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TEGA (Thermal Evolved Gas Analyzer), an apparent problem
Guest_Zvezdichko_*
post May 31 2008, 06:48 PM
Post #1





Guests
Hello,

According to the publication here:
http://www.space.com/missionlaunches/08053...ion-update.html


The glitch seems to be a short circuit in a filament in a part of the instrument that ionizes the vapors before they are sent to the detector...

Does that mean that it's directly related to the DSC oven?
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bgarlick
post Jun 4 2008, 03:50 PM
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The screen behind the TEGA doors looks very fine meshed and the soil looks very clumpy. I would not be surprised if they have a real hard
time getting any material through that screen. Is there a way for them to tell how much material is in the oven before closing the oven and starting the baking?
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bgarlick
post Jun 7 2008, 06:17 PM
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QUOTE (bgarlick @ Jun 4 2008, 07:50 AM) *
The screen behind the TEGA doors looks very fine meshed and the soil looks very clumpy. I would not be surprised if they have a real hard
time getting any material through that screen. Is there a way for them to tell how much material is in the oven before closing the oven and starting the baking?


Darn! It looks like my concern back on the 4th was not completely unfounded...
I wonder if they have the dexterity to use the RA scoop to manually 'smoosh' some of the soil through the TEGA screen, or at least press down on the soil on the screen with the scoop while the shakers are activated.
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brianc
post Jun 7 2008, 07:09 PM
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QUOTE (bgarlick @ Jun 7 2008, 07:17 PM) *
Darn! It looks like my concern back on the 4th was not completely unfounded...
I wonder if they have the dexterity to use the RA scoop to manually 'smoosh' some of the soil through the TEGA screen, or at least press down on the soil on the screen with the scoop while the shakers are activated.


