{"id":10715,"date":"2015-06-04T23:13:48","date_gmt":"2015-06-05T03:13:48","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=10715"},"modified":"2015-06-04T23:13:48","modified_gmt":"2015-06-05T03:13:48","slug":"the-lightsail-goes-silent-once-more","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=10715","title":{"rendered":"The LightSail goes silent once more"},"content":{"rendered":"<p>After c<a href=\"http:\/\/hobbyspace.com\/Blog\/?p=10709\" target=\"_blank\">oming\u00a0back to life<\/a> and appearing to deploy its solar panels, the <a href=\"http:\/\/planetary.org\" target=\"_blank\">Planetary Society<\/a>&#8216;s\u00a0<a href=\"http:\/\/sail.planetary.org\/\" target=\"_blank\">LightSail<\/a>\u00a0 has gone quiet again, probably due to drained batteries. They are expected to recharge eventually and allow the spacecraft to resume communicating:\u00a0<a href=\"http:\/\/www.planetary.org\/blogs\/jason-davis\/2015\/20150604-lightsail-silent-again.html?referrer=http:\/\/t.co\/JDFNWN40Yc\" target=\"_d\">LightSail Falls Silent; Battery Glitch Suspected &#8211;\u00a0The Planetary Society<\/a>\u00a0&#8211;<\/p>\n<p style=\"padding-left: 30px;\"><em>If LightSail is suffering from a chronic undervoltage condition, help could arrive naturally, Spencer said. &#8220;The spacecraft orbit is in a geometry where eclipse occurs roughly 2100 seconds each orbit. \u00a0This is near the maximum eclipse duration that LightSail-A will experience during the mission. Over the next couple of weeks, the orbit will precess to a full-sun condition, where the entire orbit is sunlit.&#8221;<\/em><\/p>\n<p style=\"padding-left: 30px;\"><em>When contact with LightSail is reestablished, the sail deployment sequence will likely be triggered as soon as battery levels are heathy enough to proceed.<\/em><\/p>\n<p>For the latest updates:<\/p>\n<ul>\n<li><a href=\"http:\/\/www.planetary.org\/blogs\/jason-davis\">Jason Davis blog<\/a><\/li>\n<li><a href=\"http:\/\/sail.planetary.org\/missioncontrol\" target=\"_d\">Mission Control Center \u2013\u00a0The Planetary Society<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>After coming\u00a0back to life and appearing to deploy its solar panels, the Planetary Society&#8216;s\u00a0LightSail\u00a0 has gone quiet again, probably due to drained batteries. They are expected to recharge eventually and allow the spacecraft to resume communicating:\u00a0LightSail Falls Silent; Battery Glitch Suspected &#8211;\u00a0The Planetary Society\u00a0&#8211; If LightSail is suffering from a chronic undervoltage condition, help could &hellip; <a href=\"https:\/\/hobbyspace.com\/Blog\/?p=10715\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">The LightSail goes silent once more<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3,35,26],"tags":[],"class_list":["post-10715","post","type-post","status-publish","format-standard","hentry","category-activism","category-diy-space","category-space-systems"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-2MP","jetpack-related-posts":[{"id":10678,"url":"https:\/\/hobbyspace.com\/Blog\/?p=10678","url_meta":{"origin":10715,"position":0},"title":"Planetary Society&#8217;s LightSail awakens and sends a signal","author":"TopSpacer","date":"May 31, 2015","format":false,"excerpt":"[ Update June.1.15: The LightSail spacecraft may unfurl its solar sail this week:\u00a0LightSail Team Prepares for Possible Tuesday Sail Deployment -\u00a0The Planetary Society. This afternoon, mission managers gave the go-ahead for a manual solar sail deployment as early as Tuesday, June 2 at 11:44 a.m. EDT (15:44 UTC), providing the\u2026","rel":"","context":"In &quot;Activism&quot;","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":10345,"url":"https:\/\/hobbyspace.com\/Blog\/?p=10345","url_meta":{"origin":10715,"position":1},"title":"Video: Planetary Society Lightsail-A prepared for May launch","author":"TopSpacer","date":"April 10, 2015","format":false,"excerpt":"The video shows highlights of the preparation of