{"id":41388,"date":"2008-06-08T17:23:46","date_gmt":"2008-06-08T09:23:46","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/eva-3-checks-sarj-relocates-nta-endeavour-apu-changeout\/"},"modified":"2008-06-08T17:23:46","modified_gmt":"2008-06-08T09:23:46","slug":"eva-3-checks-sarj-relocates-nta-endeavour-apu-changeout","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/eva-3-checks-sarj-relocates-nta-endeavour-apu-changeout\/","title":{"rendered":"EVA-3 checks SARJ, relocates NTA \u2013 Endeavour APU changeout"},"content":{"rendered":"<p>The third and final EVA of STS-124 has ended, after Mike Fossum and Ron Garan were tasked with the removal and replacement of the Nitrogen Tank Assembly (NTA) , and further detective work on the port SARJ (Solar Alpha Rotary Joint).\n<\/p>\n<p>  Meanwhile, the removal and replacement of Auxiliary Power Unit (APU 3) on Endeavour will lead to a hot fire of the system, ahead of her launch on either LON (Launch On Need) STS-400 or STS-126.\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><img loading=\"lazy\" decoding=\"async\" height=\"139\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/forums\/get-attachment.asp?action=view&amp;attachmentid=31173\" width=\"212\" align=\"left\" vspace=\"5\" border=\"0\/\"><\/em><\/font><em><font color=\"#0033ff\">**Click&nbsp;here for sample of L2 menu and content**<\/font><\/em><font color=\"#ff0000\" size=\"3\"><\/font><font size=\"2\"><em><\/em><\/font><\/p>\n<p>**<font color=\"#ff0000\" size=\"3\"><\/font><font size=\"2\"><em>STS-124 Sub Section (over 2900mb already) \u2013 Includes Flight Plans, S0007 Documents. Mission Overview&nbsp;CGI Videos.&nbsp;Plus&nbsp;25 Flight Readiness Review (FRR) Presentations,&nbsp;a multitude&nbsp;of mission presentations&nbsp;and extensive, live,&nbsp;processing flashes, updates. MMT level&nbsp;Live Flight Day Coverage has begun.<\/em><\/font><\/p>\n<p>RPM, ET Umbilical Well, 40 Pad Damage Images (Exclusives) and 120mb Engineering Replays of Launch.&nbsp; Super Hi Res EVA images. Several stunning TPS Evalaution Images that include all RPM and Tile evaluation images and data \u2013 now available.<\/p>\n<p>**STS-125\/LON-400 Sub Section Special already over 1600mb 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.<font size=\"3\"><\/font><\/p>\n<p><font color=\"#0000ff\" size=\"2\"><em>**STS-124 LIVE FLIGHT DAY SPECIFIC UPDATE PAGES (The most extensive live coverage on the net)**<\/em><\/font><\/p>\n<p>Technology News<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>Company News<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 size=\"2\"><em>**STS-124 News Articles**<\/em><\/font><\/p>\n<p><em>**ALL STS-124 NASA TV videos (media briefings, booster videos, flight day highlights etc. Available and downloadable for FREE**<\/em><br \/><em><u><\/u><\/em><\/p>\n<p>STS-124 Flight Day 9:<\/p>\n<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" height=\"125\" alt=\"\" hspace=\"5\" src=\"http:\/\/content.nasaspaceflight.com\/library\/1016\/AdBanners\/ssms2007.gif\" width=\"125\" align=\"left\" vspace=\"5\" border=\"0\/\"><\/p>\n<p>With Flight Day 9 marking the final spacewalk of the mission, the vehicles continue to perform well, with no significant issues under evaluation by the Mission Management Team (MMT).<\/p>\n<p>EVA-3 began around 45 minutes ahead of the timeline, with the first task involving the relocation of the spare NTA located on External Stowage Platform (ESP) to the Starboard 1 (S1) Truss, replacing an old NTA.<\/p>\n<p>During this operation, the crew on the International Space Station (ISS) will not be allowed to undergo any un-isolated exercise.<\/p>\n<p>Pre-empting the mission, the spacewalkers also had the option of donning the Overgloves \u2013 which protect their gloves from cuts \u2013 for the spacewalk, which would have added difficulty to the NTA element of the EVA.<\/p>\n<p>\u2018Overgloves may be removed per crew preference for the following NTA prep tasks: QD (Quick Disconnect) ops and thermal cover installation and electrical connector ops,\u2019 noted the STS-124 EVA Flight Readiness Review Presentation on L2. <\/p>\n<p>\u2018Do not wear overgloves while holding the NTA on the SSRMS (Space Station Remote Manipulator 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=78738;image\" width=\"239\" align=\"left\" vspace=\"5\" border=\"0\/\"><em><font color=\"#0033ff\">**New 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>\u2018Safety issue: Lack of tactile feel during SSRMS maneuvers with NTA increases risk of losing NTA and possible subsequent vehicle damage. Overgloves will be worn at all other times during the EVA unless crew fatigue\/safety is at risk.