A wee tap with the scoop on the end of the arm should do the trick. My wealth of DIY projects leaves with me with the conclusion that there are few jobs that can't be completed with the aid of a hammer and screwdriver and the scoop looks like the sort of thing I would use as a hammer, actually my dad (god rest his soul) may well have used the scoop edge as a screwdriver substitute, I seem to recall him using mother's cutlery as proxy-screwdrivers !
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MahFL
post Jun 7 2008, 07:22 PM
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Oh oh, lots of head scratching at UA.
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Posts in this topic
- Zvezdichko   TEGA (Thermal Evolved Gas Analyzer)   May 31 2008, 06:48 PM
- - rlorenz   QUOTE (Zvezdichko @ May 31 2008, 02:48 PM...   Jun 1 2008, 03:33 PM
- - Skyrunner   As I understand it the part that has shorted out i...   Jun 2 2008, 02:03 PM
|- - rlorenz   QUOTE (Skyrunner @ Jun 2 2008, 09:03 AM) ...   Jun 2 2008, 04:07 PM
- - Skyrunner   Yeah, I should have known that. Next time I work w...   Jun 3 2008, 01:33 PM
- - climber   One TEGA image on sol 9 : http://phoenix.lpl.arizo...   Jun 3 2008, 09:19 PM
|- - mars loon   QUOTE (climber @ Jun 3 2008, 10:19 PM) On...   Jun 3 2008, 09:23 PM
- - BrianL   Are they planning to test all the doors to see if ...   Jun 3 2008, 11:22 PM
|- - Airbag   QUOTE (BrianL @ Jun 3 2008, 06:22 PM) Are...   Jun 4 2008, 12:24 AM
|- - rlorenz   QUOTE (Airbag @ Jun 3 2008, 08:24 PM) Whi...   Jun 4 2008, 01:16 AM
- - bgarlick   Do the doors need to also be able to close for pro...   Jun 4 2008, 12:05 AM
- - Sandro   Hi together I just had an short idea on a possibl...   Jun 4 2008, 01:09 PM
|- - MahFL   I think the safest thing to do is just use the ove...   Jun 4 2008, 02:38 PM
|- - nilstycho   Whenever something gets stuck on a spacecraft, the...   Jun 4 2008, 04:04 PM
|- - Tom Tamlyn   QUOTE (nilstycho @ Jun 4 2008, 12:04 PM) ...   Jun 4 2008, 11:54 PM
||- - volcanopele   QUOTE (Tom Tamlyn @ Jun 4 2008, 04:54 PM)...   Jun 6 2008, 08:30 AM
||- - Skyrunner   QUOTE (volcanopele @ Jun 6 2008, 10:30 AM...   Jun 6 2008, 08:40 AM
||- - SickNick   QUOTE (volcanopele @ Jun 6 2008, 06:30 PM...   Jun 8 2008, 02:43 AM
||- - dvandorn   QUOTE (SickNick @ Jun 7 2008, 09:43 PM) D...   Jun 8 2008, 04:25 AM
|- - rlorenz   QUOTE (nilstycho @ Jun 4 2008, 12:04 PM) ...   Jun 5 2008, 01:55 PM
|- - centsworth_II   QUOTE (rlorenz @ Jun 5 2008, 08:55 AM) Th...   Jun 5 2008, 03:00 PM
- - djellison   A thermal day-night cycle may well help it deploy ...   Jun 4 2008, 03:03 PM
- - bgarlick   The screen behind the TEGA doors looks very fine m...   Jun 4 2008, 03:50 PM
|- - MahFL   QUOTE (bgarlick @ Jun 4 2008, 04:50 PM) T...   Jun 4 2008, 04:54 PM
||- - bgarlick   QUOTE (MahFL @ Jun 4 2008, 08:54 AM) I th...   Jun 4 2008, 05:18 PM
||- - nprev   QUOTE (bgarlick @ Jun 4 2008, 09:18 AM) t...   Jun 4 2008, 05:33 PM
||- - gallen_53   QUOTE (nprev @ Jun 4 2008, 06:33 PM) Or e...   Jun 8 2008, 06:02 AM
||- - Aussie   QUOTE (gallen_53 @ Jun 8 2008, 07:02 AM) ...   Jun 8 2008, 09:05 AM
||- - SickNick   QUOTE (Aussie @ Jun 8 2008, 07:05 PM) But...   Jun 8 2008, 09:18 AM
||- - gallen_53   QUOTE (SickNick @ Jun 8 2008, 09:18 AM) I...   Jun 8 2008, 08:03 PM
|- - rlorenz   QUOTE (bgarlick @ Jun 4 2008, 10:50 AM) I...   Jun 5 2008, 08:26 PM
|- - bgarlick   QUOTE (bgarlick @ Jun 4 2008, 07:50 AM) T...   Jun 7 2008, 06:17 PM
|- - brianc   QUOTE (bgarlick @ Jun 7 2008, 07:17 PM) D...   Jun 7 2008, 07:09 PM
|- - MahFL   Oh oh, lots of head scratching at UA.   Jun 7 2008, 07:22 PM
- - Airbag   I'm still kind of surprised that they did not ...   Jun 4 2008, 11:09 PM
|- - JRehling   On the other hand, what if the first use of the RA...   Jun 5 2008, 12:43 AM
|- - Airbag   QUOTE (JRehling @ Jun 4 2008, 08:43 PM) O...   Jun 5 2008, 05:02 PM
- - glennwsmith   I like Sandro's idea, after it has had time to...   Jun 5 2008, 04:53 AM
- - ollopa   Ironically, it is a "hammer" that appea...   Jun 5 2008, 10:33 PM
- - Skyrunner   I was wondering the accuracy of the samples (on bo...   Jun 6 2008, 08:12 AM
|- - Littlebit   QUOTE (Skyrunner @ Jun 6 2008, 02:12 AM) ...   Jun 6 2008, 05:18 PM
- - djellison   Mythbusters "With enough lubrication, we can...   Jun 6 2008, 09:20 AM
|- - ilbasso   QUOTE (djellison @ Jun 6 2008, 04:20 AM) ...   Jun 6 2008, 07:41 PM
|- - mike   What about a flat plate resting long axes parallel...   Jun 7 2008, 07:51 AM
- - Zvezdichko   http://phoenix.lpl.arizona.edu/06_07_pr.php - samp...   Jun 7 2008, 04:06 PM
- - Harder   This first sample is "topsoil" where the...   Jun 7 2008, 05:05 PM
|- - ugordan   QUOTE (Harder @ Jun 7 2008, 07:05 PM) Too...   Jun 7 2008, 05:14 PM
