**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 <\/font>**STS-123 Special: MOD Flight Readiness Review (FRR) Presentations, Baselines and Mission Overviews. <\/font><\/em><\/font><\/p>\n <\/font><\/em>Over 35 Checklists and Handbooks, plus STS-123 Flight Plan and Detailed Mission Timeline Overviews. LIVE MMT Level Flight Day coverage (Memos, Info, Images, Videos and Presentations). EVA-5 Preview:<\/b><\/u><\/p>\n OBSS<\/b><\/u><\/p>\n With the docked late inspection of Endeavour\u2019s TPS complete, astronauts Bob Behnken and Mike Foreman are gearing up for a record setting fifth Shuttle\/ISS mission EVA that will see the scheduled completion of three events.<\/p>\n In addition to providing physical attachment points for the OBSS, the OSE also provides attach points for the keep-alive attach device (KAD) which will provide electrical energy and heating for the OBSS sensor packages.<\/p>\n During the spacewalk, Behnken and Foreman will install Stanchion\/avionics boxes, the KAD, and the P411 connector before manually connecting the OBSS to the OSE. <\/p>\n After stowage of the boom is complete, Mike Foreman will install a thermal cover over the critical sensor packages of the OBSS. This cover will provide not only additional thermal barriers for the sensor packages, but also MMOD (Micro-Meteoroid Orbital Debris) protection.<\/p>\n \n MISSE-6<\/b><\/u><\/p>\n Following a big picture re-think by ground engineers, a new installation plan has been drawn up. <\/font><\/p>\n \u2018MISSE 6A (bent) install will be attempted first followed by 6B (straight). MISSE 6A was NOT attempted on EVA-3. As long as one 1\/4\u201d pip pin is installed, MISSE is considered secured. If only one is installed, must be wire tied,\u2019 noted yesterday\u2019s Mission Status Summary.<\/font><\/p>\n \u2018The following actions will be taken in the order listed to achieve MISSE installation. Install 1\/4\u201d pip pins (2) using nominal method. Crew member has a go to use as much force as they deem appropriate. Install 1\/4\u201d pip pins (2) using hammer and apply light tapping force. <\/font><\/p>\n \u2018Excessive impact force (hammering) not permitted. If one or both 1\/4\u201d pip pins are seated so that the edge of pin is past flush on opposite side of the probe socket but the ball detents are not engaged, wire tie the pip pin to secure it.\u2019<\/font><\/p>\n Nevertheless, NASA is prepared for a possible issue with the 1\/4\u201d pip pins. <\/font><\/p>\n \u2018If can\u2019t secure at least one 1\/4\u201d pip pin. Cut both 1\/4\u201d pip pin tethers to remove both pip pins. Install two 3\/16\u201d pip pins and wire tie them to the probe. <\/b>If 3\/16\u201d pip pins are used, two pins are required and they must be wire tied as the ball detents will not retain the pins in a 1\/4\u201d hole,\u2019 noted the Mission Status Summary. <\/font><\/p>\n Furthermore, if Behnken cannot secure any pip pins, he will tether MISSE-6 to the installation location. For this scenario, MISSE-6 would not be in a data collection mode. Additionally, if an EVA contingency occurs, MISSE-6 \u2018will be placed in a structurally safe configuration with tethers.\u2019<\/font><\/p>\n \n SARJ<\/b><\/u><\/font><\/p>\n <\/b><\/u><\/font>While Bob Behnken works with MISSE-6, Mike Foreman will translate out to the Starboard SARJ (Solar Alpha Rotary Joint) to continue inspection operations which began last year.<\/font><\/p>\n <\/p>\n \u201cThe SARJ assessment team presented some early materials analysis based upon the tape samples returned. 99.9 percent of the material comes from the Nitrided hard surface on top of the outer surface race ring of the SARJ,\u201d noted the Mission Status Summary. \u201cInitial indications point to a classic spalling failure of the surface initiated by unexpectedly high friction loads. The team is working hard to characterize what the friction loads could have been and what might be causing them.\u201d<\/p>\n <\/font><\/p>\n <\/font><\/font><\/font>To assist with this investigation, Foreman will conduct visual inspections of the SARJ under covers six, eight, nine, eleven, sixteen, and eighteen.<\/font><\/p>\n <\/font>In addition to these inspections, the ISS Program has requested further testing of the SARJ\u2019s Autotrack feature. \u201cProgram believes that moving the SARJ at the slightly higher rates provided by Directed Position mode may be leading to an increased level of overall system vibration compared to the slightly lower rates of the Autotrack mode. They have requested a one orbit test after 1JA\/STS-123 to measure the difference.\u201d <\/p>\n <\/font><\/b><\/u><\/font>Endeavour continues to perform very well as the mission proceeds along the updated timeline. No decisions are required from the MMT at this time, a continuing sign of the smooth flow Endeavour and the mission are enjoying. <\/font><\/p>\n <\/font><\/font>The SSPTS (Station to Shuttle Power Transfer System) continues to operate as designed providing three additional docked days and one additional undocked day should the need to extend the mission arise.<\/font><\/p>\n <\/font><\/font>\u201cBoth margin numbers assume SSPTS power transfer for nominal mission duration. No longer protecting O2 transfer margin for ISS; second airlock fan now off. No concerns for middeck transfer at this time,\u201d noted the FD-11 Mission Status Summary.<\/font><\/p>\n <\/font><\/font><\/font>One item of interest relating to O2 Repress was noted in the Mission Status Summary. \u201cReceived warning for Major Constituent Analyzer (MCA) ppO2 out of limits during ISS stack repress from Orbiter. Raw value exceeded 24.1 percent limit, but adjusted value did not. Localized issue in airlock due to poor airflow mixing when both Oxygen Introduction Valves (Lab and Airlock) were in use. Successfully restarted the repress using only the Lab OIV.\u201d<\/font><\/p>\n <\/font>Overall, STS-123 is proceeding very well as Endeavour and her crew head into the final days of docked operations ahead of a one revolution earlier landing on Wednesday, March 26.<\/font><\/p>\n","protected":false},"excerpt":{"rendered":" With the docked Late Inspections of Endeavour\u2019s TPS behind them, the STS-123 crew then turned their attentions to the all important EVA-5 which saw \u2013 among other things \u2013 the stowing of the OBSS (Orbiter Boom Sensor System) to the ISS for use by Discovery (STS-124) later this year. EVA-5 also saw the installation 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":[],"class_list":["post-41452","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41452"}],"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=41452"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41452\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41452"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41452"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<\/em><\/font>**Click here for sample of L2 menu and content**<\/font><\/em><\/p>\n
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\n<\/b><\/u><\/p>\nThe primary focus of EVA-5 is the attachment of the OBSS to the S1 truss of the ISS. The OBSS will be attached to the orbiting structuring by way of Orbital Support Equipment (OSE) that was installed on the Station back in August 2007 during STS-118. <\/p>\n
Following activities with the OBSS, Behnken and Foreman will split up to accomplish two additional tasks before the completion of the EVA. For Behnken, the remainder of the EVA will be dedicated to the installation of the MISSE-6 following a previously unsuccessful attempt to install the payload on EVA-3.<\/p>\n
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