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	Comments on: Engineers successfully switch thrusters on Voyager-1	</title>
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		<title>
		By: Robin K Juhl		</title>
		<link>https://behindtheblack.com/behind-the-black/points-of-information/engineers-successfully-switch-thrusters-on-voyager-1/#comment-1518926</link>

		<dc:creator><![CDATA[Robin K Juhl]]></dc:creator>
		<pubDate>Fri, 13 Sep 2024 12:18:32 +0000</pubDate>
		<guid isPermaLink="false">https://behindtheblack.com/?p=108248#comment-1518926</guid>

					<description><![CDATA[There is a good visualization of spacecraft escaping the Solar System at
https://www.heavens-above.com/SolarEscape.aspx

Also a great site for seeing satellites &#038; such .  You can set it up with your location and get exact times &#038; where to look.]]></description>
			<content:encoded><![CDATA[<p>There is a good visualization of spacecraft escaping the Solar System at<br />
<a href="https://www.heavens-above.com/SolarEscape.aspx" rel="nofollow ugc">https://www.heavens-above.com/SolarEscape.aspx</a></p>
<p>Also a great site for seeing satellites &amp; such .  You can set it up with your location and get exact times &amp; where to look.</p>
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		<title>
		By: Ronaldus Magnus		</title>
		<link>https://behindtheblack.com/behind-the-black/points-of-information/engineers-successfully-switch-thrusters-on-voyager-1/#comment-1518647</link>

		<dc:creator><![CDATA[Ronaldus Magnus]]></dc:creator>
		<pubDate>Wed, 11 Sep 2024 21:55:47 +0000</pubDate>
		<guid isPermaLink="false">https://behindtheblack.com/?p=108248#comment-1518647</guid>

					<description><![CDATA[A while ago, while commenting on the Voyager Spacecraft, Mr Zimmerman mentioned that the longest lasting computers use magnetic tape. Incredible! The current Voyager Mission Specialists are amazing. I wonder if they could refurbish my 8-track player. 

&quot;&quot;The Voyager Computer Command System (CCS) would have 70kb of memory. In-flight programming allowed for new routines and programs to be uploaded regularly in non-volatile memory and eliminated the need for large amounts of memory to be required onboard.

The original software for the Voyager probes was written using Fortran 5 then ported to Fortran 77, and today there is some porting in C. Low-level, light-weight software is increasingly important as the probes move farther and farther away from Earth and communication becomes slower.

The management side of the Voyager computer system also saw some changes to the typical structure; H. Kent Frewing, a spacecraft software engineer, would manage the engineers responsible for each computer system and up to four programmers would work together on the project at once. An On-Board Software Design Team was put together to guide software development, and software validation was completed by the Capability Demonstration Laboratory. Once the initial software had been developed, hardware that was set up in the same configuration that would be used onboard the spacecraft would then be used to test and continue development.&quot;&quot;

https://www.allaboutcircuits.com/news/voyager-mission-anniversary-computers-command-data-attitude-control/

Just before the Voyagers go silent, wouldn&#039;t it be fun to load more music? I realize there is the gold-plated phonograph record. Perhaps add Rockin In The Free World, or a Ronald Reagan speech.]]></description>
			<content:encoded><![CDATA[<p>A while ago, while commenting on the Voyager Spacecraft, Mr Zimmerman mentioned that the longest lasting computers use magnetic tape. Incredible! The current Voyager Mission Specialists are amazing. I wonder if they could refurbish my 8-track player. </p>
<p>&#8220;&#8221;The Voyager Computer Command System (CCS) would have 70kb of memory. In-flight programming allowed for new routines and programs to be uploaded regularly in non-volatile memory and eliminated the need for large amounts of memory to be required onboard.</p>
<p>The original software for the Voyager probes was written using Fortran 5 then ported to Fortran 77, and today there is some porting in C. Low-level, light-weight software is increasingly important as the probes move farther and farther away from Earth and communication becomes slower.</p>
<p>The management side of the Voyager computer system also saw some changes to the typical structure; H. Kent Frewing, a spacecraft software engineer, would manage the engineers responsible for each computer system and up to four programmers would work together on the project at once. An On-Board Software Design Team was put together to guide software development, and software validation was completed by the Capability Demonstration Laboratory. Once the initial software had been developed, hardware that was set up in the same configuration that would be used onboard the spacecraft would then be used to test and continue development.&#8221;&#8221;</p>
<p><a href="https://www.allaboutcircuits.com/news/voyager-mission-anniversary-computers-command-data-attitude-control/" rel="nofollow ugc">https://www.allaboutcircuits.com/news/voyager-mission-anniversary-computers-command-data-attitude-control/</a></p>
<p>Just before the Voyagers go silent, wouldn&#8217;t it be fun to load more music? I realize there is the gold-plated phonograph record. Perhaps add Rockin In The Free World, or a Ronald Reagan speech.</p>
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		<title>
		By: Blair Ivey		</title>
		<link>https://behindtheblack.com/behind-the-black/points-of-information/engineers-successfully-switch-thrusters-on-voyager-1/#comment-1518632</link>

		<dc:creator><![CDATA[Blair Ivey]]></dc:creator>
		<pubDate>Wed, 11 Sep 2024 19:34:59 +0000</pubDate>
		<guid isPermaLink="false">https://behindtheblack.com/?p=108248#comment-1518632</guid>

					<description><![CDATA[&quot;I don&#039;t care about what anything was DESIGNED to do, I care about what it CAN do.&quot;

Gene Kranz  &#039;Apollo 13&#039;  Universal 1995]]></description>
			<content:encoded><![CDATA[<p>&#8220;I don&#8217;t care about what anything was DESIGNED to do, I care about what it CAN do.&#8221;</p>
<p>Gene Kranz  &#8216;Apollo 13&#8217;  Universal 1995</p>
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		<title>
		By: David Ross		</title>
		<link>https://behindtheblack.com/behind-the-black/points-of-information/engineers-successfully-switch-thrusters-on-voyager-1/#comment-1518631</link>

		<dc:creator><![CDATA[David Ross]]></dc:creator>
		<pubDate>Wed, 11 Sep 2024 18:59:03 +0000</pubDate>
		<guid isPermaLink="false">https://behindtheblack.com/?p=108248#comment-1518631</guid>

					<description><![CDATA[Here&#039;s where the Voyagers be at: https://science.nasa.gov/mission/voyager/where-are-they-now/
164.71 AU #1, 137.16 AU #2.]]></description>
			<content:encoded><![CDATA[<p>Here&#8217;s where the Voyagers be at: <a href="https://science.nasa.gov/mission/voyager/where-are-they-now/" rel="nofollow ugc">https://science.nasa.gov/mission/voyager/where-are-they-now/</a><br />
164.71 AU #1, 137.16 AU #2.</p>
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