{"id":41329,"date":"2008-08-18T19:35:01","date_gmt":"2008-08-18T11:35:01","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/atlantis-waits-on-the-weather-endeavours-faulty-valve-in-focus\/"},"modified":"2008-08-18T19:35:01","modified_gmt":"2008-08-18T11:35:01","slug":"atlantis-waits-on-the-weather-endeavours-faulty-valve-in-focus","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/atlantis-waits-on-the-weather-endeavours-faulty-valve-in-focus\/","title":{"rendered":"Atlantis waits on the weather \u2013 Endeavour\u2019s faulty valve in focus"},"content":{"rendered":"<p>Due to poor weather relating to Tropical Storm Fay, Atlantis remains in her Orbiter Processing Facility (OPF-1), with rollover now likely to be rescheduled for Thursday \u2013 with the Kennedy Space Center closing on Tuesday.\n<\/p>\n<p>  Meanwhile, in OPF-2, Endeavour is undergoing a major troubleshoot on an O2 System 2 Pressure Transducer valve, which requires an aggressive replacement schedule to protect STS-400 processing milestones.\n<\/p>\n<p><em><img fetchpriority=\"high\" decoding=\"async\" height=\"129\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/forums\/get-attachment.asp?action=view&amp;attachmentid=13910\" width=\"600\" align=\"left\" vspace=\"5\" border=\"0\/\"><\/em><\/p>\n<p><em>**The most comprehensive collection&nbsp;of&nbsp;Shuttle, Ares, Orion&nbsp;and ISS&nbsp;related presentations and mission documentation, plus expansive daily processing documentation and updates&nbsp;are&nbsp;<\/em><font color=\"#0000ff\"><em>available to download&nbsp;on L2<\/em><\/font><font color=\"#0000ff\"><em>&nbsp;**<\/em><\/font><\/p>\n<p><font color=\"#ff0000\"><em><font color=\"#ff0000\"><em><img loading=\"lazy\" decoding=\"async\" height=\"182\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/index.php?action=dlattach;topic=2859.0;attach=83887;image\" width=\"240\" align=\"left\" vspace=\"5\" border=\"0\/\"><\/em><\/font><\/em><\/font><font color=\"#0033ff\"><em>**Click&nbsp;here for sample of L2 menu and content**<\/em><\/font><font color=\"#ff0000\" size=\"3\"><\/font><font size=\"2\"><\/font><\/p>\n<p><em>**<\/em><font color=\"#ff0000\" size=\"3\"><\/font><font size=\"2\"><em>STS-125\/LON-400 L2 Sub Section Special already over 1750mb in size \u2013 special section Now Live, with over&nbsp;40 superb mission presentations. STS-125 Flight Plan (newly created) and Flight Data Files now uploaded. Mission Overview in CGI&nbsp;videos building up \u2013 starting with payload overviews.&nbsp;STS-400 Flight Plan. STS-400 EVA and mission overview Presentations (14). Daily extensive processing latest.<\/em><\/font><\/p>\n<p><font size=\"3\"><em><font size=\"2\">**L2 STS-126 in build-up \u2013 includes several mission baseline presentations. One Stop SARJ Shop (memo, presentations). Extensive daily processing reports etc.**<\/font><\/em><\/font><\/p>\n<p><font color=\"#0000ff\" size=\"2\"><em>**STS-124 Post Flight \u2013 STS-119 Processing Latest**<\/em><\/font><font color=\"#000000\">&nbsp;\u2014 <\/font><font size=\"2\"><em>**STS-124\/STS-119 News Articles**<\/em><\/font><\/p>\n<p><font color=\"#0000ff\" size=\"2\"><em>**LIVE updates: Endeavour&nbsp;Dual LON and STS-126 Processing**<\/em><\/font><\/p>\n<p>Aerospace industry analysis<path d=\"M7.59009 18.59L9.00009 20L17.0001 12L9.00009 4L7.59009 5.41L14.1701 12\" style=\"animation: initial !important; background: initial !important; border: 0px !important; box-shadow: none !important; color: inherit !important; cursor: inherit !important; direction: inherit !important; display: inline !important; fill: currentcolor !important; filter: initial !important; float: none !important; margin: 0px !important; opacity: initial !important; outline: 0px !important; overflow: initial !important; padding: 0px !important; stroke: initial !important; transform: initial !important; vertical-align: initial !important; visibility: inherit !important;\"><\/path>SpaceX<path d=\"M7.59009 18.59L9.00009 20L17.0001 12L9.00009 4L7.59009 5.41L14.1701 12\" style=\"animation: initial !important; background: initial !important; border: 0px !important; box-shadow: none !important; color: inherit !important; cursor: inherit !important; direction: inherit !important; display: inline !important; fill: currentcolor !important; filter: initial !important; float: none !important; margin: 0px !important; opacity: initial !important; outline: 0px !important; overflow: initial !important; padding: 0px !important; stroke: initial !important; transform: initial !important; vertical-align: initial !important; visibility: inherit !important;\"><\/path>Aerospace &amp; Defense<path d=\"M7.59009 18.59L9.00009 20L17.0001 12L9.00009 4L7.59009 5.41L14.1701 12\" style=\"animation: initial !important; background: initial !important; border: 0px !important; box-shadow: