\n
![\"01\"](\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2015\/11\/01-1024x683.jpg\")
\nThe United Launch Alliance Atlas 5 vehicle, designated AV-061, will lift off and begin a vertical rise away from Complex 41 at Cape Canaveral Air Force Station, Florida.<\/p>\n
T+01:22.6: Mach 1 and Max Q<\/strong> T+04:16: Main Engine Cutoff<\/strong> T+04:22: Stage Separation<\/strong> T+04:32: Centaur Ignition<\/strong> T+04:40: Nose Cone Jettison<\/strong> T+18:17: Centaur Engine Cutoff<\/strong> T+21:07: Spacecraft Separation<\/strong> See earlier Cygnus OA-4 coverage.<\/p>\n Our Atlas archive.<\/p>\n","protected":false},"excerpt":{"rendered":" Follow the Atlas 5 rocket\u2019s ascent into orbit from Cape Canaveral\u2019s Complex 41 launch pad with the Orbital ATK Cygnus resupply ship for the International Space Station. Launch is scheduled for Thursday at 5:55 p.m. EST (2255 GMT). T+00:01.1: Liftoff The United Launch Alliance Atlas 5 vehicle, designated AV-061, will lift off and begin a […]<\/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":[3222,724,3800,286,2304,639,717,3801],"class_list":["post-15902","post","type-post","status-publish","format-standard","hentry","category-news","tag-ascent","tag-atlas-5","tag-av-061","tag-cargo","tag-crs","tag-cygnus","tag-international-space-station","tag-oa-4"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/15902"}],"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=15902"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/15902\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=15902"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=15902"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=15902"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n![\"02\"](\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2015\/11\/02-1024x681.jpg\")
\nThe Atlas rocket achieves Mach 1 some 83 seconds into the flight, then passes through the region of maximum dynamic pressure at 94 seconds.<\/p>\n
\n![\"03\"](\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2015\/11\/03-1024x568.jpg\")
\nThe RD-180 main engine completes its firing after consuming the load of RP-1 kerosene fuel and liquid oxygen supply in the Atlas first stage.<\/p>\n
\n![\"04\"](\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2015\/11\/04-1024x577.jpg\")
\nThe Common Core Booster first stage of the Atlas 5 rocket separates from the Centaur upper stage. Over the next few seconds, the Centaur engine liquid hydrogen and liquid oxygen systems are readied for ignition.<\/p>\n
\n![\"05\"](\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2015\/11\/05-1024x574.jpg\")
\nThe Centaur RL10 engine ignites for the only upper stage firing of the mission. This burn will inject the Centaur stage and Cygnus spacecraft into low-Earth orbit.<\/p>\n
\n![\"06\"](\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2015\/11\/06-1024x574.jpg\")
\nThe two-piece, 14-foot-diameter payload fairing that protected the Cygnus during the atmospheric ascent is separated to reveal the satellite to space.<\/p>\n
\n![\"07\"](\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2015\/11\/07-1024x576.jpg\")
\nAt the conclusion of this firing, the Centaur will have delivered the Cygnus spacecraft into the targeted circular orbit of 124 nautical miles, inclined 51.6 degrees to the equator.<\/p>\n
\n![\"08\"](\"http:\/\/spaceflightnow.com\/wp-content\/uploads\/2015\/11\/08-1024x570.jpg\")
\nThe Orbital ATK Cygnus cargo delivery spacecraft for the International Space Station is released into orbit from the Centaur upper stage to complete the AV-061 launch.<\/p>\n