STS-125 Hubble Repair Mission (Atlantis) [May 2009?]

MeteorWayne · Sep 15, 2008

<p>Agree with both the last two posts. </p><p>They only get one shot at this mission, and if anything goes wrong, it could be the end of Hubble.</p><p>If there's a practice plan for this mission, follow it all the way through.</p><p>There will be no do-overs.</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>

montmein69 · Sep 15, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Well, looks like JSC isw being shutdown, and ISS operations have been moved to the backup control site (they are working on delaying docking of Progress til they get back to the main site after the storm).</DIV></p><p>Any news about the impact of the hurricane damages ..... on the russian Progress docking  ?</p><p>Could you confirm that JSC is the only one control site that may manoeuver the solar panels on the ISS ? I read that  was the reason for the delay : solar panels that could be damaged by the exhaust of the Progress control engines .. but I would like it to be confirmed</p><p> </p> <div class="Discussion_UserSignature"> </div>

Zipi · Sep 15, 2008

<p>Maybe a little or more offtopic to this thread, but as the article says: This is excatly the reason why we need devices like the Hubble telescope</p><p>http://gizmodo.com/5049896/hubble-finds-unidentified-object-in-space</p> <div class="Discussion_UserSignature"> </div>

emerrill · Sep 15, 2008

<p>According to The Flame Trench, NASA officials do not currently believe that the shutdown from Ike will delay the upcoming launches:</p><p>http://www.floridatoday.com/content/blogs/space/2008/09/nasa-target-launch-dates-still-doable.shtml</p><p> </p><p> </p> <div class="Discussion_UserSignature"> </div>

shuttle_guy · Sep 16, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Any news about the impact of the hurricane damages ..... on the russian Progress docking  ?Could you confirm that JSC is the only one control site that may manoeuver the solar panels on the ISS ? I read that  was the reason for the delay : solar panels that could be damaged by the exhaust of the Progress control engines .. but I would like it to be confirmed  <br />Posted by montmein69</DIV></p><p>Yes, the reason for the progress docking delay is as you describe. I have not heard if they have come up with an alternate plan or not.</p><p>I am sure the ISS crew would like to get their fresh fruit etc as soon as possible !</p> <div class="Discussion_UserSignature"> </div>

emerrill · Sep 16, 2008

<p>According to The FT, engineers are looking at replacing a chamber pressure sensor that gave unexpect readings during a test. It did not repeat the problem during a later test, so it is still being eveluated. The work can be done in parallel with other pad activities and is not expected to impact an Oct 10th launch data. Full article:</p><p>http://www.floridatoday.com/content/blogs/space/2008/09/booster-sensor-suspect-on-atlantis.shtml</p><p> </p><p>Question - My understanding is that SRB chamber pressure is the main determening factor for SRB sep - is that correct? I had also read somewhere that the STBs are designed to produce a slightly lower thrust on one side (ie one SRB produces more thrust than the other), to 'curve' the flight path - is that correct? </p> <div class="Discussion_UserSignature"> </div>

erioladastra · Sep 16, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Any news about the impact of the hurricane damages ..... on the russian Progress docking  ?Could you confirm that JSC is the only one control site that may manoeuver the solar panels on the ISS ? I read that  was the reason for the delay : solar panels that could be damaged by the exhaust of the Progress control engines .. but I would like it to be confirmed  <br />Posted by montmein69</DIV></p><p>Let me clarify and explain.  Last Thursday we activated the BCC Activation team (BAT).  BCC is the Backup COntrol Center.  The way it works is that the BAT is a quick deploy using laptops in a hotel near Austin.  Just a few people to monitor critical systems.  If we are going to be down for an extended period, or need more support, we activate the BCC in Huntsville.  There they use workstations and have a full suite of core tools.  But you don't have everything and you have a scaled down team of people.  There is less redundancy if JSC is powered down (it was not for Ike).  We knew on Friday that we would be at the BAT stage and could not support docking.  We talked about activating BCC then to support docking but BCC had never been used in real time (only tested), it is slower, a docking is a MAJOR activity and we decided we didn't want to push it.  Since then we have been developing the revised procedures, and more critically, the contingency procedures.  We are ready for it to dock tomorrow.  Then we will hand back to JSC Friday.</p>

