Phoenix surface mission

Page 21 - Seeking answers about space? Join the Space community: the premier source of space exploration, innovation, and astronomy news, chronicling (and celebrating) humanity's ongoing expansion across the final frontier.
Status
Not open for further replies.
A

abq_farside

Guest
Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Andrew, can you help explain this? <br />Posted by bearack</DIV><br /><br />I saw that and wondered too. <div class="Discussion_UserSignature"> <p> </p><p><em><font size="1" color="#000080">Don't let who you are keep you from becoming who you want to be!</font></em></p> </div>
 
M

MeteorWayne

Guest
<p>Teleconference:</p><p><br />http://www.nasa.gov/news/media/newsaudio/index.html</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
S

shawneric

Guest
<p>The teleconfernce was fasinating. The science coming out of this is totally awesome.</p><p>Update on "spring" thing</p><p>No one knows or will mention what it is yet. The spokesperson for Lockeheed and the spacecraft did not know what the object is and did not know if it was just something that was suppose to come off the lander when landing or something that just fell off?&nbsp;</p><p>Sara at U of A still didn't know what the object is to report on?</p><p>Sent images to Sky and Telescope as they have reporters at the briefings. I will let everyone know. </p><p>Sure interesting no one yet as confirmed what it is, just that they have seen it as well.</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p>
 
M

MeteorWayne

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>The teleconfernce was fasinating. The science coming out of this is totally awesome.Update on "spring" thingNo one knows or will mention what it is yet. The spokesperson for Lockeheed and the spacecraft did not know what the object is and did not know if it was just something that was suppose to come off the lander when landing or something that just fell off?&nbsp;Sara at U of A still didn't know what the object is to report on?Sent images to Sky and Telescope as they have reporters at the briefings. I will let everyone know. Sure interesting no one yet as confirmed what it is, just that they have seen it as well.&nbsp;&nbsp;&nbsp;&nbsp; <br />Posted by shawneric</DIV><br /><br />Are you saying Sara made a staement about it?</p><p>I did not hear that.</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
A

abq_farside

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>The teleconfernce was fasinating. The science coming out of this is totally awesome.Update on "spring" thing No one knows or will mention what it is yet. The spokesperson for Lockeheed and the spacecraft did not know what the object is and did not know if it was just something that was suppose to come off the lander when landing or something that just fell off?&nbsp;Sara at U of A still didn't know what the object is to report on?<br />Posted by shawneric</DIV><br /><br />Seems like it would be fairly is easy to find out where it came from.&nbsp; But maybe just not a very high priority for anybody yet.</p> <div class="Discussion_UserSignature"> <p> </p><p><em><font size="1" color="#000080">Don't let who you are keep you from becoming who you want to be!</font></em></p> </div>
 
B

bobw

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Seems like it would be fairly is easy to find out where it came from.&nbsp; But maybe just not a very high priority for anybody yet. Posted by abq_farside</DIV></p><p>I have been searching like mad trying to find a diagram or something showing a possible spring loaded explosive bolt which held the arm down or something.&nbsp; No luck with that yet but I did come across some really good pictures of Phoenix, the best I have seen so far.&nbsp; One of them has a picture of springs that look pretty "suspicious" :)<br /><br />lots of springs<br />http://www.lockheedmartin.com/data/assets/14531.jpg<br /><br />picture of arm<br />http://www.lockheedmartin.com/data/assets/14812.gif<br /><br />detail of scoop<br />http://www.lockheedmartin.com/data/assets/14534.gif<br /><br />many great big pictures<br />http://www.lockheedmartin.com/products/PhoenixMarsLander/PhoenixMarsLanderGallery.html<br /><br />Sorry if these pictures have been referenced previously, I have missed a few of the posts.&nbsp; Here's a cropped section from 14531.jpg.<br /><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/7/2/97cb7970-5ef3-4208-820e-3f166184f6e2.Medium.jpg" alt="" width="351" height="308" /></p> <div class="Discussion_UserSignature"> </div>
 
S

shawneric

Guest
<p>The statement Sara made was to me on the phone, not in the press conference.</p><p>&nbsp;</p>
 
