013, 08:41 AM
- - Explorer1   Wow! Now that's dedication to PR! Yes,...   Mar 19 2013, 05:01 PM
- - centsworth_II   Most impressive to see that outreach in this case ...   Mar 19 2013, 06:55 PM
- - nprev   Impressive outreach indeed, but let's be caref...   Mar 19 2013, 10:03 PM
- - Astro0   Hayabusa 2 Name and Message Campaign http://www....   Apr 8 2013, 03:03 AM
- - monty python   I love these send your name things. I can show sup...   Apr 8 2013, 05:32 AM
- - punkboi   You can now submit your name on the Japanese versi...   Apr 10 2013, 04:39 AM
- - punkboi   You can now submit your name on The Planetary Soci...   Apr 16 2013, 12:36 AM
|- - pandaneko   I have checked with JAXA HP in English, but I coul...   Apr 30 2013, 08:33 AM
|- - stone   " 2 piggy-backs to be launched with Hayabusa ...   Apr 30 2013, 12:52 PM
|- - TheAnt   QUOTE (pandaneko @ Apr 30 2013, 10:33 AM)...   Apr 30 2013, 07:01 PM
- - Paolo   according to this presentation (undated but named ...   Apr 30 2013, 05:00 PM
- - Explorer1   Is it also too late to use those 50 kilos on Hayab...   May 1 2013, 01:23 AM
- - nprev   Sure, but it would be a risk to rush a development...   May 1 2013, 03:16 AM
|- - vjkane   Aviation Week and Space Technology reports that Ja...   May 2 2013, 12:04 AM
- - Paolo   for more info on the Mars aerocapture demonstrator...   May 1 2013, 09:54 AM
- - Paolo   Hayabusa 2 will be accompanied in solar orbit by t...   Dec 12 2013, 07:57 AM
|- - pandaneko   QUOTE (Paolo @ Dec 12 2013, 04:57 PM) Hay...   Apr 6 2014, 05:46 AM
|- - pandaneko   QUOTE (Paolo @ Dec 12 2013, 04:57 PM) Hay...   Apr 10 2014, 10:10 PM
|- - Paolo   QUOTE (pandaneko @ Apr 11 2014, 12:10 AM)...   Apr 11 2014, 05:26 AM
|- - pandaneko   This really is just in case what follows has evade...   May 24 2014, 10:57 PM
- - Paolo   a rather detailed description of PROCYON (in Japan...   Jan 31 2014, 08:18 AM
|- - pandaneko   QUOTE (Paolo @ Jan 31 2014, 05:18 PM) a r...   Apr 7 2014, 01:19 AM
||- - Tom Dahl   Thank you very much for the translations!   Apr 7 2014, 04:49 PM
|- - pandaneko   QUOTE (Paolo @ Jan 31 2014, 05:18 PM) a r...   Apr 7 2014, 11:05 PM
|- - pandaneko   QUOTE (Paolo @ Jan 31 2014, 05:18 PM) a r...   Apr 8 2014, 10:33 PM
|- - pandaneko   QUOTE (Paolo @ Jan 31 2014, 05:18 PM) a r...   Apr 10 2014, 11:16 AM
- - Paolo   thank you Pandaneko, and welcome back!   Apr 8 2014, 05:13 AM
- - nprev   Pandaneko, just wanted to thank you for yet anothe...   Apr 9 2014, 04:56 AM
- - Astro0   Fantastic work Pandaneko. Thank you so much for tr...   Apr 10 2014, 11:19 AM
- - vikingmars   Yes : thanks a lot Pandaneko for your translation....   May 25 2014, 03:17 PM
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