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The MMT decided to extend the mission by a day in order to support STS-126\u2019s crew efforts in finding a solution to problems that have been encountered with the hardware that is vital for the six person crew next year.<\/p>\n
According to the Flight Day 11 MMT Minutes \u2013 available in L2\u2019s expansive coverage of STS-126 \u2013 the extension by one day, resulting in a Sunday landing on a nominal EOM (End Of Mission), was always in their back pocket.<\/p>\n
\u201cAlways planned for extension day and we told folks to plan for it,\u201d noted MMT chair Leroy Cain. \u201cNo issues Orbiter is working that would have any issues with staying up another day.<\/p>\n
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\u201cNo concerns with extra day, ISS sleep shift and Progress docking, comfortable with the off duty time that was scheduled,\u201d added Crew Office Brett Jett.<\/p>\n
During the MMT, Mr Cain asked for any issues with the extension to aid his final decision. The only reference of note came with regards to the ISS crew\u2019s workload, with the next Russian Progress soon to launch to the Station.<\/p>\n
\u201cSome concern for the violation of GGRC (progress launching during docked ops loop hole) hoping to get ISS crew half day off to help ease this concern,\u201d noted Space and Life Sciences (S&LS). \u201cGood from sleep shift and when progress docks at Nadir after crew wake up.\u201d<\/p>\n
\u201cISS supports the half day off and the team should be working towards that,\u201d answered ISS program manager Kirk Shireman.<\/p>\n
This led to Mr Cain decision that they would \u201cofficially extend a Day and defer the Entry briefing until Friday.\u201d<\/p>\n
The problem with the WRS is specific to the Urine Processing Assembly, which shuts down after just a few hours of run time.<\/p>\n
Monday\u2019s plan has been to hard mount to structure to see if can isolate the vibration that is understood to be causing the centrifuge to undergo thermal variations \u2013 resulting in a shutdown \u2013 then refill and restart processing. This has now been completed.<\/p>\n
If \u2013 in the worst case scenario \u2013 the assembly needs to be returned, the MMT noted they are looking at MPLM stowage if required to bring it home.<\/p>\n
\u201cHaving issues with the distillation assembly of the urine processor. On Spacehab flight a unit flew with no issues hard mounted for four days,\u201d added Mr Shireman at the MMT on Monday. \u201cWorking towards success and learn what we can. Appreciate you staying the extra day.<\/p>\n
\u201cFor REGEN, got a wet indication on a sensor and looking at the nuisance messages. INH wet indication since have other ways to know water on the fan. TOCA had some air bubble issues and we changed some software to clear this up.<\/p>\n
\u201cReadiness review for Sunday\u2019s Progress docking. Some open work but ready for docking (6:23 am CST, Sunday).\u201d<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2008\/11\/b22.jpg\")
The only other new issue that has been discussed relates to a Micrometeoroid Orbital Debris (MMOD) strike to Endeavour\u2019s window 6, reported as 0.5\u201d in diameter to the PLT right window to the thermal pane (estimate 1\/32\u201d depth).<\/p>\nBased on analysis the window should have no issues for peak heating M=8.0, but could form cracks but remain intact during peak loading M=0.7. Pilot visibility should not be hindered by this location if it cracks. The MMT concluded that the damage is ok, at present, to re-enter with as-is.<\/p>\n
Numerous images, presentations and notes have been acquired by L2, with a round up forthcoming in the next article to be published on site.<\/p>\n
L2 members<\/em><\/em>: All documentation \u2013 from which the above article has quoted snippets \u2013 is available in full in the related L2 sections, now over 4000 gbs in size.<\/em><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
The Mission Management Team (MMT) has decided to extend STS-126 by an additional docked day. This will allow for additional troubleshooting time on the Water Recycling System (WRS) that was carried to the Station by Endeavour. Meanwhile, EVA-4 has concluded the mission\u2019s spacewalk tasks. Flight Day 11 focused on the fourth and final spacewalk of […]<\/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":[233,8970,9197,9219],"class_list":["post-41253","post","type-post","status-publish","format-standard","hentry","category-news","tag-iss","tag-mmod","tag-mmt","tag-sts-126"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41253"}],"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=41253"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41253\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41253"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41253"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}