3

3488

Guest
<p><strong><font size="2" color="#000080">Soil scoop in colour Sol 11.</font></strong></p><p><img src="http://sitelife.space.com/ver1.0/Content/images/store/8/4/387593c8-13bb-4ed0-b4d0-d7b173a4a25e.Medium.jpg" alt="" /></p><p><font size="2" color="#000080"><strong>Dodo & Baby Bear Trenches.</strong></font><br /><img src="http://sitelife.space.com/ver1.0/Content/images/store/14/9/7ea60342-85ae-47f1-99f7-d0bf9aade4ab.Medium.jpg" alt="" /></p><p><strong><font size="2" color="#000080">Soil in scoop poised above TEGA.</font></strong><br /><img src="http://sitelife.space.com/ver1.0/Content/images/store/12/4/1caaac21-271f-4785-b406-f8410494fc51.Medium.jpg" alt="" /></p><p><font size="2"><strong>Andrew Brown.</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
3

3488

Guest
<p><font size="2" color="#000080"><strong>Weather report upto Sol 10.</strong></font><br /><img src="http://sitelife.space.com/ver1.0/Content/images/store/6/10/8626d035-3f2b-4175-8a7d-10cd6788866b.Medium.gif" alt="" /></p><p><strong><font size="2" color="#000080">Weather Report for Sol 10.</font></strong><br /><img src="http://sitelife.space.com/ver1.0/Content/images/store/0/1/e05c1b13-e77b-4921-9128-4c854ea5be87.Medium.jpg" alt="" /></p><p><font size="2" color="#000000"><strong>Sol 10 Weather:</strong></font></p><p><font size="2" color="#000000"><strong>Maximum Temperature: -25 C / -13 F. Sunny.</strong></font></p><p><font size="2" color="#000000"><strong>Minimum Temperature: -82 C / -115.6 F. Sunny.</strong></font></p><p><font size="2" color="#000000"><strong>Wind: 9 KPH from the South.</strong></font></p><p><font size="2" color="#000000"><strong>Pressure: 8.45 millibars.</strong></font></p><p><font size="2" color="#000000"><strong>Andrew Brown.</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
S

SpaceKiwi

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#3366ff">Seems like it would be fairly is easy to find out where it came from.&nbsp; But maybe just not a very high priority for anybody yet. <br /></font><strong>Posted by abq_farside</strong></DIV></p><p>&nbsp;</p><p>Yes, it's become far more interesting that no one on the mission team seems particularly keen to tidy up this loose end, than it is that there appears to be a spring lying in the dirt.&nbsp; I guess they figure it's out of the way under the lander and everything's working (outside of the filament issue), so nothing to be concerned about.</p><p>&nbsp;</p><p>SK&nbsp; <img src="http://sitelife.space.com/ver1.0/Content/images/store/13/1/8d15ce53-d7b9-4974-91b2-eb1b860246c9.Medium.gif" alt="" /></p> <div class="Discussion_UserSignature"> <p><em><font size="2" color="#ff0000">Who is this superhero?  Henry, the mild-mannered janitor ... could be!</font></em></p><p><em><font size="2">-------------------------------------------------------------------------------------------</font></em></p><p><font size="5">Bring Back The Black!</font></p> </div>
 
J

JonClarke

Guest
<p>http://phoenix.lpl.arizona.edu/06_06_pr.php</p><p>Does anyone know how long it takes to run a sample through TEGA?</p><p>Jon</p> <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>
 
S

SpaceKiwi

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#3366ff">Does anyone know how long it takes to run a sample through TEGA?Jon <br /></font><strong>Posted by jonclarke</strong></DIV></p><p>&nbsp;</p>The link you provided indicates a few days to a week according to Dr Smith.&nbsp; An individual heating cycle can be varied but I'm unsure how many cycles can/will be attempted for&nbsp;each&nbsp;sample and&nbsp;oven. (surely a&nbsp;few given the timeframe from Smith)&nbsp; I found the following, which describes the basic operation :-<font face="Times New Roman" size="2"> <p align="left"><em>"TEGA is similar to the instrument that originally was provided for the Mars Polar Lander mission of 1999, which failed during descent. It consists of eight small ovens, each of which can hold a 0.030 ml sample of Mars regolith. The samples will be delivered to the instrument via a robotic arm that digs or grinds the sample from the martian surface. The samples are heated at a programmed ramp rate (typically 5 to 20 K/min) up to 1000&deg; C. As the sample is being heated, the required heat input is monitored to provide calorimeteric data on any phase transitions (This is the thermal analyzer). In addition, the evolved gases that are generated during the heating are analyzed with the evolved-gas analyzer (a magnetic sector mass spectrometer) to determine the composition of the gases released as a function of temperature."</em></p><p align="left">http://www.lpi.usra.edu/meetings/sulfates2006/pdf/7065.pdf</p></font><p>Additionally, here's a link to a longer description of the Polar Lander TEGA, which I thought is the same as the one flown on Phoenix :-</p><p>http://www.lpi.usra.edu/meetings/polar98/pdf/3047.pdf</p><p>&nbsp;</p><p>SK&nbsp; <img src="http://sitelife.space.com/ver1.0/Content/images/store/10/7/faf9e65b-aa06-4f77-87fc-ed314bda35e3.Medium.gif" alt="" /></p> <div class="Discussion_UserSignature"> <p><em><font size="2" color="#ff0000">Who is this superhero?  Henry, the mild-mannered janitor ... could be!</font></em></p><p><em><font size="2">-------------------------------------------------------------------------------------------</font></em></p><p><font size="5">Bring Back The Black!</font></p> </div>
 