emerrill · Sep 16, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Let me clarify and explain.  Last Thursday we activated the BCC Activation team (BAT).  BCC is the Backup COntrol Center.  The way it works is that the BAT is a quick deploy using laptops in a hotel near Austin.  Just a few people to monitor critical systems.  If we are going to be down for an extended period, or need more support, we activate the BCC in Huntsville.  There they use workstations and have a full suite of core tools.  But you don't have everything and you have a scaled down team of people.  There is less redundancy if JSC is powered down (it was not for Ike).  We knew on Friday that we would be at the BAT stage and could not support docking.  We talked about activating BCC then to support docking but BCC had never been used in real time (only tested), it is slower, a docking is a MAJOR activity and we decided we didn't want to push it.  Since then we have been developing the revised procedures, and more critically, the contingency procedures.  We are ready for it to dock tomorrow.  Then we will hand back to JSC Friday. <br /> Posted by erioladastra</DIV></p><p>Great info. Thanks! </p> <div class="Discussion_UserSignature"> </div>

montmein69 · Sep 17, 2008

Thanks Shuttle_guy and Erioladastra for your explanations. <div class="Discussion_UserSignature"> </div>

shuttle_guy · Sep 17, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>According to The FT, engineers are looking at replacing a chamber pressure sensor that gave unexpect readings during a test. It did not repeat the problem during a later test, so it is still being eveluated. The work can be done in parallel with other pad activities and is not expected to impact an Oct 10th launch data. Full article:http://www.floridatoday.com/content/blogs/space/2008/09/booster-sensor-suspect-on-atlantis.shtmlQuestion - My understanding is that SRB chamber pressure is the main determening factor for SRB sep - is that correct? I had also read somewhere that the STBs are designed to produce a slightly lower thrust on one side (ie one SRB produces more thrust than the other), to 'curve' the flight path - is that correct? <br />Posted by emerrill</DIV></p><p>Yes, SRB sep is commanded by the on board computers when the SRB chamber press falls below 50 psia. There are backup pressure sensors and a timer which will also initiate SRB sep.</p><p>No, the left and right SRB thrust curves are the same.   </p><p><br /><br /> </p> <div class="Discussion_UserSignature"> </div>

shuttle_guy · Sep 17, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>................ I had also read somewhere that the STBs are designed to produce a slightly lower thrust on one side (ie one SRB produces more thrust than the other), to 'curve' the flight path - is that correct? <br />Posted by emerrill</DIV></p><p>You may be thinking of a problem that was seen on the last flight where one SRB thrust did not decay the same as the other. The thrust "tail off" was in spec. however it was larger than any seen before. The result was a attitude rate was induced into the vehicle which was nulled out by the vehicle flight control system. The cause is under investigation.</p><p> </p> <div class="Discussion_UserSignature"> </div>

shuttle_guy · Sep 17, 2008

<div dir="ltr" align="left"><font face="Arial" size="2" color="#0000ff"><span class="430291618-17092008">This late-breaking SSPF (Space Station Processing Facility) incident could wind up changing the payload installation plans for this weekend. </span></font></div><div dir="ltr" align="left"><font face="Arial" size="2" color="#0000ff"></font></div><div dir="ltr" align="left"><font face="Arial" size="2" color="#0000ff"><span class="430291618-17092008">The payload was to be transported to the pad Friday.</span></font></div><div class="Section1"><div><font face="Arial" size="2" color="#0000ff"><span style="font-size:10pt;color:blue;font-family:Arial">A contamination incident occurred this morning on the SLIC payload  - Super Lightweight Interchangeable Carrier. The carrier holds Hubble’s newest camera, the 980 lb Wide Field Camera 3 and two new batteries.  A GSE line came loose from the a non flight enclosure that provided high pressure purge air to the Hubble batteries  - the pressure in the line then impinged on  TCS blankets and foam that secures the batteries causing particles to be introduced into the SLIC containment bag.  This will delay the delivery of the payload to the pad at least 48 hours – and likely longer once they determine the extent of the contamination.</span></font><font face="Arial" size="2" color="#0000ff"><span style="font-size:10pt;color:blue;font-family:Arial"> </span></font><font face="Arial" size="2" color="#0000ff"><span style="font-size:10pt;color:blue;font-family:Arial">I just got this info from hallway talk  - If I see a write from the payloads guys...........  </span></font><font face="Arial" size="2" color="#0000ff"><span style="font-size:10pt;color:blue;font-family:Arial">This ic not good since the payload pad flow is very tight with very little contingency time.</span></font><font face="Times New Roman" size="2"><span style="font-size:10pt"> </span></font></div></div> <div class="Discussion_UserSignature"> </div>

bpcooper · Sep 17, 2008

<p>Looks like we may have lost the photo op of both towers being back. </p><p>The Hubble payloads are in the PHSF by the way. </p> <div class="Discussion_UserSignature"> <p>-Ben</p> </div>

