**The most comprehensive collection of Shuttle, Ares, Orion and ISS related presentations and mission documentation, plus expansive daily processing documentation and updates are <\/em>available to download on L2<\/em><\/font> **<\/em><\/font><\/p>\n STS-122 L2 Special NOW LIVE. **Click here for sample of L2 menu and content**<\/font><\/em><\/p>\n <\/font>**STS-122 Special: 12 MOD Flight Readiness Review (FRR) Presentations, Baselines and Mission Overviews. 17 Shuttle FRR Presentations. **Click here for FRR overview articles: <\/font><\/em>Article 1<\/em><\/font><\/font> \u2013 <\/em><\/font>Article 2<\/em><\/font><\/font>**<\/em><\/font> Payload Presentations and vast amounts of live, uploaded images and presentations. Installation Movies (several) \u2013 already 2300 megabytes strong** <\/em><\/p>\n **COMPLETE Section \u2013 over 1000mbs of presentations \u2013 on ECO\/Feedthrough Connector issues and troubleshooting, graphical and data based \u2013 expansive.**<\/p>\n **LIVE updates on Atlantis STS-122 Troubleshooting Latest**<\/em><\/font><\/p>\n **LIVE updates on Discovery STS-124 Processing**<\/em><\/font><\/p>\n <\/u><\/em><\/p>\n NASA mission updates (adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n<\/p>\n **LIVE news updates on Endeavour STS-123 Processing**<\/font><\/em><\/p>\n STS-122 ECO related news content: *Scrub 1* \u2013 *MMT Debate* \u2013 *Scrub 2* \u2013 *Hale Memo* \u2013 *Forward Plan* \u2013 *Culprit Found* \u2013 *Tanking Test* \u2013 *Repair Options* \u2013 *MAF Plan* \u2013 *PRCB Debate* \u2013 *Plan Approved* \u2013 *Repair Schedule* \u2013 *Launch Date* \u2013 *New Issue* \u2013 *Hale Rallying Call* \u2013 *PRCB Launch Dates* \u2013 *New Connector Installed*<\/p>\n Over the weekend \u2013 while its replacement was being installed into ET-125 \u2013 engineers tested the removed connector in a simulation of the conditions of cryogenic tanking. <\/p>\n The hope was to find similar issues with the ECO data readouts that caused the scrub of the launch attempts late last year, so as to confirm the removed external feed-through hardware is the culprit. This exercise appears to have been successful. <\/p>\n \u2018Re-create the open circuit anomaly seen on STS-122 at ET-125 Feed-through with LH2, results: Helium Cryo Test: Circuit #2 showed signs of instability \u2013 10mv upward excursion,\u2019 noted test result documentation, acquired by L2.<\/p>\n \u2018LH2 Test #1: Circuit #4 showed signs of instability \u2013 Max around 250mv for 5 Minutes, around 9 minutes into Chill-down profile (-416 F). Max around 270mv for 45 minutes, and around 2 hours into Warm-up profile (-200 F): Isolated to circuit 4 excitation pin 35.<\/p>\n \u2018LH2 Test #2: Circuit #4 showing signs of instability \u2013 Max around 270mv for around 9 minutes into Chill-down profile (-416 F) Has not recovered (during test). Isolated to circuit 4 excitation pin 35. Circuit transitioned back during Warm-up.<\/p>\n \u2018LH2 Test #3: Circuit #4 intermittently opened shortly after cryo-shock. Open was controlled to Cryostat pressure (40 to 5 psig pressure cycles). TDR was monitoring circuit and captured open. Isolated to circuit 4 excitation pin 35.\u2019<\/p>\n More data will be gained from the results, likely to focus on the root cause, currently believed to be caused by the \u201crelative motion possible between socket and pin contacts\u201d. This issue should not occur with the replacement connector now inside ET-125, following a procedure to solder the pins in place.<\/p>\n The test schedule remains on track to support the re-aligned launch date target of NET (No Earlier Than) February 7, with the latest schedules on both testing and ET-125 repair, showing completion dates of January 28.<\/p>\n \u2018Splice\/Channelize Pigtails to W01 Harness was completed on Friday afternoon. Work continued throughout the weekend with Internal Connector mate to New Feedthru Assembly, Confidence Test being successfully performed,\u2019 noted processing information on Monday. <\/p>\n \u2018Feedthru Plate and Seal Leak Checks passing nominally and the ET LH2 Tank being repressurized. Fairing and Strut Cover installation will begin this morning. PDL Pour of Penetrations and subsequent cure will follow.\u2019<\/p>\n Allowing for the process of returning the vehicle into a launch posture, engineers have some flexibility, should the repair \u2013 such as cure time \u2013 suffer any related delays. **STARLIGHT: NEW STS-117 MISSION REVIEW MUSIC VIDEO** \u2013 STS-118 and STS-120 Mission review video also available.<\/font><\/em><\/font> <\/em><\/font><\/p>\n **ROCK YOU LIKE A HURRICANE: STS-117 MISSION REVIEW MUSIC VIDEO \u2013 AS SEEN BY THE STS-117 CREW!!**<\/font> -. Weekend testing of the removed ET-125 LH2 Feed-through connector resulted in \u201ccircuit instability\u201d on two ECO (Engine Cut Off) sensors during LH2 test runs at the Marshall Space Flight Center (MSFC). While testing will continue, these opening results add confidence to the initial data that pointed to the \u201cExternal Plug \/ Feed Through Receptacle Pin […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[],"class_list":["post-41505","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41505"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=41505"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41505\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<\/em><\/font>L2: STS-122 to STS-127 documentation already available.<\/em><\/font><\/p>\n
MSFC Test Results:<\/u><\/em> <\/p>\nThe LH2 Feed-through connector from ET-125 was removed from the tank before Christmas, before being shipped off to MSFC. Further tests \u2013 from visual to X-ray \u2013 were conducted, prior to its installation into a test area (Test Stand 300). <\/p>\n
\u2018Circuit #2 showing signs of instability. Max around 50mv, around 1 hour at stable temps (-416 F) Has not recovered (during test). Isolated to circuit 2 excitation pin 4. Circuit transitioned back during Warm-up<\/p>\n
<\/em>L2 members<\/em><\/font>: All documentation \u2013 from which the above article has quoted snippets \u2013 is available in full in the related L2 sections, updated live.<\/em><\/p>\n
(Video section is FREE, but you need to sign up as a member of the forum to enter the video section of the site. We only use your e-mail to send you your password. It will not be used for spam etc.)<\/em><\/font><\/em><\/font><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"