M

MeteorWayne

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>http://phoenix.lpl.arizona.edu/06_06_pr.phpDoes anyone know how long it takes to run a sample through TEGA?Jon <br />Posted by jonclarke</DIV><br /><br />Jon, it's 4 days; but they may not be 4 continuous days, since there's lots of other tasks to do in between.</p><p>Sample was taken from Baby Bear, just to the right of Dodo. Next sample for microscope will come from same trench so they are examining the same material that goes into TEGA.</p><p>Commands have been approved to dump material into TEGA oven #1 (there are only 8).The oven is about the size of a pencil lead and about an inch (2.5 cm) long</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
3

3488

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">Jon, it's 4 days; but they may not be 4 continuous days, since there's lots of other tasks to do in between.Sample was taken from Baby Bear, just to the right of Dod. Next sample for microscope will come from same trrench so they are examining the same material that goes into TEGA.Commands have been approved to dump material into TEGA oven #1 (there are only 8).The oven is about the size of a pencil lead and about an inch (2.5 cm) long <br />Posted by MeteorWayne</font></DIV></p><p><strong><font size="2">Hi Wayne, that's correct. </font></strong></p><p><strong><font size="2">Total time spent on samples in the TEGA is 4 sols. As you said, the TEGA will not be working on the samples 24 / 7 as Phoenix has other important tasks such as weather monitoring & the completion of the high resolution pan, also top priorities. </font></strong></p><p><strong><font size="2">AFAIK the TEGA has to warm up in stages so during each incremental rise, Phoenix could be doing some other important task. <br /><br />However it will not be many sols before we know for sure if it is ice or Magnesium Kierserite in the sample. So really not long now, till we know. It's getting very exciting.</font></strong></p><p><strong><font size="2">I assume Odyssey is back on after the safing event?</font></strong></p><p><strong><font size="2">Below is an interesting image.</font></strong></p><p><strong><font size="2">It is a high res shot of the horizon @ azm 281 degrees & clearly shows hills. These hill are not large enough to show on the lower resolution though still incredible initial&nbsp;360 degree pan. When the whole thing is down, we will get a full flavour of the geology of the place. I can't wait.</font></strong></p><p><strong><font size="2" color="#000080">Hills on the horizon in the WNW.</font></strong><br /><img src="http://sitelife.space.com/ver1.0/Content/images/store/1/1/c10afc3c-7615-494d-b18d-0fcf26ca9487.Medium.jpg" alt="" /></p><p><strong><font size="2">Andrew Brown.</font></strong></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
3