shuttle_guy · Sep 17, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Looks like we may have lost the photo op of both towers being back. The Hubble payloads are in the PHSF by the way. <br />Posted by bpcooper</DIV></p><p>Thanks for the correction Ben.</p><p>By The Way the "towers" are the RSSs (Rotating Service Structures)<img src="http://sitelife.space.com/ver1.0/content/scripts/tinymce/plugins/emotions/images/smiley-wink.gif" border="0" alt="Wink" title="Wink" /> </p><p> </p> <div class="Discussion_UserSignature"> </div>

emerrill · Sep 17, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>This late-breaking SSPF (Space Station Processing Facility) incident could wind up changing the payload installation plans for this weekend....<br /> Posted by shuttle_guy</DIV></p><p>TFT just posted:</p><p>http://www.floridatoday.com/content/blogs/space/2008/09/loose-insulation-may-slip-atlantis.shtml </p> <div class="Discussion_UserSignature"> </div>

bpcooper · Sep 17, 2008

Rollout of Endeavour has been postponed to Friday due to weather. The photo op could be back on if they get that issue cleared in time. <div class="Discussion_UserSignature"> <p>-Ben</p> </div>

shuttle_guy · Sep 18, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>This late-breaking SSPF (Space Station Processing Facility) incident could wind up changing the payload installation plans for this weekend. The payload was to be transported to the pad Friday.A contamination incident occurred this morning on the SLIC payload  - Super Lightweight Interchangeable Carrier. The carrier holds Hubble’s newest camera, the 980 lb Wide Field Camera 3 and two new batteries.  A GSE line came loose from the a non flight enclosure that provided high pressure purge air to the Hubble batteries  - the pressure in the line then impinged on  TCS blankets and foam that secures the batteries causing particles to be introduced into the SLIC containment bag.  This will delay the delivery of the payload to the pad at least 48 hours – and likely longer once they determine the extent of the contamination. I just got this info from hallway talk  - If I see a write from the payloads guys...........  This ic not good since the payload pad flow is very tight with very little contingency time.  <br />Posted by shuttle_guy</DIV></p><p> </p><p>The payload group reports that they expect to move the payload to the pad at 0001 hours Sunday which is about</p><p>32 hours behind schedule. </p> <div class="Discussion_UserSignature"> </div>

emerrill · Sep 18, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'> The payload group reports that they expect to move the payload to the pad at 0001 hours Sunday which is about32 hours behind schedule. <br /> Posted by shuttle_guy</DIV></p><p>So does this mean that contamination to the actual instrument was minimal (ie crap got in the back, but not on/in the camera assembily? Seems like a reasonabaly quick turnaround. </p> <div class="Discussion_UserSignature"> </div>

shuttle_guy · Sep 19, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>So does this mean that contamination to the actual instrument was minimal (ie crap got in the back, but not on/in the camera assembily? Seems like a reasonabaly quick turnaround. <br />Posted by emerrill</DIV></p><p>Yes, the contamination was easily cleaned up. As of now, the payload may move to the pad earlier than early Sunday.</p> <div class="Discussion_UserSignature"> </div>

shuttle_guy · Sep 21, 2008

<p>Processing is being performed with no reported problems. In the next few days payload installation into the Orbiter will take place followed by a launch countdown practice run with the crew on Wednesday.</p> <div class="Discussion_UserSignature"> </div>

shuttle_guy · Sep 21, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Processing is being performed with no reported problems. In the next few days payload installation into the Orbiter will take place followed by a launch countdown practice run with the crew on Wednesday. <br />Posted by shuttle_guy</DIV></p><p> </p><p>UPDATE:</p><p>The payload team is having a problem loading the payload into the Payload Changeout Room at the pad. It appears that they need to take the payload cannister back to the transporter.</p> <div class="Discussion_UserSignature"> </div>

earth_bound_misfit · Sep 21, 2008

Any idea how much this could delay things SG? <div class="Discussion_UserSignature"> <p> </p><p> </p><p>----------------------------------------------------------------- </p><p>Wanna see this site looking like the old SDC uplink?</p><p>Go here to see how: <strong>SDC Eye saver </strong> </p> </div>

shuttle_guy · Sep 21, 2008

<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Any idea how much this could delay things SG? <br />Posted by earth_bound_misfit</DIV></p><p> </p><p>That is to be determined...................<br /></p> <div class="Discussion_UserSignature"> </div>

SM4_Engineer · Sep 22, 2008

http://www.nasa.gov/images/content/271560main_08pd2730.jpg <div class="Discussion_UserSignature"> </div>

emerrill · Sep 22, 2008

<p>Any new news on the timeline front?</p><p>Thanks </p><p> </p> <div class="Discussion_UserSignature"> </div>

STS-125 Hubble Repair Mission (Atlantis) [May 2009?]

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