Embed Notice

HTML Code

<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://fosstodon.org/users/AkaSci/statuses/114508326145377140">AkaSci 🛰️ (akasci@fosstodon.org)'s status on Thursday, 15-May-2025 06:38:10 JST</a><a href="https://fosstodon.org/@AkaSci" title="akasci@fosstodon.org"><img src="https://gnusocial.jp/avatar/20805-48-20221219024513.webp" width="48" height="48" alt="AkaSci 🛰️" style="position: absolute; left: 0; top: 0;">AkaSci 🛰️</a></section><article><p>The venerable Voyager 1 spacecraft underwent another surgery in March.</p><p>The team had to revive a thruster used for roll control whose heaters had failed in 2004. The tubes of the backup thrusters currently in use are getting clogged and may fail this year.</p><p>The delicate operation required turning on the failed thruster and flipping a switch to enable its heater and 🤞</p><p>All very tricky and risky operations, performed from 23 light-hours away on 1970’s era hardware.</p><p>👏<br><a href="https://www.jpl.nasa.gov/news/nasas-voyager-1-revives-backup-thrusters-before-command-pause/" rel="nofollow noreferrer">https://www.jpl.nasa.gov/news/nasas-voyager-1-revives-backup-thrusters-before-command-pause/</a><br>1/n</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/5054271#notice-9908293">In conversation</a><time datetime="2025-05-15T06:38:10+09:00" title="Thursday, 15-May-2025 06:38:10 JST">about 2 days ago</time> <span>from <span><a href="https://fosstodon.org/@AkaSci/114508326145377140" rel="external" title="Sent from fosstodon.org via ActivityPub">fosstodon.org</a></span></span><a href="https://fosstodon.org/@AkaSci/114508326145377140">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/4627376">1. Diagram of Voyager spacecraft with its major components.
Source https://solarsystem.nasa.gov/basics/Spacecraft-Information-Voyagers/2. Graphic showing timeline of Voyager 1 switching between roll thruster sets1977 - Roll thruster set 1 2004 - Roll thruster set 1 heaters lose power 
Switched to Roll thruster set 2 2025 - Roll thruster set 2 getting clogged 
Possibility of failure in fall 20252025 – Team diagnoses that a heater switch in roll thruster set 1 flipped in 2004 and can be resetMarch 18 – Commands sent to turn on Roll thruster set 1 and flip the heater switch
If Roll thrusters fired because the star tracker drifted and if the heater was still off, then an explosion would destroy Voyager 1March 20 – After an agonizing 2-day wait, telemetry received that the heaters had successfully turned on!May 5 – DSN Canberra upgrade will cause loss of comms until Feb 2026, with brief periods of operation in Aug and Dec</a></label><br><a href="https://cdn.fosstodon.org/media_attachments/files/114/508/317/176/724/964/original/a3f27e593e42e102.png" rel="external">https://cdn.fosstodon.org/media_attachments/files/114/508/317/176/724/964/original/a3f27e593e42e102.png</a></li><li><article><header><div>Domain not in remote thumbnail source whitelist: d2pn8kiwq2w21t.cloudfront.net</div><h5><a href="https://www.jpl.nasa.gov/news/nasas-voyager-1-revives-backup-thrusters-before-command-pause/">NASA’s Voyager 1 Revives Backup Thrusters Before Command Pause</a></h5><div></div></header><div>The mission team wanted to fix the thrusters, deemed unusable decades ago, before the radio antenna that sends commands to the probe went offline for upgrades.</div><footer></footer></article></li></ol></footer></blockquote>

Corresponding Notice

Embed this notice
AkaSci 🛰️ (akasci@fosstodon.org)'s status on Thursday, 15-May-2025 06:38:10 JST AkaSci 🛰️
The venerable Voyager 1 spacecraft underwent another surgery in March.
The team had to revive a thruster used for roll control whose heaters had failed in 2004. The tubes of the backup thrusters currently in use are getting clogged and may fail this year.
The delicate operation required turning on the failed thruster and flipping a switch to enable its heater and 🤞
All very tricky and risky operations, performed from 23 light-hours away on 1970’s era hardware.
👏
https://www.jpl.nasa.gov/news/nasas-voyager-1-revives-backup-thrusters-before-command-pause/
1/n
In conversationabout 2 days ago from fosstodon.orgpermalink
Attachments
1. 1. Diagram of Voyager spacecraft with its major components. Source https://solarsystem.nasa.gov/basics/Spacecraft-Information-Voyagers/ 2. Graphic showing timeline of Voyager 1 switching between roll thruster sets 1977 - Roll thruster set 1 2004 - Roll thruster set 1 heaters lose power Switched to Roll thruster set 2 2025 - Roll thruster set 2 getting clogged Possibility of failure in fall 2025 2025 – Team diagnoses that a heater switch in roll thruster set 1 flipped in 2004 and can be reset March 18 – Commands sent to turn on Roll thruster set 1 and flip the heater switch If Roll thrusters fired because the star tracker drifted and if the heater was still off, then an explosion would destroy Voyager 1 March 20 – After an agonizing 2-day wait, telemetry received that the heaters had successfully turned on! May 5 – DSN Canberra upgrade will cause loss of comms until Feb 2026, with brief periods of operation in Aug and Dec
  https://cdn.fosstodon.org/media_attachments/files/114/508/317/176/724/964/original/a3f27e593e42e102.png
2. Domain not in remote thumbnail source whitelist: d2pn8kiwq2w21t.cloudfront.net
  NASA’s Voyager 1 Revives Backup Thrusters Before Command Pause
  The mission team wanted to fix the thrusters, deemed unusable decades ago, before the radio antenna that sends commands to the probe went offline for upgrades.

Public

Embed Notice

HTML Code

Corresponding Notice