3488

Guest
<p><font size="2" color="#000080"><strong>Looks like some soil has missed TEGA & a little has dropped on to&nbsp;the Messages from Earth DVD.</strong></font></p><p><font size="2"><strong>Not surpising as the scoop is large & is horizontal, where as the TEGA doors are narrow & vertical.<br /></strong></font><img src="http://sitelife.space.com/ver1.0/Content/images/store/3/11/7355ae13-33a6-4c3d-bbbc-d9c8ca8dfe2a.Medium.jpg" alt="" /></p><p><strong><font size="2" color="#000080">I've had a go at enlargening & contrast enhancing the hills in the WNW.</font></strong></p><p><strong><font size="2">Very amatuerish really as compared to Anthmartian, rlb2 & Swampcat.</font></strong></p><p><font size="2"><strong>It looks like that boulders are visible on the hills & a hint of&nbsp;some striations. It's a bit dusty so difficult to tell.</strong></font><br /><img src="http://sitelife.space.com/ver1.0/Content/images/store/6/12/56c996da-6161-488b-ac5b-1ebd80f5b2f7.Medium.jpg" alt="" /></p><p><strong><font size="2">At the bottom centre of the frame is what looks like a small impact crater, complete with layering??????<font color="#000000">&nbsp;Cant' wait to see more of the high res images come back.</font></font></strong></p><p><strong><font size="2">It's interesting to see how Phoenix is composed of spare components from other missions. The SSI is really a spare from Mars Pathfinder (has been uprated a bit, but sill essentally a clone of IMP Imager for Mars Pathfinder), the sampler arm & TEGA from the ill fated Mars Polar Lander. I guess that's why this mission did not cost a lot of money. Howver, its proving to be extremely effective. Very well done to all involved.</font></strong></p>http://www.photodump.com/Anonymous/WNW horizon Sol 12 Phoenix.html<p><strong><font size="2">Andrew Brown.</font></strong></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
3

3488

Guest
<p><font size="2" color="#000080"><strong>Colour image of soil on deck of Phoenix. Sol 11.</strong></font><br /><img src="http://sitelife.space.com/ver1.0/Content/images/store/3/3/531cb27c-633d-494b-b3cb-aefcfed3024f.Medium.jpg" alt="" /></p><p><font size="2" color="#000080"><strong>Soil on top of TEGA. Sol 11.</strong></font><br /><img src="http://sitelife.space.com/ver1.0/Content/images/store/15/3/7f9c863e-05b0-492b-8342-7bae0f3a0823.Medium.jpg" alt="" /></p><p><font size="2" color="#000000"><strong>Just received the following:</strong></font></p><p><font size="2" color="#800000">MEDIA RELATIONS OFFICE<br />JET PROPULSION LABORATORY<br />CALIFORNIA INSTITUTE OF TECHNOLOGY<br />NATIONAL AERONAUTICS AND SPACE ADMINISTRATION<br />PASADENA, CALIF. 91109 TELEPHONE 818-354-5011<br /></font><font size="2" color="#000080">http://www.jpl.nasa.gov</font><br /><br /><font size="2" color="#800000">Guy Webster 818-354-6278<br />Jet Propulsion Laboratory, Pasadena, Calif.<br /></font><font size="2" color="#000080">guy.webster@jpl.nasa.gov</font><br /><br /><font size="2" color="#800000">Dwayne Brown 202-358-1726<br />NASA Headquarters, Washington <br /></font><font size="2" color="#000080">dwayne.c.brown@nasa.gov</font><br /><br /><font size="2" color="#800000">Sara Hammond&nbsp; 520-626-1974<br />University of Arizona, Tucson<br /></font><font size="2" color="#000080">shammond@lpl.arizona.edu</font><br /><br /><font size="2" color="#800000">NEWS RELEASE: 2008-102&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; June 7, 2008<br />&nbsp;<br />NASA's Phoenix Mars Lander Checking Soil Properties <br />TUCSON, Ariz. -- The arm of NASA's Phoenix Mars Lander released a handful of clumpy Martian <br />soil onto a screened opening of a laboratory instrument on the spacecraft Friday, but the instrument <br />did not confirm that any of the sample passed through the screen.<br /><br />Engineers and scientists on the Phoenix team assembled at the University of Arizona are determining <br />the best approach to get some of that material into the instrument. Meanwhile, the team has <br />developed commands for the spacecraft to use cameras and the Robotic Arm on Saturday to study <br />how strongly the soil from the top layer of the surface clings together into clumps.<br /><br />Images taken Friday show soil resting on the screen over an open sample-delivery door of Phoenix's <br />Thermal and Evolved-Gas Analyzer, or TEGA, an instrument for identifying some key ingredients. <br />The screen is designed to let through particles up to one-millimeter (0.04 inch) across while keeping <br />out larger particles, in order to prevent clogging a funnel pathway to a tiny oven inside.&nbsp; An infrared <br />beam crossing the pathway checks whether particles are entering the instrument and breaking the <br />beam. <br /><br />The researchers have not yet determined why none of the sample appears to have gotten past the <br />screen, but they have begun proposing possibilities.<br /><br />"I think it's the cloddiness of the soil and not having enough fine granular material," said Ray <br />Arvidson of Washington University in St. Louis, the Phoenix team's science lead for Saturday and <br />digging czar for the mission. <br /><br />"In the future, we may prepare the soil by pushing down on the surface with the arm before scooping <br />up the material to break it up, then sprinkle a smaller amount over the door," he said. <br /><br />Another strategy under consideration is to use mechanical shakers inside the TEGA instrument <br />differently than the five minutes of shaking that was part of the sample-receiving process on Friday. <br />No activities for the instrument are planned for Saturday, while the team refines plans for diagnostic <br />tests.<br /><br />Phoenix's planned activities for Saturday include horizontally extending a trench where the lander <br />dug two practice scoops earlier this week, and taking additional images of a small pile of soil that was <br />scooped up and dropped onto the surface during the second of those practice digs.<br /><br />"We are hoping to learn more about the soil's physical properties at this site," Arvidson said. "It may <br />be more cohesive than what we have seen at earlier Mars landing sites."<br /><br />The Phoenix mission is led by Peter Smith at the University of Arizona with project management at <br />JPL and development partnership at Lockheed Martin, Denver. International contributions come from <br />the Canadian Space Agency; the University of Neuchatel, Switzerland; the universities of <br />Copenhagen and Aarhus, Denmark; Max Planck Institute, Germany; and the Finnish Meteorological <br />Institute. For more about Phoenix, visit:&nbsp; </font><font size="2" color="#000080">http://www.nasa.gov/phoenix</font><font size="2" color="#800000">&nbsp; and<br /></font><font size="2" color="#000080">http://phoenix.lpl.arizona.edu</font><font size="2" color="#800000">.<br /><br />-end-</font></p><p><font size="2" color="#800000"><font color="#000000"><strong>Andrew Brown.</strong></font><br /></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
3