\u2019<\/p>\n<p>However, thanks to the successful use of the modified EMU gloves, the use of the Overgloves have not been required.<\/p>\n<p>Following the S1 NTA install, the SRMS (Shuttle Remote Manipulator System) was moved to the final JEM (Japanese Experiment Module) RMS deploy viewing position.<\/p>\n<p>Though documented ahead of the mission as a get-ahead, the requirement to reinspect the port SARJ has gained importance, following observations of what appears to be grease on the race ring. <\/p>\n<p>At present, engineers do not know where the grease is coming from, though it may be leaking from the associated Trundle Bearing Assembly (TBA). <\/p>\n<p>However, the port SARJ does not appear to be suffering from the same problems as noted on the starboard SARJ, though samples will be taken for further evaluations once Discovery returns home. Currently the port SARJ is operating without issue.<\/p>\n<p>Those evaluations will continue to focus on the forward plan for the starboard SARJ, which has suffered a divot \u2013 itself a big problem \u2013 as a repair will be required to get that SARJ working again.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" height=\"131\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/forums\/get-attachment.asp?action=view&amp;attachmentid=33513\" width=\"176\" align=\"left\" vspace=\"5\" border=\"0\/\">Evaluations into the starboard SARJ has been ongoing since inspections back on STS-120\u2019s mission, which found metallic shavings \u2013 consisting of 1505 Nitride material \u2013 that had been grinding away from the race rings.<\/p>\n<p>Other tasks included the JEM RMS Wrist\/Elbow Vision Equipment (WVE\/EVE) MLI and Launch Lock removal, the JEM Aft Window Launch Lock removal, R&amp;R of the External Television Camera Group (ETVCG), and deployment of MMOD (Micro-Meteoroid Orbital Debris) shields.<\/p>\n<p><b><i><u>Endeavour Status:<\/u><\/i><\/b><\/p>\n<p>A large amount of work in ongoing inside Endeavour\u2019s Orbiter Processing Facility (OPF), as she undergoes the removal and replacement of her APU 3.<\/p>\n<p>Stood down from primary LON responsibilities associated with STS-124 (major article relating to this on site Monday), Endeavour is being processed for her role as the rescue orbiter (LON\/STS-400)&nbsp;to support STS-125, and her primary mission of STS-126 \u2013 the latter currently scheduled for November 10.<\/p>\n<p>While her booster set are being \u2018built up\u2019 ahead of stacking in the Vehicle Assembly Building (VAB) around July 14, work began on replacing APU 3 on Saturday.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" height=\"195\" alt=\"\" hspace=\"5\" src=\"http:\/\/forum.nasaspaceflight.com\/forums\/get-attachment.asp?action=view&amp;attachmentid=44509\" width=\"293\" align=\"left\" vspace=\"5\" border=\"0\/\">\u2018APU 3 lube oil offload and purge was accomplished Thursday; preps continue Friday in support of the SCAPE (Self-Contained Atmospheric Protection Ensemble) ops Saturday to R&amp;R the APU,\u2019 noted the latest processing report on L2.<\/p>\n<p>Due to the changeout of an APU, Endeavour will be required to undergo a hot fire to validate the system.<\/p>\n<p>Each orbiter has three APUs \u2013 which produces pressure for the orbiter\u2019s hydraulic system that controls the vehicle\u2019s wing flaps, rudder, body flap and landing gear, among other elements of the vehicle. <\/p>\n<p>She was also powered up this past week for SSPTS (Station to Shuttle Power Transfer System) testing, while work continued with the Standard Mixed Cargo Harness (SMCH) configuration in her midbody.<\/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>Click here for a range of superb&nbsp;STS mission specific music videos created by Max Q videos&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The third and final EVA of STS-124 has ended, after Mike Fossum and Ron Garan were tasked with the removal and replacement of the Nitrogen Tank Assembly (NTA) , and further detective work on the port SARJ (Solar Alpha Rotary Joint). Meanwhile, the removal and replacement of Auxiliary Power Unit (APU 3) on Endeavour will [&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-41388","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41388"}],"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=41388"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41388\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}