{"id":16224,"date":"2018-06-15T02:06:36","date_gmt":"2018-06-15T06:06:36","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=16224"},"modified":"2018-06-15T11:46:26","modified_gmt":"2018-06-15T15:46:26","slug":"run-a-realistic-apollo-8-guidance-computer-emulation-2","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=16224","title":{"rendered":"Run a realistic Apollo 8 guidance computer emulation"},"content":{"rendered":"<p>December 21st of this year will mark the 50th anniversary of the launch of the\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Apollo_8\" target=\"_d\">Apollo 8 mission<\/a>\u00a0to the Moon. Astronauts\u00a0<a title=\"Frank Borman\" href=\"https:\/\/en.wikipedia.org\/wiki\/Frank_Borman\">Frank Borman<\/a>,\u00a0<a title=\"Jim Lovell\" href=\"https:\/\/en.wikipedia.org\/wiki\/Jim_Lovell\">James Lovell<\/a>, and <a title=\"William Anders\" href=\"https:\/\/en.wikipedia.org\/wiki\/William_Anders\">William Anders<\/a>\u00a0became the first humans to leave Earth and orbit another celestial body. The mission was extremely risky. The\u00a0<a title=\"Saturn V\" href=\"https:\/\/en.wikipedia.org\/wiki\/Saturn_V\">Saturn\u00a0V<\/a>\u00a0rocket had only launched twice before and never with a crew and on the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Apollo_6\">previous launch<\/a> there were <a href=\"https:\/\/en.wikipedia.org\/wiki\/Apollo_6#Launch\">engine shutdowns<\/a> on the second stage (longer firing of the remaining engines saved the mission). Although there was no lunar lander on <a href=\"https:\/\/www.nasa.gov\/mission_pages\/apollo\/missions\/apollo8.html\" target=\"_blank\" rel=\"noopener\">Apollo 8<\/a>\u00a0, many key technologies and operations\u00a0needed for a successful lunar landing mission were demonstrated for the first time such as translunar injection, command module navigation, communications, and midcourse corrections.<\/p>\n<p>And all these tasks were performed with computer technology that was far less powerful than what runs a $10 wristwatch today. To get an appreciation for the state of the art in advanced compact computers in 1968, check out the free\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=apollo.agc\">Apollo 8 Launch Emulator for Android<\/a>\u00a0created by\u00a0astronomer\u00a0<a href=\"http:\/\/singularsci.com\/\">Rick Boozer<\/a>.<\/p>\n<figure id=\"attachment_16218\" aria-describedby=\"caption-attachment-16218\" style=\"width: 412px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=apollo.agc\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"16218\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=16218\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBooze-1r.jpg\" data-orig-size=\"412,640\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Apollo 8 Computer Emulator\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Emulation of Apollo 8 spacecraft\u2019s guidance computer.&lt;\/p&gt;\n\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBooze-1r.jpg\" class=\"wp-image-16218 size-full\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBooze-1r.jpg\" alt=\"\" width=\"412\" height=\"640\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBooze-1r.jpg 412w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBooze-1r-193x300.jpg 193w\" sizes=\"auto, (max-width: 412px) 100vw, 412px\" \/><\/a><figcaption id=\"caption-attachment-16218\" class=\"wp-caption-text\"><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=apollo.agc\" target=\"_blank\" rel=\"noopener\"><em>Emulation of Apollo 8 spacecraft\u2019s guidance computer.<\/em><\/a><\/figcaption><\/figure>\n<p>The program allows you to<\/p>\n<p style=\"padding-left: 30px;\"><em>operate a realistic replica of the Apollo 8 spacecraft\u2019s guidance computer&#8221;.\u00a0\u00a0<\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>This app is not a traditional game (no winning or losing involved). It is also not an entire mission simulation. So, if you are looking for either of those, then don\u2019t download this app.\u00a0<\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>Instead, it is a commemoration of the launch of humankind\u2019s first trip to another world by way of an emulation of a realistic Apollo Guidance Computer (or AGC) and DiSplay KeYboard interface (called DSKY).