{"id":8184,"date":"2014-06-25T14:11:41","date_gmt":"2014-06-25T18:11:41","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=8184"},"modified":"2014-06-25T14:11:41","modified_gmt":"2014-06-25T18:11:41","slug":"isee-3-reboot-project-preparing-for-first-thruster-firing","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=8184","title":{"rendered":"ISEE-3 Reboot Project – preparing for first thruster firing"},"content":{"rendered":"

The\u00a0ISEE-3 Reboot Project<\/a>\u00a0is making progress towards resurrecting the\u00a0International Cometary Explorer<\/a>\u00a0from its decades long hiatus in orbit around the sun. (See previous posts<\/a> on the ISEE-3 reboot such as\u00a0here<\/a> and here<\/a>.)\u00a0<\/span>Here is the news from yesterday:\u00a0<\/span>ISEE-3 Status 24 June 2014: We Almost Did The Spin-up Burn – Space College<\/a><\/p>\n

During our session with Arecibo today we came very, very close to firing the thrusters on ISEE-3 for its spin-up maneuver. But we were not able to complete the process and fire the thrusters. The spacecraft was completely configured for a thruster firing during today’s pass. We reduced the number of pulses from 11 to 1 to make certain that we had the proper commands in place. If that engine firing proceeded successfully we’d follow with the remaining 10 pulses so as to spin up the spacecraft to the required rotation rate. As it happened we were unable to get confirmation on the very last command and put a halt to the procedure.<\/em><\/p>\n

The spacecraft is in a safe mode – one that has been verified by telemetry. You can follow the real time Tweets of this session by looking at our Twitter account at\u00a0@ISEE3Reboot<\/a>. We are waiting for word of our next window at Arecibo. We are now confident that we will be able to perform the required thruster firings to spin up the spacecraft during the next opportunity.<\/em><\/p>\n

And here is an entertaining article about the project and about the colorful\u00a0Bob Farquhar\u00a0who managed the original ISEE-3 program:\u00a0For him, satellite reboot is about reconnecting with an old friend\u00a0–\u00a0Los Angeles Times<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

The\u00a0ISEE-3 Reboot Project\u00a0is making progress towards resurrecting the\u00a0International Cometary Explorer\u00a0from its decades long hiatus in orbit around the sun. (See previous posts on the ISEE-3 reboot such as\u00a0here and here.)\u00a0Here is the news from yesterday:\u00a0ISEE-3 Status 24 June 2014: We Almost Did The Spin-up Burn – Space College During our session with Arecibo today we … Continue reading ISEE-3 Reboot Project – preparing for first thruster firing<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","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":[35,14,32],"tags":[],"class_list":["post-8184","post","type-post","status-publish","format-standard","hentry","category-diy-space","category-space-participation","category-space-radio"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-280","jetpack-related-posts":[{"id":8237,"url":"https:\/\/hobbyspace.com\/Blog\/?p=8237","url_meta":{"origin":8184,"position":0},"title":"ISEE-3 engines fired successfully","author":"TopSpacer","date":"July 3, 2014","format":false,"excerpt":"Congratulations to the\u00a0ISEE-3 Reboot Project\u00a0team on successfully firing the thrusters of the 36 year old\u00a0International Cometary Explorer\u00a0to spin it back up: \u00a0ISEE-3 Engines Fired For Spin-Up - Space College Additional ISEE-3 Spin-up Confirmation - Space College ISEE-3 Current Location 3 July 2014 - Space College From Wednesday: Today we fired\u2026","rel":"","context":"In "DIY space"","block_context":{"text":"DIY space","link":"https:\/\/hobbyspace.com\/Blog\/?cat=35"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8690,"url":"https:\/\/hobbyspace.com\/Blog\/?p=8690","url_meta":{"origin":8184,"position":1},"title":"ISEE-3 project update and plans","author":"TopSpacer","date":"August 29, 2014","format":false,"excerpt":"Dennis Wingo gives an update on the ISEE-3 reboot satellite\u00a0\u00a0project, including what it accomplished and what they hope to do next\u00a0:\u00a0ISEE-3 Post Lunar Flyby Status and Modification of Mission Goals - \u00a0denniswingo Mission Status Communication with the ISEE-3 satellite was successfully re-established with the goal of commanding the satellite to\u2026","rel":"","context":"In "DIY space"","block_context":{"text":"DIY space","link":"https:\/\/hobbyspace.com\/Blog\/?cat=35"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8324,"url":"https:\/\/hobbyspace.com\/Blog\/?p=8324","url_meta":{"origin":8184,"position":2},"title":"ISEE-3 Reboot Project: Update on thruster debugging with crowd-sourced expertise","author":"TopSpacer","date":"July 16, 2014","format":false,"excerpt":"I\u00a0posted\u00a0earlier that the reports that the\u00a0ISEE-3 Reboot Project\u00a0had given up on\u00a0restarting the propulsion system\u00a0were premature. Project member Dennis Wingo gives a detailed account of the crowd-sourced investigation\u00a0into what is going on with the thrusters and into\u00a0possible solutions to the failure to get substantial thrust from them:\u00a0We Are Borg: Crowdsourced ISEE-3\u2026","rel":"","context":"In "DIY space"","block_context":{"text":"DIY space","link":"https:\/\/hobbyspace.com\/Blog\/?cat=35"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8058,"url":"https:\/\/hobbyspace.com\/Blog\/?p=8058","url_meta":{"origin":8184,"position":3},"title":"ISEE-3 Reboot Project update","author":"TopSpacer","date":"June 8, 2014","format":false,"excerpt":"The\u00a0ISEE-3 Reboot Project\u00a0(see the recent\u00a0post\u00a0ISEE-3 Reboot Project takes command of the spacecraft) continues to make progress in the effort to resurrect and re-target NASA's\u00a0International Sun-Earth Explorer (ISEE-3) spacecraft, launched in 1978 to study the earth's magnetosphere but re-targeted to study two comets. \u00a0the Reboot Project will try to return the\u2026","rel":"","context":"In "DIY space"","block_context":{"text":"DIY space","link":"https:\/\/hobbyspace.com\/Blog\/?cat=35"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/CLPG15HXkv8\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":7969,"url":"https:\/\/hobbyspace.com\/Blog\/?p=7969","url_meta":{"origin":8184,"position":4},"title":"ISEE-3 Reboot Project takes command of the spacecraft","author":"TopSpacer","date":"May 29, 2014","format":false,"excerpt":"The\u00a0ISEE-3 Reboot Project\u00a0(see earlier post)\u00a0is now talking with the spacecraft : We Are Now In Command of the ISEE-3 Spacecraft The ISEE-3 Reboot Project is pleased to announce that our team has established two-way communication with the ISEE-3 spacecraft and has begun commanding it to perform specific functions. Over the\u2026","rel":"","context":"In "DIY space"","block_context":{"text":"DIY space","link":"https:\/\/hobbyspace.com\/Blog\/?cat=35"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8510,"url":"https:\/\/hobbyspace.com\/Blog\/?p=8510","url_meta":{"origin":8184,"position":5},"title":"ISEE-3 citizen science mission","author":"TopSpacer","date":"August 7, 2014","format":false,"excerpt":"Since my\u00a0last post on\u00a0the\u00a0ISEE-3 Reboot Project, the team determined that it was impossible to restart the propulsion system\u00a0due to the absence of the nitrogen pressurant gas needed to force fuel into the thrusters. 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