{"id":10550,"date":"2022-04-27T21:09:14","date_gmt":"2022-04-27T13:09:14","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/crew-4-mission-timeline\/"},"modified":"2022-04-27T21:09:14","modified_gmt":"2022-04-27T13:09:14","slug":"crew-4-mission-timeline","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/crew-4-mission-timeline\/","title":{"rendered":"Crew-4 mission timeline"},"content":{"rendered":"<p>The timeline below covers major vehicle and crew activities during the Crew-4 countdown and rendezvous with the International Space Station. All times assume liftoff of SpaceX\u2019s Falcon 9 rocket and Crew Dragon spacecraft from NASA\u2019s Kennedy Space Center at 3:52:55 a.m. EDT (0752:55 GMT) on Wednesday, April 27. All times in Eastern Daylight Time (GMT-4).<\/p>\n<p><strong>TUESDAY, APRIL 26<\/strong><\/p>\n<ul>\n<li><strong>10:22:55 p.m. EDT:<\/strong>&nbsp;Chief engineer launch readiness briefing<\/li>\n<li><strong>10:52:55 p.m. EDT:&nbsp;<\/strong>Launch shift arrives in Firing Room 4;&nbsp;Dragon IMU align\/configure for launch<\/li>\n<li><strong>11:22:55 p.m. EDT: <\/strong>Dragon prop pressurization<\/li>\n<li><strong>11:32:55 p.m. EDT: <\/strong>Crew weather brief<\/li>\n<li><strong>11:42:55 p.m. EDT: <\/strong>Crew handoff to SpaceX<\/li>\n<li><strong>11:52:55 p.m. EDT: <\/strong>Suit donning and checkouts<\/li>\n<li><strong>11:52:55 p.m. EDT:&nbsp;<\/strong>Launch director readiness poll for advance team to enter Blast Danger Area<\/li>\n<li><strong>11:57:55 p.m. EDT:&nbsp;<\/strong>Advance team travels to pad 39A<\/li>\n<\/ul>\n<p><strong>WEDNESDAY, APRIL 27<\/strong><\/p>\n<ul>\n<li><strong>12:00 a.m. EDT: <\/strong>NASA TV coverage begins<\/li>\n<li><strong>12:02:55 a.m. EDT: <\/strong>ISS state vector uploaded to Dragon<\/li>\n<li><strong>12:32:55 a.m. EDT: <\/strong>Crew walkout from Neil Armstrong O&amp;C Building<\/li>\n<li><strong>12:37:55 a.m. EDT: <\/strong>Crew departs for pad 39A in Tesla Model Xs<\/li>\n<li><strong>12:57:55 a.m. EDT: <\/strong>Crew arrives at pad 39A<\/li>\n<li><strong>1:17:55 a.m. EDT: <\/strong>Astronauts ingress into Crew Dragon<\/li>\n<li><strong>1:32:55 a.m. EDT: <\/strong>Crew communications checks<\/li>\n<li><strong>1:37:55 a.m. EDT: <\/strong>Verify ready for seat rotation<\/li>\n<li><strong>1:38:55 a.m. EDT: <\/strong>Suit leak checks<\/li>\n<li><strong>1:57:55 a.m. EDT: <\/strong>Hatch closed for flight<\/li>\n<li><strong>3:07:55 a.m. EDT: <\/strong>SpaceX launch director verifies go for propellant load<\/li>\n<li><strong>3:10:55 a.m. EDT: <\/strong>Crew access arm retracts<\/li>\n<li><strong>3:14:55 a.m. EDT: <\/strong>Launch escape system armed<\/li>\n<li><strong>3:17:55 a.m. EDT: <\/strong>1st and 2nd stage RP-1 fuel load begins; 1st stage LOX load begins<\/li>\n<li><strong>3:36:55 a.m. EDT: <\/strong>2nd stage LOX load begins<\/li>\n<li><strong>3:45:55 a.m. EDT: <\/strong>1st stage engine chill begins<\/li>\n<li><strong>3:47:55 a.m. EDT: <\/strong>Dragon transitions to internal power<\/li>\n<li><strong>3:48:25 a.m. EST: <\/strong>Strongback retraction begins<\/li>\n<li><strong>3:48:35 a.m. EDT: <\/strong>1st stage fully loaded with RP-1<\/li>\n<li><strong>3:49:15 a.m. EDT: <\/strong>Autonomous Flight Termination System final setup<\/li>\n<li><strong>3:49:50 a.m. EDT: <\/strong>M-Vac engine igniter purge<\/li>\n<li><strong>3:49:55 a.m. EDT: <\/strong>1st stage LOX tank full; Strongback at ~1.7 degrees<\/li>\n<li><strong>3:50:55 a.m. EDT: <\/strong>2nd stage LOX tank full<\/li>\n<li><strong>3:51:55 a.m. EDT: <\/strong>Flight computer starts final pre-flight checks; F9 prop tanks pressurize for flight<\/li>\n<li><strong>3:52:10 a.m. EDT: <\/strong>SpaceX launch director verifies go for launch<\/li>\n<li><strong>3:52:52 a.m. EDT: <\/strong>Engine controller commands engine ignition sequence<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>3:52:55 a.m. EDT: <\/strong>Liftoff<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>3:52:55 a.m. EDT:&nbsp;<\/strong>Stage 1a abort mode<\/li>\n<li><strong>3:53:05 a.m. EDT:&nbsp;<\/strong>Pitch kick<\/li>\n<li><strong>3:53:48 a.m. EDT: <\/strong>Stage 1 throttle bucket<\/li>\n<li><strong>3:53:57 a.m. EDT: <\/strong>Max-Q<\/li>\n<li><strong>3:54:04 a.m. EDT:&nbsp;<\/strong>Mach 1<\/li>\n<li><strong>3:54:09 a.m. EDT:&nbsp;<\/strong>Stage 1b abort mode<\/li>\n<li><strong>3:55:30 a.m. EDT:&nbsp;<\/strong>Stage 2a abort mode<\/li>\n<li><strong>3:55:31 a.m. EDT: <\/strong>MECO; 1st stage engines cut off<\/li>\n<li><strong>3:55:34 a.m. EDT: <\/strong>Stage separation<\/li>\n<li><strong>3:55:42 a.m. EDT: <\/strong>2nd stage\u2019s M-Vac engine ignites<\/li>\n<li><strong>3:57:15 a.m. EDT:<\/strong>&nbsp;Bermuda ground station acquires F9 and Dragon signals<\/li>\n<li><strong>4:00:23 a.m. EDT: <\/strong>1st stage entry burn<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>4:01:43 a.m. EDT: <\/strong>SECO-1; 2nd stage M-Vac engine shuts down; Orbit insertion<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>4:01:57 a.m. EDT: <\/strong>1st stage landing burn<\/li>\n<li><strong>4:02:25 a.m. EDT: <\/strong>1st stage landing on droneship<\/li>\n<li><strong>4:04:54 a.m. EDT: <\/strong>Dragon separates from 2nd stage; Begin Draco thruster checkouts<\/li>\n<li><strong>4:05:42 a.m. EDT: <\/strong>Dragon nosecone open sequence begins<\/li>\n<li><strong>4:41 a.m. EDT:&nbsp;<\/strong>Phase burn using Draco thrusters<\/li>\n<li><strong>5:30 a.m. EDT:&nbsp;<\/strong>Post-launch news conference on NASA TV<\/li>\n<li><strong>5:34 a.m. EDT:&nbsp;<\/strong>Crew downlink opportunity (approximate time)<\/li>\n<li><strong>7:00 a.m. EDT:&nbsp;<\/strong>Crew-4 sleep shift begins<\/li>\n<li><strong>1:35 p.m. EDT:&nbsp;<\/strong>Boost burn using Draco thrusters<\/li>\n<li><strong>3:00 p.m. EDT:&nbsp;<\/strong>Crew-2 wakeup<\/li>\n<li><strong>2:20 p.m. EDT:&nbsp;<\/strong>Close burn using Draco thrusters<\/li>\n<li><strong>3:56 p.m. EDT:&nbsp;<\/strong>Transfer burn using Draco thrusters<\/li>\n<li><strong>4:43 p.m. EDT:&nbsp;<\/strong>Coelliptic burn using Draco thrusters<\/li>\n<li><strong>4:45 p.m. EDT: <\/strong>Crew downlink opportunity (approximate time)<\/li>\n<li><strong>5:09 p.m. EDT:&nbsp;<\/strong>Crew Dragon range 30 kilometers