<\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>You can re-enact the launch of the powerful Saturn V rocket that sent the Apollo 8 spacecraft with its crew on the way to the Moon on December 21, 1968. The animation you will see will not be of a flying rocket, but the mission critical true-to-life data displayed as it would have been shown in real-time to the astronauts as they ascended from the launch pad to Earth parking orbit.\u00a0<\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>To add to the enjoyment of the experience, the app supplies optional English explanations of the data shown. Not only that, you will be continually informed of major events that occur at each mission critical point between launch and Earth orbit at the appropriate time.<\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>As a bonus, you will be able to type in a small subset of the actual commands that the astronauts entered into the AGC via the DSKY and see relevant results.\u00a0<\/em><\/p>\n<p>The program is available for free at the\u00a0<a href=\"https:\/\/play.google.com\/store?hl=en\" target=\"_blank\" rel=\"noopener\">Google Play Store<\/a>.<\/p>\n<p>If, as in my case,\u00a0\u00a0you don&#8217;t have an Android device, you can run the app on a PC or Mac computer by downloading the free NOX virtual Android device creator at\u00a0<a href=\"https:\/\/www.bignox.com\/\">www.bignox.com<\/a>.<\/p>\n<p><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=apollo.agc\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"16219\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=16219\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBoozer-2.jpg\" data-orig-size=\"371,638\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Apollo 8 Launch Emulator\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBoozer-2.jpg\" class=\"aligncenter size-full wp-image-16219\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBoozer-2.jpg\" alt=\"\" width=\"371\" height=\"638\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBoozer-2.jpg 371w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/ScreenCap-Apollo8Computer-RickBoozer-2-174x300.jpg 174w\" sizes=\"auto, (max-width: 371px) 100vw, 371px\" \/><\/a><\/p>\n<p style=\"text-align: center;\">====<\/p>\n<p style=\"text-align: center;\"><iframe style=\"width: 120px; height: 240px;\" src=\"\/\/ws-na.amazon-adsystem.com\/widgets\/q?ServiceVersion=20070822&amp;OneJS=1&amp;Operation=GetAdHtml&amp;MarketPlace=US&amp;source=ac&amp;ref=tf_til&amp;ad_type=product_link&amp;tracking_id=hobbyspace&amp;marketplace=amazon&amp;region=US&amp;placement=B00A1EZJ6U&amp;asins=B00A1EZJ6U&amp;linkId=e33864ecf80dc71cbf6b74434a0ae471&amp;show_border=true&amp;link_opens_in_new_window=true&amp;price_color=333333&amp;title_color=0066c0&amp;bg_color=ffffff\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>December 21st of this year will mark the 50th anniversary of the launch of the\u00a0Apollo 8 mission\u00a0to the Moon. Astronauts\u00a0Frank Borman,\u00a0James Lovell, and William Anders\u00a0became the first humans to leave Earth and orbit another celestial body. The mission was extremely risky. The\u00a0Saturn\u00a0V\u00a0rocket had only launched twice before and never with a crew and on the &hellip; <a href=\"https:\/\/hobbyspace.com\/Blog\/?p=16224\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Run a realistic Apollo 8 guidance computer emulation<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[6,40,26],"tags":[],"class_list":["post-16224","post","type-post","status-publish","format-standard","hentry","category-history","category-simulators","category-space-systems"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-4dG","jetpack-related-posts":[{"id":17395,"url":"https:\/\/hobbyspace.com\/Blog\/?p=17395","url_meta":{"origin":16224,"position":0},"title":"On its 50th anniversary, Apollo 8 gets the appreciation it deserves","author":"TopSpacer","date":"December 22, 2018","format":false,"excerpt":"The Apollo 8 mission launched on Dec. 21, 1968 with astronauts Frank Borman, James Lovell Jr. and William Anders on board. About two and half hours after liftoff, the S-IV third stage fired for a second time and put their spacecraft on a trajectory to the Moon. The crew members\u2026","rel":"","context":"In &quot;History&quot;","block_context":{"text":"History","link":"https:\/\/hobbyspace.com\/Blog\/?cat=6"},"img":{"alt_text":"","src":"\/\/ir-na.amazon-adsystem.com\/e\/ir?t=hobbyspace&l=am2&o=1&a=B07FD3KPRG","width":350,"height":200},"classes":[]},{"id":277,"url":"https:\/\/hobbyspace.com\/Blog\/?p=277","url_meta":{"origin":16224,"position":1},"title":"A week of remembering","author":"TopSpacer","date":"January 29, 2013","format":false,"excerpt":"This week marks anniversaries for three tragedies for NASA and the United States: Apollo 1 - January 27, 1967\u00a0 - a fire in their capsule during a test on the pad kills three Apollo astronauts: Gus Grissom Ed White Roger Chaffee Challenger STS 51-L -\u00a0 January 28, 1986 - leak\u2026","rel":"","context":"In &quot;History&quot;","block_context":{"text":"History","link":"https:\/\/hobbyspace.com\/Blog\/?cat=6"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/kzPkRz9Eqow\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5833,"url":"https:\/\/hobbyspace.com\/Blog\/?p=5833","url_meta":{"origin":16224,"position":2},"title":"Apollo Image Atlas holds 25,000 Apollo-Saturn mission photos","author":"TopSpacer","date":"December 26, 2013","format":false,"excerpt":"If you are looking for an image from the Apollo program, check out the\u00a0Apollo Image Atlas - Lunar and Planetary Institute\u00a0- \"The Apollo Image Atlas is a comprehensive collection of Apollo-Saturn mission photography. Included are almost 25,000 lunar images, both from orbit and from the moon's surface, as well as\u2026","rel":"","context":"In &quot;History&quot;","block_context":{"text":"History","link":"https:\/\/hobbyspace.com\/Blog\/?cat=6"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":17281,"url":"https:\/\/hobbyspace.com\/Blog\/?p=17281","url_meta":{"origin":16224,"position":3},"title":"Listening to &#8220;Genesis: The Story of Apollo 8&#8221;","author":"TopSpacer","date":"December 12, 2018","format":false,"excerpt":"December 21st will mark the 50th anniversary of the launch of Apollo 8, the first time humans left earth orbit to reach another celestial object. While the landing on the surface of the Moon by Apollo 11 dominates the public's view of America's lunar program, it was the orbiting of\u2026","rel":"","context":"In &quot;History&quot;","block_context":{"text":"History","link":"https:\/\/hobbyspace.com\/Blog\/?cat=6"},"img":{"alt_text":"","src":"\/\/ir-na.amazon-adsystem.com\/e\/ir?t=hobbyspace&l=am2&o=1&a=B07FD3KPRG","width":350,"height":200},"classes":[]},{"id":13999,"url":"https:\/\/hobbyspace.com\/Blog\/?p=13999","url_meta":{"origin":16224,"position":4},"title":"SpaceX to fly two private citizens on a flight around the Moon","author":"TopSpacer","date":"February 28, 2017","format":false,"excerpt":"SpaceX announced on Monday that two private persons will ride a Crew Dragon spacecraft launched by a Falcon Heavy on a trip around the Moon. The target date for the flight is late 2018.\u00a0TMRO.tv's\u00a0Lisa Stojanovsk gives an overview of the endeavor: https:\/\/youtu.be\/w6aBKt0H4VY The first launch of the Falcon Heavy is\u2026","rel":"","context":"In &quot;Rockets&quot;","block_context":{"text":"Rockets","link":"https:\/\/hobbyspace.com\/Blog\/?cat=5"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/w6aBKt0H4VY\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":10309,"url":"https:\/\/hobbyspace.com\/Blog\/?p=10309","url_meta":{"origin":16224,"position":5},"title":"Video: Apollo mission patches come together in 3-D animation","author":"TopSpacer","date":"April 7, 2015","format":false,"excerpt":"Neil Smith has created an excellent\u00a03-D animation showing each of the\u00a0Apollo mission patches form from\u00a0its respective symbols: Tribute Video to Apollo Missions -\u00a0The Smiths' Occasional Blog Artist adds motion to NASA's iconic Apollo moon mission patches - collectSPACE https:\/\/youtu.be\/8vdqcxEuiic","rel":"","context":"In &quot;History&quot;","block_context":{"text":"History","link":"https:\/\/hobbyspace.com\/Blog\/?cat=6"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/8vdqcxEuiic\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/16224","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16224"}],"version-history":[{"count":3,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/16224\/revisions"}],"predecessor-version":[{"id":16228,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/16224\/revisions\/16228"}],"wp:attachment":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}