3488

Guest
<p><font size="2" color="#000080"><strong>I've had a go @ enlargening suspected impact crater near the WNW horizon.</strong></font><br /><a href="http://sitelife.space.com/ver1.0/Forums/#" title="Click to view a larger photo" onclick="return gSiteLife.LoadForumPage('ForumImage', 'plckPhotoId', '0bbf0afd-7328-4655-b8a1-2e9feb857edb', 'plckRedirectUrl', gSiteLife.EscapeValue(window.location.href));"><img src="http://sitelife.space.com/ver1.0/Content/images/store/11/8/0bbf0afd-7328-4655-b8a1-2e9feb857edb.Medium.jpg" alt="" /><br /></p></a><p><strong><font size="2"><font color="#000080">Also tallest 'hill' on WNW horizon.</font>&nbsp;<br /></font></strong><a href="http://sitelife.space.com/ver1.0/Forums/#" title="Click to view a larger photo" onclick="return gSiteLife.LoadForumPage('ForumImage', 'plckPhotoId', 'a3be5f87-cc48-4e29-b682-08164b3f3873', 'plckRedirectUrl', gSiteLife.EscapeValue(window.location.href));"><img src="http://sitelife.space.com/ver1.0/Content/images/store/3/6/a3be5f87-cc48-4e29-b682-08164b3f3873.Medium.jpg" alt="" /></p></a><p><strong><font size="2">Andrew Brown.</font></strong>http://www.photodump.com/Anonymous/Hill WNW horizon Sol 12 Phoenix.html</p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
M

MeteorWayne

Guest
Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>I've had a go @ enlargening suspected impact crater near the WNW horizon.Posted by 3488</DIV><br /><br />Just wondering if you're overprocessing a few wayward bits? Time will tell! <img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-laughing.gif" border="0" alt="Laughing" title="Laughing" /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
F

freya

Guest
May be a problem with sample delivery. <div class="Discussion_UserSignature"> </div>
 
J

JonClarke

Guest
<p>The aperture of the experiments is so small, 1 mm, that the tiniest oversize fragment will clog them.&nbsp; The trouble is that many soils are composed of aggregates of grains that exceed 1 mm, and even whole grains.&nbsp; Just look at your garden soil to see this.&nbsp; Try passing e soil through a kitchen sieve (which is roughly 1 mm) and you will see the problem.&nbsp; Any soils, ices or moisture - all of which Phornix might find, and probably has found, will make the problem worse.</p><p>Using the scoop to "crush" the sample is aa work round, but it seems&nbsp;clumsy.&nbsp; Ideally there should have been a small crusher, I can't remember if&nbsp;there was one&nbsp;with Viking.</p><p>Jon</p><p>&nbsp;</p> <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>
 