|- - 1101001   QUOTE (Harder @ Jun 7 2008, 09:05 AM) But...   Jun 7 2008, 05:57 PM
- - Sunspot   Oh Dear, things don't seem to be going too wel...   Jun 7 2008, 05:39 PM
- - Harder   Thanks for this info. It states that the rasp prod...   Jun 7 2008, 06:16 PM
|- - elakdawalla   QUOTE (Harder @ Jun 7 2008, 10:16 AM) So ...   Jun 7 2008, 10:34 PM
- - Stu   Well, head-scratching is good, you know? Doesn...   Jun 7 2008, 07:36 PM
|- - Aussie   QUOTE (Stu @ Jun 7 2008, 08:36 PM) but th...   Jun 8 2008, 02:16 AM
- - belleraphon1   Here is where litter box skills will come in handy...   Jun 7 2008, 08:25 PM
- - ngunn   Mars people please - I need some help with dismiss...   Jun 7 2008, 09:11 PM
|- - SickNick   QUOTE (ngunn @ Jun 8 2008, 07:11 AM) Mars...   Jun 8 2008, 02:51 AM
- - deglr6328   The liquid phase of CO2 is forbidden below 5 bar.   Jun 7 2008, 09:45 PM
|- - ngunn   QUOTE (deglr6328 @ Jun 7 2008, 10:45 PM) ...   Jun 7 2008, 10:03 PM
|- - helvick   QUOTE (ngunn @ Jun 7 2008, 11:03 PM) Is t...   Jun 7 2008, 10:28 PM
- - deglr6328   Ionic salts are insoluble in liquid CO2 because it...   Jun 7 2008, 10:25 PM
- - deglr6328   Mightn't we expect the MARDI microphone to be ...   Jun 7 2008, 10:53 PM
- - Reed   Is there a diagram or detailed description of the ...   Jun 8 2008, 12:16 AM
- - deglr6328   QUOTE (SickNick @ Jun 8 2008, 02:51 AM) T...   Jun 8 2008, 05:48 AM
- - ngunn   Excellent replies from the chemists as I had hoped...   Jun 8 2008, 07:58 AM
- - Tman   Could it be that the behavior of this sample is af...   Jun 8 2008, 09:03 AM
|- - JRehling   QUOTE (Tman @ Jun 8 2008, 02:03 AM) Could...   Jun 9 2008, 12:28 AM
|- - jmknapp   QUOTE (JRehling @ Jun 8 2008, 07:28 PM) I...   Jun 9 2008, 11:40 AM
- - Zvezdichko   Hello, I have a question which may sounds a bit si...   Jun 8 2008, 09:37 AM
|- - djellison   QUOTE (Zvezdichko @ Jun 8 2008, 10:37 AM)...   Jun 8 2008, 10:08 AM
- - Zvezdichko   Once again, thank you, Doug. In the end MECA and T...   Jun 8 2008, 10:38 AM
|- - SickNick   QUOTE (Zvezdichko @ Jun 8 2008, 08:38 PM)...   Jun 8 2008, 02:13 PM
- - Zvezdichko   I apologise to you then. This was my natural desir...   Jun 8 2008, 04:34 PM
- - glennwsmith   A tip o' the hat to bgarlick for his predictio...   Jun 8 2008, 06:39 PM
- - Sputnik   Wouldn't a high frequency vibrator between the...   Jun 8 2008, 07:16 PM
- - gallen_53   Sushil Atreya (a professor at the University of Mi...   Jun 8 2008, 08:27 PM
- - Sunspot   Has there been any update on the TEGA problem?   Jun 9 2008, 07:21 AM
- - akuo   Twitter says: QUOTE Goal Sunday was to shake the s...   Jun 9 2008, 07:52 AM
- - Stu   Hey, Doug, if all else fails, they could always as...   Jun 9 2008, 08:02 AM
- - djellison   You think you're funny... you THINK you're...   Jun 9 2008, 10:32 AM
- - akuo   A sol 14 image of TEGA has appeared. There is some...   Jun 9 2008, 10:51 AM
|- - MahFL   QUOTE (akuo @ Jun 9 2008, 11:51 AM) I...   Jun 9 2008, 01:09 PM
|- - ugordan   Hmmm... I wonder how much (if any) of the soil fel...   Jun 9 2008, 01:16 PM
|- - MahFL   I still maintain they poured way too much soil ont...   Jun 9 2008, 01:39 PM
- - Stu   I can't make out much "settling" or ...   Jun 9 2008, 01:40 PM
|- - ugordan   On the brighter side, even if there was soil depos...   Jun 9 2008, 01:46 PM
- - centsworth_II   I wonder why they started with the uppermost oven....   Jun 9 2008, 02:22 PM
- - djellison   The ovens are side by side, not one above the othe...   Jun 9 2008, 02:23 PM
|- - centsworth_II   QUOTE (djellison @ Jun 9 2008, 09:23 AM) ...   Jun 9 2008, 02:30 PM
- - djellison   Yeah - it's a very very expensive, but small, ...   Jun 9 2008, 02:32 PM
|- - centsworth_II   QUOTE (djellison @ Jun 9 2008, 09:32 AM) ...   Jun 9 2008, 02:41 PM
|- - MahFL   QUOTE (djellison @ Jun 9 2008, 03:32 PM) ...   Jun 9 2008, 03:41 PM
- - tuvas   Poor TEGA... It just doesn't seem to be workin...   Jun 9 2008, 03:03 PM
|- - centsworth_II   QUOTE (tuvas @ Jun 9 2008, 10:03 AM) Poor...   Jun 9 2008, 03:07 PM
|- - Stu   QUOTE (centsworth_II @ Jun 9 2008, 04:07 ...   Jun 9 2008, 03:49 PM
- - jmknapp   Is a press conference scheduled today? Seems like ...   Jun 9 2008, 04:08 PM
- - Stu   Yep... Media Update NASA and the University of Ar...   Jun 9 2008, 04:14 PM
- - Sunspot   How many of the original science objectives can be...   Jun 9 2008, 04:18 PM
|- - ugordan   Whoa, people... Getting a bit negative, aren't...   Jun 9 2008, 04:19 PM
- - Stu   I was just thinking that... come on guys, first sa...   Jun 9 2008, 04:22 PM
- - MahFL   There are plenty of positive things about Phoenix ...   Jun 9 2008, 04:36 PM
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