{"id":465953,"date":"2023-07-24T20:00:27","date_gmt":"2023-07-25T00:00:27","guid":{"rendered":"https:\/\/www.nasa.gov\/?p=465953"},"modified":"2023-07-26T14:37:13","modified_gmt":"2023-07-26T18:37:13","slug":"station-spacewalkers-replace-power-regulator-move-equipment","status":"publish","type":"post","link":"https:\/\/www.nasa.gov\/missions\/station\/station-spacewalkers-replace-power-regulator-move-equipment\/","title":{"rendered":"Station Spacewalkers Replace Power Regulator, Move Equipment"},"content":{"rendered":"<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg\"><img fetchpriority=\"high\" decoding=\"async\" width=\"853\" height=\"701\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg?w=853\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"Flight Engineers Barry Wilmore (foreground) and Reid Wiseman get set to perform their next set of tasks during Wednesday's spacewalk outside the International Space Station.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg 853w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg?resize=300,247 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg?resize=768,631 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg?resize=400,329 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg?resize=600,493 600w\" sizes=\"(max-width: 853px) 100vw, 853px\" loading=\"eager\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">Flight Engineers Barry Wilmore (foreground) and Reid Wiseman get set to perform their next set of tasks during Wednesday’s spacewalk outside the International Space Station.<\/div><div class=\"hds-credits\">NASA TV<\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<p>Two NASA astronauts wrapped up a 6-hour, 34-minute spacewalk at 2:50 p.m. EDT Wednesday to replace a failed power regulator. Flight Engineers Reid Wiseman and Barry Wilmore also relocated equipment on the station\u2019s exterior to begin setting the stage for a reconfiguration of the orbiting complex to accommodate future commercial crew vehicles.<\/p>\n\n\n\n<p>Wiseman, the lead spacewalker for Wednesday\u2019s excursion, and Wilmore switched their suits to battery power at 8:16 a.m. EDT, signaling the start of the spacewalk.<\/p>\n\n\n\n<p>For the highest priority task of the spacewalk, Wiseman and Wilmore exited from the Quest airlock and translated out to the starboard side of the station\u2019s integrated truss structure. There they replaced a failed power regulator known as a sequential shunt unit, which failed in May. The unit regulates power from the 3A solar array. The station has since operated normally on seven of its eight power channels, but replacing the unit provides the station team with more flexibility and redundancy in managing the primary power system and assures enough power for all the planned science.<\/p>\n\n\n\n<p>Timing was a factor for the replacement of the sequential shunt unit. The spacewalkers needed to remove the failed suitcase-sized unit and install its replacement while the station passed through the Earth\u2019s shadow and electricity was not being generated by the solar array.<\/p>\n\n\n<div id=\"\" class=\"hds-media hds-module wp-block-image\"><div class=\"margin-left-auto margin-right-auto nasa-block-align-inline\"><div class=\"hds-media-wrapper margin-left-auto margin-right-auto\"><figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-cover \"><a href=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514b.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"938\" height=\"700\" src=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514b.jpg?w=938\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"Flight Engineer Barry Wilmore's helmet camera captured this view of fellow spacewalker Flight Engineer Reid Wiseman as they get set to replace a failed power regulator on the International Space Station's starboard truss.\" style=\"transform: scale(1); transform-origin: 50% 50%; object-position: 50% 50%; object-fit: cover;\" block_context=\"nasa-block\" srcset=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514b.jpg 938w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514b.jpg?resize=300,224 300w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514b.jpg?resize=768,573 768w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514b.jpg?resize=400,299 400w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514b.jpg?resize=600,448 600w, https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514b.jpg?resize=900,672 900w\" sizes=\"(max-width: 938px) 100vw, 938px\" \/><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\"><div class=\"hds-caption-text p-sm margin-0\">Flight Engineer Barry Wilmore’s helmet camera captured this view of fellow spacewalker Flight Engineer Reid Wiseman as they get set to replace a failed power regulator on the International Space Station’s starboard truss.<\/div><div class=\"hds-credits\">NASA TV<\/div><\/figcaption><\/div><\/div><\/div>\n\n\n<p>The remainder of the spacewalk focused on moving equipment installed on the port side of the station\u2019s truss in preparation for the relocation of the Leonardo Permanent Multipurpose Module, or PMM, currently expected to take place next summer. The relocation of the PMM and the installation of international docking adapters scheduled to be delivered to the complex in 2015 will configure the station for future commercial crew vehicles and provide an additional berthing port for commercial cargo spacecraft.