- \n
- ISS Forum Section<\/li>\n
- L2 ISS Section<\/li>\n
- Click here to Join L2<\/li>\n<\/ul>\n
\u201cISS Prop usage summary: 96 kg for USTO maneuvers, and 80 kg for the RS MCS maneuvers and attitude hold.\u201d<\/p>\n
Expedition 32 \u2013 consisting of Russian commander Gennady Padalka, joined by fellow Russian Sergey Revin, and American Joe Acaba \u2013 will soon be boosted by three additional members \u2013 Russian Yuri Malenchenko, American Suni Williams, and Japanese astronaut Aki Hoshide \u2013 who are set to ride uphill on their Soyuz TMA-05M\/31S spacecraft in the middle of this month.<\/p>\n
The problem with the ISS FCR occurred on Sunday, when controllers noted the loss of the forward link (command and voice) through the Front-End Processor (FEP). Teams attempted to troubleshoot the issue on both the Prime and the Backup systems without immediate success.<\/p>\n
Space Shuttle models
<\/path>Space Technology <\/path>NASA educational resources <\/path>\n (adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2012\/07\/Z3A.jpg\" "\\"Z3A\\"")
Per contingency procedures, the team moved to Red FCR \u2013 otherwise known as the Training Flight Control Room \u2013 where controllers have access to a backup command link.<\/p>\nThe Station and crew were in no danger at any point during the issue \u2013 with is under investigation, but may be related to a \u201cleap second\u201d programming implementation into the system over the weekend.<\/p>\n
The only impact related to a planned attitude maneuver to take the Station from the -XVV \u2013 required for the Soyuz TMA-03M undocking \u2013 back to the nominal +XVV attitude. This was delayed to accommodate the troubleshooting and the move to the Red FCR.<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2012\/07\/Z52.jpg\" "\\"Z5\\"")
\u201cSunday\u2019s USTO maneuver was delayed 3 orbits (4.5 hours) due to an MCC issue that resulted in loss of forward link (ISS commanding) on Sunday,\u201d added the ISS notes (L2). \u201cThat issue has been resolved and the ISS forward link has been restored.\u201d<\/p>\nThe ISS controllers all moved back into the ISS FCR (FCR-1) in the early hours of Monday after the recovery effort on the FEP was deemed to be a success.<\/p>\n
It was also noted that during the issue, the ISS crew did try to call down to Houston. When they gained no response, ISS commander Padalka followed procedure and called his controllers at MCC Moscow to ask what the problem was. Ironically, the crew were supposed to be in a sleep period during the issue.<\/p>\n
Recent ISS Articles: http:\/\/www.nasaspaceflight.com\/tag\/iss\/<\/p>\n
![\"\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2012\/07\/Z7.jpg\" "\\"Z7\\"")
Follow on discussions also took place with Joe Acaba, related to what was always a back up option had the FEP issue continued for a longer period. This involved a netmeeting session with MCC-H to allow controllers to contact him and tell him to use the Station\u2019s IP phone if they needed to speak to him.<\/p>\nThe IP phone on the ISS is often used just like a normal telephone, allowing crew members to talk to their families in private.<\/p>\n
Due to the resolution of the problem, that protocol was not required, with normal voice and command procedures now back in place.<\/p>\n
(Images: NASA and L2\u2019s ISS Sections \u2013 Red FCR photo taken by NASASpaceflight.com\u2019s Philip Sloss)<\/p>\n
(NSF and L2 are providing full high level space flight coverage, available no where else on the internet, from Orion and SLS to ISS and COTS\/CRS\/CCDEV, to European and Russian vehicles). <\/p>\n
(Click here: http:\/\/www.nasaspaceflight.com\/l2\/ \u2013 to view how you can access the best space flight content on the entire internet)<\/p>\n","protected":false},"excerpt":{"rendered":"
The International Space Station (ISS) Flight Control Room (FCR) in Houston suffered a primary and backup failure of its Front-End Processor (FEP), causing a loss of the forward command and voice link between the orbital outpost and Houston. The issue \u2013 since resolved \u2013 caused controllers to move to the Red FCR, per contingency procedures. […]<\/p>\n","protected":false},"author":1,"featured_media":30237,"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":[233,8952],"class_list":["post-40076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-iss","tag-mcc"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/40076"}],"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=40076"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/40076\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media\/30237"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=40076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=40076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=40076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}