none !important; color: inherit !important; cursor: inherit !important; direction: inherit !important; display: inline !important; fill: currentcolor !important; filter: initial !important; float: none !important; margin: 0px !important; opacity: initial !important; outline: 0px !important; overflow: initial !important; padding: 0px !important; stroke: initial !important; transform: initial !important; vertical-align: initial !important; visibility: inherit !important;\"><\/path>\n<p>     (adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n<p><font color=\"#0000ff\" size=\"2\"><em>**LIVE updates on Atlantis&nbsp;STS-125 Processing Flow**<\/em><\/font><font color=\"#000000\">&nbsp;\u2014 <\/font><font size=\"2\"><em>**STS-125 News Articles**<\/em><\/font><\/p>\n<\/p>\n<p><u><em>Atlantis\/STS-125 Latest:<\/em><\/u><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" height=\"208\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/index.php?action=dlattach;topic=3773.0;attach=93679;image\" width=\"199\" align=\"left\" vspace=\"5\" border=\"0\/\">Atlantis is now issue free, following the successful resolution to a problem relating to the raising of her Nose Landing Gear (NLG) and door closure for rollover.<\/p>\n<p>That came following weekend teleconferences involving Boeing and JSC Engineering, which confirmed analysis in the OPF showed no damage to the hardware during the original problematic raising of the gear. The gear was then successfully raised on Saturday. <\/p>\n<p>\u2018Orbiter: OV-104 (OPF Bay 1) Nose Landing Gear (NLG) will not retract update: Additional NLG inspections were performed Friday; results were analyzed and cleared for flight,\u2019 noted processing information on Monday. \u2018The NLG was closed for flight on Saturday.\u2019<\/p>\n<p>Atlantis was due to rollover to the Vehicle Assembly Building (VAB) at 8am on Monday. However, due to weather relating to TS Fay, this has been delayed to NET (No Earlier Than) Tuesday morning.<\/p>\n<p>\u2018VAB rollover and S0004 Orbiter\/ET Mate were called off for today due to the threat from TS Fay. Rollover has been rescheduled for NET tomorrow.\u2019<\/p>\n<p>However, this is likely to take place on Thursday, given the interruptions to the flow relating to rolling over prior to a storm \u2013 which is due to affect the area over Tuesday and Wednesday \u2013 would result leaving Atlantis hanging next to the stack in the VAB.<\/p>\n<p>With 11 days of contingency in the flow, managers are likely to wait until the storm passes, in order to allow a smooth transition from OPF, to VAB, to mating operations with ET-127 and the twin Solid Rocket Boosters (SRBs).<\/p>\n<p>\u2018External Tank: ET-127; SRB \/ RSRM: BI-135 \/ RSRM-103 (VAB HB-3) Integrated work continues as follows: C, E and B platform retracts are complete in preparation for S0004. D platform retract and 17\u201d cover plate removals have been delayed to NET today pending weather decision.\u2019<\/p>\n<p><em><u>Endeavour STS-400\/126 Latest:<br \/><\/u><\/em><br \/>Work through the weekend also took place on Endeavour, with three items of interest relating to her flow towards supporting her older sister Atlantis \u2013 as the STS-400 LON (Launch On Need) contingency shuttle.<\/p>\n<p>The first item is already near-resolved, as the bent line on Fuel Cell 3 (FC3) was removed, with a new line welded into place. Work on this issue will move into leak checks this week.<\/p>\n<p>\u2018Orbiter: OV-105 (OPF Bay 2): PLB (Payload Bay) Doors were closed as a precaution for Hurricane Condition (HURCON) IV. Fuel Cell 3 bent cooling line update: The line was R&amp;R\u2019d, and the new line was brazed in on Saturday,\u2019 added processing reports on Monday.<\/p>\n<p>\u2018X-rays and mass spec leak checks will be performed today (Monday), followed by fuel cell coolant loop servicing tomorrow.\u2019<\/p>\n<p>As reported on Saturday, a new issue has been noted with Endeavour \u2013&nbsp;which has a threat to the STS-400 schedule. This relates to an O2 crossfeed valve in the ECLSS (Environmental Control and Life Support System) system.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" height=\"170\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/index.php?action=dlattach;topic=3993.0;attach=78737;image\" width=\"239\" align=\"left\" vspace=\"5\" border=\"0\/\"><em><font color=\"#0033ff\">**L2 Trailer Video, with examples of L2 content&nbsp;\u2013 <\/font><font color=\"#ff0000\">TRAILER NOW AVAILABLE \u2013 CLICK IMAGE**<\/font><\/em><\/p>\n<p>Alternatively <font color=\"#0000ff\">**CLICK HERE**<\/font> For the free trailer for the 1,900mb L2 video of an exclusive tour of the VAB, OPF and Pad.