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**Over 2100mb of STS-116 onwards related presentions and mission documentation <\/em>available on L2<\/em> ** Around 15 documents and images helped collate this article \u2013 all downloadable on L2.<\/em><\/p>\n **LIVE news updates on Discovery STS-116 \u2013 FOR EACH FLIGHT DAY**<\/em><\/p>\n The Primary B Controller on the FES Flash Evaporator System failed to come out of standby mode \u2013 but is operational on its Primary A Controller. The system is used to provide additional cooling to the orbiter radiators.<\/p>\n \u2018Loss of FES Primary-B controller leaves one level of redundancy beyond Primary-A,\u2019 noted a NASA memo acquired by this site. \u2018If Primary-A fails and Primary-B can not be recovered, an MDF (Minimum Duration Mission) will be declared per Flight Rule.\u2019<\/p>\n Current recommendations point to continued evaluations of the fault, and proceeding with the mission as normal. \u2018The FES in Pri B Controller in topping mode failed to come out of stand-by during the crew sleep period,\u2019 NASA information stated. \u2018During topping mode, the FES supplements cooling primarily provided by the radiators. There were no immediate impacts to the crew or the mission. Prior to this event, the FES had been working with no anomalous signatures.<\/font><\/p>\n \u2018There are no immediate impacts to mission success or safety. The FES system can be operated in the using redundancy provided pri A controller and feedline A system if required. Presently the radiator cooling is sufficient to maintain the required heat load while the crew is sleeping. The FES controllers are 1R3. <\/p>\n \u2018There are no other anomalies that affect this problem.<\/font><\/p>\n \u2018On FD 02 MOD performed an on-orbit troubleshooting procedure towards the end of the supply water dump operating on FES Pri A. The attempt to continue the supply water dump using the FES Pri B failed.\u2019<\/p>\n <\/font> The fault was spotted during SRMS checkout, when the end effector failed to extend the snare ring carriage (derigidization), indicating a potential problem with the RHC capture\/release switch, 10V contact. Despite attempts by the crew of Discovery to repeat the command, the device failed to respond. <\/p>\n However, other steps performed manually by the crew confirmed the RHC\u2019s capture\/release switch is functioning properly.<\/font><\/p>\n \u2018Recommendation is to continue to use Manual Release, and Backup Release in the event of subsequent RHC capture\/release switch failure,\u2019 added memos.<\/p>\n \u2018There will be a nuisance Uncommanded Release annunciation when the crew ungrapples the OBSS during berthing as the MCIU will no longer receive the 10V release signal. MOD is putting together notes and work around info for the crew.<\/font><\/p>\n \u2018Further investigations will occur once the hardware is available after the mission.\u2019<\/font><\/p>\n Spaceflight news subscription (adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n Redundancy again comes into play with this fault, but NASA has worked up a plan to consider a space walk, should the situation deteriorate.<\/p>\n \u2018The current risk and worst-case risk are that one of three levels of redundancy has been lost for End Effector Capture\/Release due to the malfunction of the Capture Switch on the Rotational Hand Controller, or a circuitry problem,\u2019 NASA memos state. <\/p>\n \u2018The next failure could lead to an EVA to deal with certain contingency scenarios outlined in the flight rules.\u2019<\/p>\n Also observed on Flight Day 2 was a loose blanket on the RMS\u2019 Wrist Pitch joint. Further images are being evaluated.<\/p>\n \u2018During RMS operations on FD2, it was noticed that the blanket around the Wrist Pitch (WP) joint was loose,\u2019 NASA memos note. \u2018The crew took pictures of the blanket.\u2019<\/p>\n Not deemed a problem on orbit is a failure on the O2 Flowmeter, which failed on Fuel Cell 3, caused by a blown fuse. A post flight troubleshoot is being drawn up by NASA, but the fault is not classed as detrimental to the Fuel Cell\u2019s operation on this mission. \u2018FC 3 O2 Flowmeter went to an OSL reading. The OSL indication correlated to a 1.6 Amp increase, for a 2 second duration, on Mid Power Control Assembly #3(MPCA #3). FC 3 O2 Flowmeter circuit is protected by a 1 Amp. Based on the signatures and the specified fuse maximum blow current of a 1.5 Amp load, the fuse blew. <\/p>\n \u2018The increased O2 Flowmeter amperage load was most likely caused by overstressed EEE components located in the flowmeter circuitry. The O2 Flowmeter indication is crit 3\/3. It is used primarily to indicate increased O2 flowrates during FC purges. <\/p>\n \u2018Other parameters can also aid in verifying purges such as the H2 flowmeter, Purge Line temperatures, cryo pressure decay and fuel cell performance. The loss of the FC 3 O2 Flowmeter is no impact to fuel cell 3 operation.\u2019<\/p>\n The image came with an associated note from NASA managers, calling it \u2018Suspected bird poop.\u2019 This will burn off during re-entry.<\/font><\/p>\n For RPM and Docking, please refer to our live update pages.<\/font><\/p>\n **LIVE news updates on Discovery STS-116 \u2013 FOR EACH FLIGHT DAY**<\/font><\/em><\/p>\n Super high quality (450meg) Launch Videos of STS-116 is now available on L2. Several HQ Engineering Videos also available.<\/font><\/em> **INFINITY: 10 minute STS-115 MUSIC VIDEO**<\/font><\/em> \u2013 **NASASpaceflight.com Job Opportunities**<\/em><\/font> <\/p>\n <\/font> Shuttle Discovery has arrived at the International Space Station (ISS), following the visually stunning RPM (Rbar Pitch Maneuver) underneath the orbital outpost. The orbiter is arriving with growing concerns over the Flash Evaporation System (FES) and Shuttle Remote Manipulator System (RMS) faults, both of which received an elevated problem status. **Over 2100mb of STS-116 onwards related […]<\/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-41857","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41857"}],"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=41857"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41857\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41857"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41857"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41857"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Initially, the fault was played down by Deputy Shuttle manager John Shannon at the end of Flight Day 2. However, this has now been elevated to the status of a MER (Mission Evaluation Room) problem.<\/p>\n
<\/font><\/p>\nThe other main issue noted, the loss of RMS End Effector Auto Release Capability, is also one failure away from requiring \u2013 in the worst case scenario \u2013 an EVA to \u2018deal with certain contingency scenarios.\u2019<\/p>\n
<\/font><\/p>\nOn a lighter note, the imfamous \u2018bird poop\u2019 may be making a reappearance on this flight. Early images acquired from the OBSS (Orbiter Boom Sensor System) inspections on Flight Day 2 show what appears to be the remains of one of a Florida bird\u2019s lunch.<\/p>\n
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