W

wubblie

Guest
<p>Wow, 1mm. I was never really sure about the common sense in making these ovens so small, but that mesh size seems even worse. Even the electrostatic attraction between soil grains could cause them to clump up, and/or the electrostatic attraction between the grains and mesh may cause the grains to just "sit" on top of the mesh (especially plausible at 1/3 g). It doesn't look as though Viking passed the soil through a mesh, at least in this NASA schematic (courtesy of NASA).&nbsp; </p><p>&nbsp;</p><p><img src="file:///C:/DOCUME%7E1/Neal/LOCALS%7E1/Temp/moz-screenshot-3.jpg" alt="" /><img src="file:///C:/DOCUME%7E1/Neal/LOCALS%7E1/Temp/moz-screenshot-4.jpg" alt="" /><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/3/0/637e587f-1825-4d79-a054-9a8eaf2c7665.Medium.png" alt="" width="225" height="240" /><br /> </p>
 
J

JonClarke

Guest
<p><font size="2">Unmanned space missions are all about limited resources, specifically volume, mass and power.&nbsp; Phoenix is worse of than Viking in this regard, being as much smaller lander (348 vs 572 kg) Everything has to be miniaturised, just to make it on board.&nbsp; So far few (if any) missions have had &nbsp;experiments&nbsp;suffer overtly because of this (as far as&nbsp;I know), although the limited sample size and number of repeats does mean that precision is lower than it could be. But maybe this time we have been caught out.&nbsp; </font></p><p><font size="2">Jon</font></p> <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>
 
M

MeteorWayne

Guest
Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Unmanned space missions are all about limited resources, specifically volume, mass and power.&nbsp; Phoenix is worse of than Viking in this regard, being as much smaller lander (348 vs 572 kg) Everything has to be miniaturised, just to make it on board.&nbsp; So far few (if any) missions have had &nbsp;experiments&nbsp;suffer overtly because of this (as far as&nbsp;I know), although the limited sample size and number of repeats does mean that precision is lower than it could be. But maybe this time we have been caught out.&nbsp; Jon <br />Posted by jonclarke</DIV><br /><br />If I was betting, they'll find away around the problem Spacecraft science is all about overcoming difficulties, IMHO <img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-smile.gif" border="0" alt="Smile" title="Smile" /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
3

3488

Guest
<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">Just wondering if you're overprocessing a few wayward bits? Time will tell!Posted by MeteorWayne</font></DIV></p><p><font size="2" color="#000000"><strong>Could well be my friend. I saw what appears to be a small circular depression with layering near the WNW horizon. So you know me, I had to crop it out, enlarge it, etc. We will know for sure when the full product for that scene is released officially. </strong></font></p><p><font size="2" color="#000000"><strong>I find the martian landscapes fascinating, we have not had a boring one yet, with any of the six successful landers to date. Mind you I find any planetary body landscape fascinating.</strong></font></p><p>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">If I was betting, they'll find away around the problem Spacecraft science is all about overcoming difficulties, IMHO <br />Posted by MeteorWayne</font></DIV></p><p><font size="2"><strong>I agree completely. NASA have overcome far more difficult problems with effective solutions, such as the loss of the Jupiter Galileo High Gain Antenna, that was far more difficult to solve than the soil samples getting through the mesh of TEGA on Phoenix IMO. </strong></font></p><p><font size="2"><strong>This will be solved, I have absolutely no doubts, it will just require a bit of thought & some trial & error. I wonder if the soil is more heavily compacted, due to the weight of the Winter CO2 ice pressing on it?</strong></font></p><p><font size="2"><strong>Andrew Brown.</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
M

MeteorWayne

Guest
Replying to:<BR/><DIV CLASS='Discussion_PostQuote'> I wonder if the soil is more heavily compacted, due to the weight of the Winter CO2 ice pressing on it?Andrew Brown. <br />Posted by 3488</DIV><br /><br />Interesting idea, Andrew. Cheers! and good morning/afternoon.<img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-wink.gif" border="0" alt="Wink" title="Wink" /> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
Status
Not open for further replies.