the\u00a0Planetary Society's\u00a0LightSail - A\u00a0for its launch to orbit in May on an Atlas V rocket: In January 2015, the LightSail team had their last chance to touch the LightSail-A Spacecraft. They handed it over to Cal Poly where it was integrated into\u2026","rel":"","context":"In &quot;Activism&quot;","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/2Go4umX7Ayc\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":10661,"url":"https:\/\/hobbyspace.com\/Blog\/?p=10661","url_meta":{"origin":10715,"position":2},"title":"Planetary Society waits to hear from the LightSail","author":"TopSpacer","date":"May 27, 2015","format":false,"excerpt":"The Planetary Society's first LightSail, a prototype solar sail, went to orbit last week (see post here). For several days communications with the spacecraft went well. The plan was to wait until mid-June to unfurl the sail. However, late in the week a software flaw\u00a0caused the system to shut down\u2026","rel":"","context":"In &quot;Activism&quot;","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":12272,"url":"https:\/\/hobbyspace.com\/Blog\/?p=12272","url_meta":{"origin":10715,"position":3},"title":"Video: Planetary Society&#8217;s LightSail 2 tests its sail","author":"TopSpacer","date":"March 1, 2016","format":false,"excerpt":"Here is an update on the Planetary Society's LightSail 2 project:\u00a0Meet LightSail 2, The Planetary Society's new solar sailing CubeSat -\u00a0The Planetary Society. Last June, LightSail 1 successfully tested the deployment of its sail in orbit. The goal of LightSail 2 is to achieve\u00a0propulsion from the pressure of sunlight. It\u2026","rel":"","context":"In &quot;Activism&quot;","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/K7UBWz2mvro\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":10622,"url":"https:\/\/hobbyspace.com\/Blog\/?p=10622","url_meta":{"origin":10715,"position":4},"title":"Planetary Society LightSail in orbit","author":"TopSpacer","date":"May 21, 2015","format":false,"excerpt":"The Atlas V launch mentioned earlier went off well on Wednesday: https:\/\/youtu.be\/l7Riq9rr4ao The X-37B and the ten CubeSats secondary payloads were deployed, including the Planetary Society's LightSail and it began transmitting its status: Liftoff! LightSail Sails into Space aboard Atlas V Rocket - The Planetary Society LightSail Sends First Data\u2026","rel":"","context":"In &quot;Activism&quot;","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/l7Riq9rr4ao\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":19091,"url":"https:\/\/hobbyspace.com\/Blog\/?p=19091","url_meta":{"origin":10715,"position":5},"title":"Student and amateur CubeSat news roundup &#8211; June.23.2019","author":"TopSpacer","date":"June 23, 2019","format":false,"excerpt":"A sampling of recent articles, press releases, etc. related to student and amateur CubeSat \/ SmallSat projects and programs: ** Cranfield University team's Icarus-1 drag sail successfully deployed on Surrey Satellite's TechDemoSat-1 smallsat in orbit back in May: TechDemoSat-1 on-board camera captures drag sail deployment | SSTL TechDemoSat-1, a 150\u2026","rel":"","context":"In &quot;Amateur\/Student Satellite&quot;","block_context":{"text":"Amateur\/Student Satellite","link":"https:\/\/hobbyspace.com\/Blog\/?cat=4"},"img":{"alt_text":"TechDemoSat-1 sail deployed May 2019","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2019\/06\/TechDemoSat-1-sail-deployed-May-2019_800x607.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/10715","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=10715"}],"version-history":[{"count":1,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/10715\/revisions"}],"predecessor-version":[{"id":10716,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/10715\/revisions\/10716"}],"wp:attachment":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10715"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10715"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}