<\/p>\n<p>The ECLSS consists of an air revitalization system, water coolant loop systems, atmosphere revitalization pressure control system, active thermal control system, supply water and waste water system, waste collection system and airlock support system. <\/p>\n<p>These systems interact to provide a habitable environment for the flight crew in the crew compartment in addition to cooling or heating various orbiter systems or components. <\/p>\n<p>The system consists of two Freon-21 coolant loops, cold plate networks for cooling electronic avionics units, liquid\/liquid heat exchangers for cooling various orbiter systems, and four heat sink systems for rejecting excess heat outside the orbiter-ground support equipment heat exchanger, flash evaporators, radiator panels and ammonia boilers.<\/p>\n<p>\u2018Off Nominal O2 System 2 Pressure Transducer update: Troubleshooting revealed the system 2 valve behaves erratically when in a high flow condition\/pressure delta. Both valves are required for flight,\u2019 added processing information. <\/p>\n<p>\u2018If required, valve replacement would require panel MO10W R&amp;R; pending further troubleshooting and evaluation.\u2019<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" height=\"165\" alt=\"\" hspace=\"5\" src=\"http:\/\/www.nasa.gov\/images\/content\/113754main_coolant_eclss.jpg\" width=\"141\" align=\"left\" vspace=\"5\" border=\"0\/\">The faulty valve is located in what is called the N2\/02 panel \u2013 which is located in the middeck, near the orbiter\u2019s toilet. Engineers have been working through the weekend to access the box containing the valve. <\/p>\n<p>The system\u2019s valve will be tested in full via a BOB (Break Out Box), which will electrically test the valve for specific faults&nbsp;\u2013 though it seems certain that the valve will be replaced. Such a replacement is not available as a spare at KSC until October, thus a donation from Discovery will be required.<\/p>\n<p>The fault was noticed as part of the 10 day ECLSS GN2 decay test \u2013 which started on Friday. Impacts to the schedule for Endeavour\u2019s rollover to the VAB next month will be evaluated as the system is repaired.<\/p>\n<p>Other work taking place in OPF-2 includes the Main Landing Gear (MLG) strut hydraulic level checks, which will be performed today. The Main Engines (SSMEs) will also be configured for rollover, while the brake anti-skid and nose wheel steering checkout will pick up on Tuesday.<\/p>\n<p><em><u>ET-129 Latest:<\/u><\/em><\/p>\n<p>Over in the VAB, evaluations into the metallic noise \u2013&nbsp;heard from inside External Tank (ET-129) during the transition to the horizontal \u2013&nbsp;has yet to find any items of interest&nbsp;via X-ray checks thus far.<\/p>\n<p>\u2018External Tank: ET-129 (VAB HB-2E) update: X-rays are complete to date. No FOD (Foreign Object Debris) noted on LO2\/LH2 feedlines or press lines,\u2019 noted updated status on Monday.<\/p>\n<p>Visual inspections at the base of the LOX feedline through the umbilical will take place this week, prior to borescope inspections, though operations are being interrupted by TS Fay.<\/p>\n<p>\u2018Intertank Access Kit installation is in work along with borescoping as the access is installed. Tank vent, visual inspections of feedlines, and LO2\/LH2 17\u201d flapper valve verification\/inspections are on hold due to T\/S Fay.\u2019<\/p>\n<p>Engineers are also evaluating minor foam damage to the tank due to a fault with a personnel lifting device.<\/p>\n<p><em><font color=\"#0000ff\">L2 Members: Refer to TAG keywords \u2018STS-400\u2019, \u2018ET-129\u2019&nbsp;and&nbsp;\u2018STS-126\u2019 for daily processing updates, baselines and presentations, etc.<\/font><\/em><\/p>\n<p><font color=\"#0000ff\"><em>L2 members<\/em><\/font><em>: All documentation&nbsp;\u2013 from which the above article has quoted snippets \u2013 is available in full in the related L2 sections, updated live.<\/em><\/p>\n<p><em>**BRAND NEW STS-124 MISSION OVERVIEW MUSIC VIDEO \u2013 AVAILABLE HERE** (Free Video Section \u2013 Only requires to be logged into the forum)<br \/><\/em><br \/><em>Click here for a range of superb&nbsp;STS mission specific music videos created by Max Q videos<\/em><em>&nbsp;<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Due to poor weather relating to Tropical Storm Fay, Atlantis remains in her Orbiter Processing Facility (OPF-1), with rollover now likely to be rescheduled for Thursday \u2013 with the Kennedy Space Center closing on Tuesday. Meanwhile, in OPF-2, Endeavour is undergoing a major troubleshoot on an O2 System 2 Pressure Transducer valve, which requires an [&hellip;]<\/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-41329","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41329"}],"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=41329"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41329\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}