Editing Talk:2115: Plutonium

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Re: "Note that the radioactive material obviously doesn't produce this energy forever, although it can produce it so long the device will break before it gets out of energy."  The main problem with Voyager I and Voyager II is not that the devices on board have been broken, exhausted a finite reserve or otherwise failed, but that the power supply can not keep most of the machine powered anymore.  In fact, if there was enough electrical power, most of the cameras and other sensors would still work; they might see much that far from the sun and other bodies, but they would work.  The plutonium power source undergoes exponential decay, producing proportionally less power each year and each year, the NASA scientists have to decide which devices on the spacecraft need to power-down, never to turn on again, or maybe a device is so important, but needs so much power that they will turn it on for less and less time, sort of like rotating brown-outs.  I think the Pioneer probes are in the same boat.  [[User:Nutster|Nutster]] ([[User talk:Nutster|talk]]) 04:13, 23 February 2019 (UTC)
 
Re: "Note that the radioactive material obviously doesn't produce this energy forever, although it can produce it so long the device will break before it gets out of energy."  The main problem with Voyager I and Voyager II is not that the devices on board have been broken, exhausted a finite reserve or otherwise failed, but that the power supply can not keep most of the machine powered anymore.  In fact, if there was enough electrical power, most of the cameras and other sensors would still work; they might see much that far from the sun and other bodies, but they would work.  The plutonium power source undergoes exponential decay, producing proportionally less power each year and each year, the NASA scientists have to decide which devices on the spacecraft need to power-down, never to turn on again, or maybe a device is so important, but needs so much power that they will turn it on for less and less time, sort of like rotating brown-outs.  I think the Pioneer probes are in the same boat.  [[User:Nutster|Nutster]] ([[User talk:Nutster|talk]]) 04:13, 23 February 2019 (UTC)
 
:Also because of the many restrictions on use of highly radioactive material, plus the basic weight factor, you would only use just the amount of plutonium required to power the craft fully over it's expected lifetime. After that lifetime you no longer have full power due to decay.[[Special:Contributions/172.68.146.20|172.68.146.20]] 05:47, 25 February 2019 (UTC)
 
:Also because of the many restrictions on use of highly radioactive material, plus the basic weight factor, you would only use just the amount of plutonium required to power the craft fully over it's expected lifetime. After that lifetime you no longer have full power due to decay.[[Special:Contributions/172.68.146.20|172.68.146.20]] 05:47, 25 February 2019 (UTC)
::Actually, the half-life of the plutonium has a relatively small effect on the loss of power, the degradation of the thermocouples is a more significant cause of the power loss of RTGs on long term spacecraft missions.  Plutonium loses about 0.79% of the available energy every year due to decay. [[User:TimO|TimO]] ([[User talk:TimO|talk]]) 09:14, 25 February 2019 (UTC)
 
  
 
Could someone perhaps expand on the term "implementing a mechanic"? In New Zealand English at least, a mechanic is a person who works with machines. I thought this was maybe a synonym for "implementing a mechanism", but it seems to have a specific meaning in the team episode writing sense discussed here. [[Special:Contributions/103.22.200.210|103.22.200.210]] 23:41, 24 February 2019 (UTC)
 
Could someone perhaps expand on the term "implementing a mechanic"? In New Zealand English at least, a mechanic is a person who works with machines. I thought this was maybe a synonym for "implementing a mechanism", but it seems to have a specific meaning in the team episode writing sense discussed here. [[Special:Contributions/103.22.200.210|103.22.200.210]] 23:41, 24 February 2019 (UTC)

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