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MSL's Power Source
Guest_exobioquest_*
post Nov 27 2005, 04:46 PM
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Hi, new here.

I'm wondering if any news has come down about finalizing what MSL will run on?

Will it be 2 Boeing's MMRTG (at ~100 watts?) or Lockheed Martin’s SRG (again ~100watts?), have they decided yet? Willl MSL use the RPS to trickle charge a battery or will MSL run on the RPS only? God I hope solar is not a option is anyone pushing for it?
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djellison
post Jul 12 2012, 09:19 PM
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MSL has a battery, just like MER. Don't think of the MMRTG as MSL's power source. Think of it as solar arrays that always see the sunshine. It charges the batteries and then the batteries drive all the stuff on the rover. The battery can be recharged overnight.

Peak consumption is > 110 watts - especially when heating things before driving or using the arm.

Where did you see the 4kw value for the 'X-Ray instrument' ? Only thing I can find suggests that CheMin's XRay source uses about 42 watts.



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jmknapp
post Jul 13 2012, 12:09 AM
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QUOTE (djellison @ Jul 12 2012, 04:19 PM) *
MSL has a battery, just like MER. Don't think of the MMRTG as MSL's power source. Think of it as solar arrays that always see the sunshine. It charges the batteries and then the batteries drive all the stuff on the rover. The battery can be recharged overnight.

Peak consumption is > 110 watts - especially when heating things before driving or using the arm.


I wonder how expensive (in watts) driving works out to be.

QUOTE
Where did you see the 4kw value for the 'X-Ray instrument' ? Only thing I can find suggests that CheMin's XRay source uses about 42 watts.


Check out this video:

http://www.youtube.com/watch?v=F3nJSqc2Uck

At the 25:51 mark he refers to a "40-thousand watt X-ray beam." I did some searching around & I think he just misspoke and meant to say a 40 KeV x-ray beam.


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djellison
post Jul 13 2012, 07:22 AM
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QUOTE (jmknapp @ Jul 12 2012, 05:09 PM) *
I wonder how expensive (in watts) driving works out to be.


Not too bad. The killer is the heating requirement to get the rover ready to drive. That's something on the order of 600 Whrs.


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jmknapp
post Jul 13 2012, 02:43 PM
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QUOTE (djellison @ Jul 13 2012, 03:22 AM) *
Not too bad. The killer is the heating requirement to get the rover ready to drive. That's something on the order of 600 Whrs.


Is that needed to heat up the joints/bearings? So I guess the ~2000 thermal watts from the RTG are not available for that?