from ISS<\/li>\n<li><strong>6:00 p.m. EDT:&nbsp;<\/strong>Crew Dragon range 15 kilometers from ISS<\/li>\n<li><strong>6:14 p.m. EDT:&nbsp;<\/strong>Go\/no go decision for approach initiation burn<\/li>\n<li><strong>6:17 p.m. EDT: <\/strong>Crew Dragon range 10 kilometers from ISS<\/li>\n<li><strong>6:39 p.m. EDT:&nbsp;<\/strong>Approach initiation burn; Crew Dragon range 7.5 kilometers from ISS<\/li>\n<li><strong>6:45 p.m. EDT:&nbsp;<\/strong>Crew Dragon range 6 kilometers from ISS<\/li>\n<li><strong>7:04 p.m. EDT:&nbsp;<\/strong>Approach initiation midcourse burn<\/li>\n<li><strong>7:11 p.m. EDT:&nbsp;<\/strong>Crew Dragon range 1 kilometer from ISS<\/li>\n<li><strong>7:14 p.m. EDT:<\/strong>&nbsp;Go\/no go decision to enter ISS keep out sphere (a 200-meter zone around the ISS)<\/li>\n<li><strong>7:24 p.m. EDT:&nbsp;<\/strong>Waypoint Zero arrival (400 meters below ISS)<\/li>\n<li><strong>7:48 p.m. EDT:&nbsp;<\/strong>Go\/no go decision to approach Waypoint 2<\/li>\n<li><strong>7:58 p.m.&nbsp;EDT: <\/strong>Docking axis\/Waypoint 1 arrival (220 meters in front of ISS)<\/li>\n<li><strong>8:04 p.m. EDT:&nbsp;<\/strong>Go\/no go decision for docking<\/li>\n<li><strong>8:09 p.m. EDT:&nbsp;<\/strong>Waypoint 2 arrival and hold (20 meters from ISS)<\/li>\n<li><strong>8:10 p.m. EDT:&nbsp;<\/strong>Resume approach from Waypoint 2 (20 meters from ISS)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>8:15 p.m. EDT:&nbsp;<\/strong>Contact and capture at IDA-3 on zenith port of the Harmony module<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><strong>8:28 p.m. EDT:&nbsp;<\/strong>Docking sequence complete; All hooks closed; Power umbilicals mated<\/li>\n<li><strong>8:40 p.m. EDT:&nbsp;<\/strong>Leak checks begin between Crew Dragon and ISS<\/li>\n<li><strong>9:05 p.m. EDT:<\/strong>&nbsp;Leak checks complete; Vestibule pressurization<\/li>\n<li><strong>9:45 p.m. EDT:&nbsp;<\/strong>Hatch opening; Crew-2 astronauts enter ISS<\/li>\n<\/ul>\n<p><strong>THURSDAY, APRIL 28<\/strong><\/p>\n<ul>\n<li><strong>7:45 a.m. EDT:&nbsp;<\/strong>Welcome ceremony<\/li>\n<\/ul>\n<p><b><i>Email the author.<\/i><\/b><\/p>\n<p><em><strong>Follow Stephen Clark on Twitter: @StephenClark1.<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The timeline below covers major vehicle and crew activities during the Crew-4 countdown and rendezvous with the International Space Station. All times assume liftoff of SpaceX\u2019s Falcon 9 rocket and Crew Dragon spacecraft from NASA\u2019s Kennedy Space Center at 3:52:55 a.m. EDT (0752:55 GMT) on Wednesday, April 27. All times in Eastern Daylight Time (GMT-4). [&hellip;]<\/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-10550","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/10550"}],"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=10550"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/10550\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=10550"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=10550"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=10550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}