{"id":4348,"date":"2019-07-23T16:23:01","date_gmt":"2019-07-23T21:23:01","guid":{"rendered":"https:\/\/doctoraviation.com\/?p=4348"},"modified":"2019-07-23T16:25:12","modified_gmt":"2019-07-23T21:25:12","slug":"apollo-11-day-4","status":"publish","type":"post","link":"https:\/\/doctoraviation.com\/apollo-11-day-4\/","title":{"rendered":"Apollo 11: Day 4"},"content":{"rendered":"\n

Apollo 11: This past week marked the 50th<\/sup> anniversary.\u00a0 Doctor Aviation will post a daily blog recounting each day of the voyage.\u00a0 July 19 marks Day 4, the fourth day after the launch.\u00a0 <\/p>\n\n\n\n

The Morning<\/h3>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n

Mission Control awakes the crew at roughly 8:30am.  Two hours later, Michael Collins reports that\nthe astronauts are able to see a sky full of stars.  To this point in the journey, the crew saw\nonly an occasional star and no constellations. \nTen minutes later Armstrong reports spectacular views of the moon filling\n\u00be of the hatch window.  Part of the moon\nis dark (hidden by the earth) and part is lit. \nHe declares, \u201cIt\u2019s a view worth the price of the trip\u201d <\/p>\n\n\n\n

The Afternoon<\/h3>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n

The crew prepares to enter lunar orbit.  The capsule will orbit the moon multiple\ntimes before attempting a landing. \nEntering the orbit is termed Lunar Orbit Insertion or LOI.  At 12:58pm, Houston reports that Apollo 11 is\na go for LOI.  <\/p>\n\n\n\n

At 1:13pm, the crew passes behind the moon and radio\ncontact is lost with Mission Control. \nWhile on the backside of the moon, the crew fires the main engine for\nsix minutes.  This slows the craft so\nthat it can be captured by the moon\u2019s gravitational field.  This puts the craft into orbit between the\naltitudes of 61 and 169 nautical miles.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

At 1:55pm, the crew gets its first view of the proposed\nlanding area.  Armstrong reports that the\npictures of the area taken by Apollo 8 and Apollo 10 are very helpful in\nidentifying the area.  The difference\nbetween the photos and the live view is like the difference between watching a\ngame on TV and watching it live.  The\ncrew begins to make out the colors of gray and tan on the lunar surface.<\/p>\n\n\n\n

At nearly 4:00pm, the crew begins to telecast pictures\nof the lunar surface.  Near dinnertime,\non the backside of the moon, the crew burns the main engine of 17 seconds.  This stabilizes the orbit between 54 and 66\nmiles.  It also results in a complete\nlunar orbit every two hours.  The crew\nthen beds down.  The longest day lies\nahead. <\/p>\n","protected":false},"excerpt":{"rendered":"

Apollo 11: This past week marked the 50th anniversary.\u00a0 Doctor Aviation will post a daily blog recounting each day of the voyage.\u00a0 July 19 marks Day 4, the fourth day after the launch.\u00a0 The Morning Mission Control awakes the crew at roughly 8:30am.  Two hours later, Michael Collins reports that the astronauts are able to […]<\/p>\n","protected":false},"author":338,"featured_media":4286,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false,"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[39],"tags":[185,1035,189],"jetpack_publicize_connections":[],"acf":[],"yoast_head":"\nApollo 11: Day 4 - Doctor Aviation<\/title>\n<meta name=\"description\" content=\"Apollo 11: This past week marks the 50th anniversary. 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