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MSL's Power Source |
| Guest_exobioquest_* |
  Nov 27 2005, 04:46 PM
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#1
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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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Jul 12 2012, 09:19 PM
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#2
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Founder  Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
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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Jul 13 2012, 12:09 AM
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#3
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 Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
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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Jul 13 2012, 07:22 AM
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#4
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Founder Group: Chairman Posts: 14457 Joined: 8-February 04 Member No.: 1 |
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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Jul 13 2012, 02:43 PM
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#5
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Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
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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Jul 13 2012, 04:12 PM
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#6
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Senior Member Group: Members Posts: 2559 Joined: 13-September 05 Member No.: 497 |
QUOTE (jmknapp @ Jul 13 2012, 07:43 AM) Is that needed to heat up the joints/bearings? So I guess the ~2000 thermal watts from the RTG are not available for that? The fluid loop that's warmed by the RTG only goes inside the rover body; the actuators and other extremities have to be heated electrically. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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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 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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