<\/p>\n\n\n\n<p>Wiseman and Wilmore removed an external TV camera from the bottom of the P1 truss segment. Since that camera had lost its zoom capability, the spacewalkers replaced it on the top of P1 with a new camera.<\/p>\n\n\n\n<p>The astronauts then detached an articulating portable foot restraint and tool stanchion from P1 and moved it inward to the centerpiece of the station\u2019s truss structure, the S0 truss, to get it out of the way for the relocation of Leonardo.<\/p>\n\n\n\n<p>Finally, the Wireless Video System External Transceiver Assembly, or WETA, which receives all the video signals from spacewalking crew members, was transferred from the P1 truss to the top of the Harmony node.<\/p>\n\n\n\n<p>Wednesday\u2019s spacewalk was the 183rd  in support of station assembly and maintenance.  This was the first spacewalk for Wilmore. Wiseman, who joined Flight Engineer Alexander Gerst of the European Space Agency for a 6-hour, 13-minute spacewalk on Oct. 7, completed his second spacewalk.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Two NASA astronauts wrapped up a 6-hour, 34-minute spacewalk at 2:50 p.m. EDT Wednesday to replace a failed power regulator. Flight Engineers Reid Wiseman and Barry Wilmore also relocated equipment on the station\u2019s exterior to begin setting the stage for a reconfiguration of the orbiting complex to accommodate future commercial crew vehicles. Wiseman, the lead [...]<\/p>\n","protected":false},"author":133,"featured_media":466077,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nasa_hds_core_meta_l10n":"en-US","nasa_hds_core_meta_article_editor":"","nasa_hds_core_meta_article_contacts":[],"nasa_hds_core_meta_article_topic":"","nasa_hds_core_meta_linked_locations":[],"nasa_hds_core_meta_article_related_articles":[],"hds_migrate_meta_pr_release_id":"","hds_migrate_meta_pr_release_type":"","nasa_hds_core_meta_location_x":"","nasa_hds_core_meta_location_y":"","nasa_hds_core_meta_gallery_images":[],"footnotes":""},"categories":[3148,2735],"news-tags":[],"internal-terms":[],"coauthors":[10248],"parsely":{"version":"1.1.0","meta":{"@context":"https:\/\/schema.org","@type":"NewsArticle","headline":"Station Spacewalkers Replace Power Regulator, Move Equipment","url":"https:\/\/www.nasa.gov\/missions\/station\/station-spacewalkers-replace-power-regulator-move-equipment\/","mainEntityOfPage":{"@type":"WebPage","@id":"https:\/\/www.nasa.gov\/missions\/station\/station-spacewalkers-replace-power-regulator-move-equipment\/"},"thumbnailUrl":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg?w=150&h=150&crop=1","image":{"@type":"ImageObject","url":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg"},"articleSection":"Missions","author":[{"@type":"Person","name":"Mark A. Garcia"}],"creator":["Mark A. Garcia"],"publisher":{"@type":"Organization","name":"NASA","logo":"https:\/\/www.nasa.gov\/wp-content\/themes\/nasa\/assets\/images\/nasa-logo.svg"},"keywords":["Missions","International Space Station (ISS)","Expedition 41"],"dateCreated":"2023-07-25T00:00:27Z","datePublished":"2023-07-25T00:00:27Z","dateModified":"2023-07-26T18:37:13Z"},"rendered":"<meta name=\"parsely-title\" content=\"Station Spacewalkers Replace Power Regulator, Move Equipment\" \/>\n<meta name=\"parsely-link\" content=\"https:\/\/www.nasa.gov\/missions\/station\/station-spacewalkers-replace-power-regulator-move-equipment\/\" \/>\n<meta name=\"parsely-type\" content=\"post\" \/>\n<meta name=\"parsely-image-url\" content=\"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg?w=150&h=150&crop=1\" \/>\n<meta name=\"parsely-pub-date\" content=\"2023-07-25T00:00:27Z\" \/>\n<meta name=\"parsely-section\" content=\"Missions\" \/>\n<meta name=\"parsely-tags\" content=\"Missions,International Space Station (ISS),Expedition 41\" \/>\n<meta name=\"parsely-author\" content=\"Mark A. Garcia\" \/>","tracker_url":"https:\/\/cdn.parsely.com\/keys\/nasa.gov\/p.js"},"read_time":3,"time_ago":"11 months","featured_image":{"id":466077,"file":"https:\/\/www.nasa.gov\/wp-content\/uploads\/2023\/07\/pic-101514a.jpg","title":"Flight Engineers Barry Wilmore (foreground) and Reid Wiseman","alt":"Flight Engineers Barry Wilmore (foreground) and Reid Wiseman get set to perform their next set of tasks during Wednesday's spacewalk outside the International Space Station.","caption":"Flight Engineers Barry Wilmore (foreground) and Reid Wiseman get set to perform their next set of tasks during Wednesday's spacewalk outside the International Space Station."},"_links":{"self":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/465953"}],"collection":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/users\/133"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/comments?post=465953"}],"version-history":[{"count":6,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/465953\/revisions"}],"predecessor-version":[{"id":466086,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/posts\/465953\/revisions\/466086"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media\/466077"}],"wp:attachment":[{"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/media?parent=465953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/categories?post=465953"},{"taxonomy":"news-tags","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/news-tags?post=465953"},{"taxonomy":"internal-terms","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/internal-terms?post=465953"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.nasa.gov\/wp-json\/wp\/v2\/coauthors?post=465953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}