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Posts in this topic
- exobioquest   MSL's Power Source   Nov 27 2005, 04:46 PM
- - helvick   QUOTE (exobioquest @ Nov 27 2005, 05:46 PM)Go...   Nov 27 2005, 06:30 PM
|- - exobioquest   QUOTE (helvick @ Nov 27 2005, 12:30 PM)The ME...   Nov 27 2005, 06:53 PM
|- - helvick   QUOTE (exobioquest @ Nov 27 2005, 07:53 PM)Th...   Nov 27 2005, 08:05 PM
|- - exobioquest   Well maybe your right about anti-nuclear nuts, I h...   Nov 27 2005, 08:38 PM
|- - helvick   QUOTE (exobioquest @ Nov 27 2005, 09:38 PM)35...   Nov 27 2005, 09:45 PM
||- - exobioquest   From what I have read SRG has survived several yea...   Nov 27 2005, 10:18 PM
|- - mchan   QUOTE (exobioquest @ Nov 27 2005, 12:38 PM)We...   Nov 29 2005, 05:46 AM
- - DEChengst   I'm quite sure MSL would survive after the bat...   Nov 27 2005, 09:14 PM
|- - exobioquest   Ya, but I don't think 100watts is enough to do...   Nov 27 2005, 09:30 PM
- - mcaplinger   QUOTE (exobioquest @ Nov 27 2005, 08:46 AM)Wi...   Nov 28 2005, 03:59 PM
|- - exobioquest   QUOTE (mcaplinger @ Nov 28 2005, 09:59 AM)Acc...   Nov 28 2005, 04:57 PM
|- - mcaplinger   QUOTE (exobioquest @ Nov 28 2005, 08:57 AM)We...   Nov 28 2005, 05:30 PM
|- - mcaplinger   QUOTE (mcaplinger @ Nov 28 2005, 09:30 AM)How...   Nov 29 2005, 05:22 AM
- - BruceMoomaw   Apparently the Stirling version simply won't b...   Nov 29 2005, 01:18 AM
|- - exobioquest   QUOTE (BruceMoomaw @ Nov 28 2005, 07:18 PM)Ap...   Nov 29 2005, 03:35 AM
- - mike   Gasoline production is a front so the military can...   Nov 29 2005, 04:04 PM
|- - exobioquest   mcaplinger, Its unlikely the mass of the SRG will...   Nov 29 2005, 06:49 PM
|- - mcaplinger   QUOTE (exobioquest @ Nov 29 2005, 10:49 AM)It...   Nov 29 2005, 07:15 PM
||- - exobioquest   mcaplinger, The SRG has 2 55w sterling engines so...   Nov 29 2005, 07:38 PM
||- - mcaplinger   QUOTE (exobioquest @ Nov 29 2005, 11:38 AM)Ma...   Nov 29 2005, 08:24 PM
||- - helvick   QUOTE (mcaplinger @ Nov 29 2005, 09:24 PM)If ...   Nov 29 2005, 08:41 PM
||- - exobioquest   I would be estactic if anything that can provide 2...   Nov 29 2005, 08:57 PM
||- - mcaplinger   QUOTE (exobioquest @ Nov 29 2005, 12:57 PM)At...   Nov 29 2005, 10:00 PM
||- - exobioquest   QUOTE (mcaplinger @ Nov 29 2005, 04:00 PM)Eve...   Nov 29 2005, 10:26 PM
|||- - mcaplinger   QUOTE (exobioquest @ Nov 29 2005, 02:26 PM)An...   Nov 30 2005, 12:34 AM
|||- - Marslauncher   QUOTE (mcaplinger @ Nov 30 2005, 12:34 AM)See...   Nov 30 2005, 12:47 AM
||- - helvick   QUOTE (mcaplinger @ Nov 29 2005, 11:00 PM)and...   Nov 29 2005, 10:30 PM
||- - exobioquest   helvick, Sure there is nothing wrong wit MER spee...   Nov 29 2005, 10:49 PM
||- - helvick   QUOTE (exobioquest @ Nov 29 2005, 11:49 PM)Su...   Nov 29 2005, 11:10 PM
||- - RNeuhaus   QUOTE (helvick @ Nov 29 2005, 06:10 PM)I...   Nov 30 2005, 03:34 AM
||- - exobioquest   What is this: "NASA is considering nuclear en...   Jan 15 2006, 04:57 AM
||- - mcaplinger   QUOTE (exobioquest @ Jan 14 2006, 08:57 PM)So...   Jan 15 2006, 06:12 AM
||- - helvick   QUOTE (mcaplinger @ Jan 15 2006, 07:12 AM)I h...   Jan 15 2006, 09:35 AM
|||- - exobioquest   Well what is the max the MERs gets? what 900-1000w...   Jan 15 2006, 06:06 PM
|||- - helvick   QUOTE (exobioquest @ Jan 15 2006, 07:06 PM)We...   Jan 15 2006, 06:57 PM
|||- - RNeuhaus   QUOTE (helvick @ Jan 15 2006, 01:57 PM)For a ...   Jan 16 2006, 03:14 AM
|||- - helvick   QUOTE (RNeuhaus @ Jan 16 2006, 04:14 AM)Not s...   Jan 16 2006, 03:26 AM
||- - RNeuhaus   QUOTE (mcaplinger @ Jan 15 2006, 01:12 AM)I h...   Jan 16 2006, 03:04 AM
|- - mchan   QUOTE (exobioquest @ Nov 29 2005, 10:49 AM)th...   Nov 30 2005, 02:43 AM
|- - exobioquest   Well if the MMRTG is set I can only hope they can ...   Nov 30 2005, 02:48 AM
- - mike   Personally I don't think any anti-RTG-type pro...   Nov 29 2005, 08:09 PM
- - BruceMoomaw   It's about to be declared the officially, firm...   Nov 30 2005, 02:29 AM
- - djellison   Yes - it's clearly just being 'polite...   Jan 15 2006, 09:09 AM
- - Analyst   Mike Griffin said at the NH press conference MSL w...   Jan 18 2006, 10:06 AM
- - pospa   DoE's Idaho National Laboratory (MMRTG supplie...   Nov 23 2011, 12:20 PM
- - monty python   Thanks pospa. I learned a lot from that.   Nov 24 2011, 10:52 AM
- - jmknapp   I saw a presentation on YouTube where it was state...   Jul 12 2012, 08:05 PM
- - djellison   MSL has a battery, just like MER. Don't thin...   Jul 12 2012, 09:19 PM
|- - jmknapp   QUOTE (djellison @ Jul 12 2012, 04:19 PM)...   Jul 13 2012, 12:09 AM
|- - djellison   QUOTE (jmknapp @ Jul 12 2012, 05:09 PM) I...   Jul 13 2012, 07:22 AM
|- - jmknapp   QUOTE (djellison @ Jul 13 2012, 03:22 AM)...   Jul 13 2012, 02:43 PM
||- - mcaplinger   QUOTE (jmknapp @ Jul 13 2012, 07:43 AM) I...   Jul 13 2012, 04:12 PM
|- - RoverDriver   QUOTE (djellison @ Jul 13 2012, 12:22 AM)...   Jul 13 2012, 09:34 PM
- - nprev   What fluid is used in the loop, Mike? An ammonia s...   Jul 13 2012, 09:26 PM
|- - mcaplinger   QUOTE (nprev @ Jul 13 2012, 02:26 PM) Wha...   Jul 13 2012, 10:02 PM
- - nprev   Ah. Thanks!   Jul 13 2012, 10:44 PM
- - MarsEngineer   The cooling loop (heat rejection subsystem or HRS)...   Jul 14 2012, 06:06 PM


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