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Digging in |
 Apr 25 2006, 03:36 PM
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 Junior Member  Group: Members Posts: 90 Joined: 20-April 05 Member No.: 289  |
An interesting update at Newscientist.
Seems they are planning on using Spirit's RAT to dig down into the dirt, cm by cm. I wonder how deep they can go? Maybe we'll find out if there is anything frozen/liquid just below the surface. Link |
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Apr 26 2006, 08:55 AM
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 Junior Member Group: Members Posts: 42 Joined: 31-March 05 From: Sofia, Bulgaria Member No.: 224 |
Well, ignoring the dust buildup and battery recharge capacity, about 7 months from now (or 200 sols, if my math is correct) the solar exposure will be around tosol levels with lowest on august 6th
Another OT: in Starry Night Pro a martian day of 24.656944 hours works much better than the wikipedia value of 24.622962
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Apr 26 2006, 02:35 PM
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 Dublin Correspondent Group: Admin Posts: 1799 Joined: 28-March 05 From: Celbridge, Ireland Member No.: 220 |
QUOTE (Vladimorka @ Apr 26 2006, 08:55 AM)  Well, ignoring the dust buildup and battery recharge capacity, about 7 months from now (or 200 sols, if my math is correct) the solar exposure will be around tosol levels with lowest on august 6th Another OT: in Starry Night Pro a martian day of 24.656944 hours works much better than the wikipedia value of 24.622962 By my calculations the lowest insolation level at Spirits latitude occurs on July 27th when you take eccentricity and obliquity into account and disregard the atmosphere. The insolation on that day is 2770 whr/m^2. Today it's 3200 whr/m^2 and will be back at that level on October 21. Obviously the Solar Panels' power generation capacity also depends on accumulated dust and atmospheric opacity though and my best guess for that at the moment is that the minimum power generation level for Spirit will be on September 8th assuming dust deposition remains constant. After that the rate at which Insolation rises increases faster than losses due to dust for a while but the amount of dust is very problematic now and without a cleaning event Spirit's ability to generate power will not rise above 276 whr per sol again when horizontal. The Wikipedia value is the Martian Siderial day, your better value for Starry Night is closer to the Solar day (24.65979 earth hours). |
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maycm Digging in Apr 25 2006, 03:36 PM
djellison Only difference between this and the trenching ( t... Apr 25 2006, 04:13 PM
Bob Shaw QUOTE (djellison @ Apr 25 2006, 05:13 PM)... Apr 25 2006, 08:07 PM RNeuhaus I realized that this kind of digging would cause m... Apr 25 2006, 06:49 PM Bob Shaw Rodolfo:
Stirring the sand/dust should produce mu... Apr 25 2006, 08:23 PM Ant103 Dust may not cause problem. The high of solar pane... Apr 25 2006, 07:11 PM djellison They've not said they're going to physical... Apr 25 2006, 08:04 PM RNeuhaus I agree that it is more sensate to use the IDD as ... Apr 25 2006, 08:34 PM Shaka http://marsrovers.jpl.nasa.gov/gallery/pre.../2006... Apr 25 2006, 11:02 PM sattrackpro QUOTE (Shaka @ Apr 25 2006, 04:02 PM) App... Apr 26 2006, 01:14 AM Shaka I would have expected the same sort of plan - to c... Apr 26 2006, 01:40 AM general http://marsrovers.jpl.nasa.gov/gallery/pre.../2006... Apr 26 2006, 06:45 AM edstrick I *PRESUME* they've been playing in the sand b... Apr 26 2006, 07:02 AM dilo Perhaps slightly OT, but in the newscientist artic... Apr 26 2006, 08:08 AM dilo Thanks, Vladimorka... so we will have to wait fo a... Apr 26 2006, 09:03 AM edstrick 4 pics of the area directly in front of Spirit. R... Apr 26 2006, 10:46 AM Joffan The thing I like most, regarding all this discussi... Apr 26 2006, 10:38 PM Jeff7 QUOTE So this is planning what to do in maybe 9 mo... Apr 27 2006, 01:42 AM Shaka Like losing family.
Once more into the breac... Apr 27 2006, 02:02 AM RNeuhaus During the winter, Spirit will be almost hibernate... Apr 27 2006, 02:31 AM |
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