The boil off of the remaining liquid hydrogen and liquid oxygen in space shuttle Discovery’s external tank was completed at about 1:40 p.m. EDT today. Crews have begun inerting the tank with helium gas to flush out any remaining hydrogen gas. They expect the process to be completed at about 5:30 p.m. <\/p>\n
Following inerting, engineers will begin evaluating and testing the liquid hydrogen fill and drain valve in the shuttle’s main propulsion system by opening and closing it.<\/p>\n
This morning’s launch attempt was postponed after an indication that valve failed to perform as expected during fueling of the shuttle’s external tank Tuesday afternoon. <\/p>\n
NASA is targeting Discovery’s next launch attempt for no earlier than Friday, Aug. 28 at 12:22 a.m., depending on the results of the testing. The weather forecast calls for a 70 percent chance of acceptable conditions at launch time.<\/p>\n","protected":false},"excerpt":{"rendered":"
The boil off of the remaining liquid hydrogen and liquid oxygen in space shuttle Discovery’s external tank was completed at about 1:40 p.m. EDT today. Crews have begun inerting the tank with helium gas to flush out any remaining hydrogen gas. They expect the process to be completed at about 5:30 p.m. <\/p>\n
Following inerting, engineers will begin evaluating and testing the liquid hydrogen fill and drain valve in the shuttle’s main propulsion system by opening and closing it.<\/p>\n
This morning’s launch attempt was postponed after an indication that valve failed to perform as expected during fueling of the shuttle’s external tank Tuesday afternoon. <\/p>\n
NASA is targeting Discovery’s next launch attempt for no earlier than Friday, Aug. 28 at 12:22 a.m., depending on the results of the testing. The weather forecast calls for a 70 percent chance of acceptable conditions at launch time.<\/p>\n","protected":false},"author":6,"featured_media":612598,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-2773","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-shuttle-update"],"_links":{"self":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/2773","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2773"}],"version-history":[{"count":0,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/posts\/2773\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=\/wp\/v2\/media\/612598"}],"wp:attachment":[{"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/spaceweekly.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}