{"id":1640,"date":"2013-04-12T04:53:21","date_gmt":"2013-04-12T04:53:21","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=1640"},"modified":"2013-04-12T04:53:21","modified_gmt":"2013-04-12T04:53:21","slug":"keplers-reaction-wheel-problems-continue","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=1640","title":{"rendered":"Kepler’s reaction wheel problems continue."},"content":{"rendered":"

The very successful exoplanet finding spacecraft Kepler<\/a> continues to have problems with a reaction wheel. If it fails this will cripple the mission if not end it completely: Kepler reaction wheel still problematic after mitigation – Spaceflight Now<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

The very successful exoplanet finding spacecraft Kepler continues to have problems with a reaction wheel. If it fails this will cripple the mission if not end it completely: Kepler reaction wheel still problematic after mitigation – Spaceflight Now<\/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":[12,46],"tags":[],"class_list":["post-1640","post","type-post","status-publish","format-standard","hentry","category-astronomy","category-exoplanets"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-qs","jetpack-related-posts":[{"id":323,"url":"https:\/\/hobbyspace.com\/Blog\/?p=323","url_meta":{"origin":1640,"position":0},"title":"Kepler planet hunter back in action","author":"TopSpacer","date":"January 31, 2013","format":false,"excerpt":"The Kepler orbital observatory is back to planet hunting after taking ten days off to give one of its reaction wheels, which had been showing signs of abnormal friction, some days off\u00a0 (see earlier post here) : Kepler resumes data collection after safe mode - Spaceflight Now Managers put Kepler\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":150,"url":"https:\/\/hobbyspace.com\/Blog\/?p=150","url_meta":{"origin":1640,"position":1},"title":"Kepler exoplanet scan suspended temporarily","author":"TopSpacer","date":"January 21, 2013","format":false,"excerpt":"The lifetime of Kepler, the great exoplanet finding machine, may be cut prematurely short if efforts to save a balky reaction wheel fall short: Kepler glitch suspends NASA's search for new planets - sen.com Kepler Mission Manager Update - NASA Twitter \/ mrtommyb: \"To be clear, we are resting the\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":4004,"url":"https:\/\/hobbyspace.com\/Blog\/?p=4004","url_meta":{"origin":1640,"position":2},"title":"Kepler must switch to other missions – no reaction wheel fix found","author":"TopSpacer","date":"August 16, 2013","format":false,"excerpt":"Efforts to resurrect the broken reaction wheels on the Kepler space observatory have failed. The spacecraft can still do useful science but not exoplanet transit searches, which requires the extremely stable and precise pointing capabilities provided by 3 working reaction wheels. NASA trying to find new use for crippled Kepler\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3795,"url":"https:\/\/hobbyspace.com\/Blog\/?p=3795","url_meta":{"origin":1640,"position":3},"title":"Update on efforts to revive the Kepler spacecraft","author":"TopSpacer","date":"August 4, 2013","format":false,"excerpt":"The amazing successful exoplanet finding spacecraft Kepler went out of action last May when one of its reaction wheels (basically an electric powered gyroscope) ceased to function properly. The spacecraft has four reaction wheels and needs at least three to point its telescope with sufficient stability and accuracy to carry\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"Reaction wheel","src":"https:\/\/i0.wp.com\/www.nasa.gov\/sites\/default\/files\/styles\/226xvariable_height\/public\/reaction_wheel.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2303,"url":"https:\/\/hobbyspace.com\/Blog\/?p=2303","url_meta":{"origin":1640,"position":4},"title":"Kepler space telescope loses reaction wheel – exoplanet searching crippled","author":"TopSpacer","date":"May 15, 2013","format":false,"excerpt":"With the loss of another reaction wheel, he Kepler space telescope has lost the ability to maintain the stable orientation needed for observing stars to detect transits of exoplanets: Kepler Mission Manager Update - NASA. The managers of the project, however, insist that the mission is not finished and they\u2026","rel":"","context":"In "Exoplanets"","block_context":{"text":"Exoplanets","link":"https:\/\/hobbyspace.com\/Blog\/?cat=46"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3178,"url":"https:\/\/hobbyspace.com\/Blog\/?p=3178","url_meta":{"origin":1640,"position":5},"title":"Kepler Observatory operators will try to heal failed reaction wheels","author":"TopSpacer","date":"July 4, 2013","format":false,"excerpt":"There's still some hope for the orbiting Kepler exoplanet searcher: Kepler Mission Manager Update: Preparing for Recovery Operations in Point Rest State (PRS) have continued for the spacecraft. The spacecraft was placed in PRS on May 15, 2013, after the failure of reaction wheel 4. It has been 53 days\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/1640","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=1640"}],"version-history":[{"count":2,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/1640\/revisions"}],"predecessor-version":[{"id":1642,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/1640\/revisions\/1642"}],"wp:attachment":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}