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Unmanned Spaceflight.com > Mars & Missions > MER > Spirit
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ustrax
QUOTE (Tesheiner @ Jun 26 2009, 12:29 PM) *
That's from sol 1943. smile.gif


Is that for real?! blink.gif
smile.gif
ElkGroveDan
QUOTE (Shaka @ Jun 26 2009, 02:47 PM) *
Seriously though, how many more watt-hours do we need to prove cold fusion?
cool.gif

Maybe a creative EE could figure out a way to sacrifice one of the IDD instruments and create a welder with all that power. Then it's just a matter of cutting off the bad wheel.
MahFL
945.....are they serious ?
Norm Hartnett
There are some nice shots of Paolo in the video on the left side of the Free Spirit site. rolleyes.gif

Unfortunately in the lead photo all we see of him is his back. ph34r.gif

The logo isn't available on a T-shirt yet that I've been able to find

briv1016
QUOTE (Norm Hartnett @ Jun 27 2009, 10:39 AM) *
There are some nice shots of Paolo in the video on the left side of the Free Spirit site. rolleyes.gif

Unfortunately in the lead photo all we see of him is his back. ph34r.gif

The logo isn't available on a T-shirt yet that I've been able to find



http://shop.cafepress.com/spirit-rover
PhilCo126
Judging the photos in Spirit's Underbelly topic, I believe Oppy's wheels never sank that deep in Martian soil
wheel.gif correct?
Burmese
945 wh

I'm just waiting for them to start using the RAT brush to start clearing sand around the wheels...
ilbasso
QUOTE (ElkGroveDan @ Jun 26 2009, 09:06 PM) *
Maybe a creative EE could figure out a way to sacrifice one of the IDD instruments and create a welder with all that power. Then it's just a matter of cutting off the bad wheel.


Maybe focus the sun's rays through the MI and fuse the sand.
RoverDriver
We are 3/4 done filling the testing rig. More than 4000lb of soil simulant mixed and set in the testing rig. There is video on the MER JPL page. Hopefully we will have the testing rig filled and properly set by EOD on Monday and wheel.gif the testbed rover on Tuesday.

While I appreciate the change of pace (no computer for two days!) I realized that if I had to earn my bread doing manual labor, I would not survive more than a couple of weeks :-(
nprev
QUOTE (RoverDriver @ Jun 27 2009, 07:34 PM) *
While I appreciate the change of pace (no computer for two days!) I realized that if I had to earn my bread doing manual labor, I would not survive more than a couple of weeks :-(


I'm with you there, man, at least as far as shoveling stuff. If you've got a heating pad, suggest getting it on your lower back ASAP!
Shaka
Paolo, throw it in reverse, and gun it.

cool.gif
RoverDriver
QUOTE (Shaka @ Jun 27 2009, 08:40 PM) *
Paolo, throw it in reverse, and gun it.

cool.gif


Question: how do you "gun" a vehicle that moves at a speed that is 100s of times slower than a 2CV?

Paolo
BrianL
Also, which way do you mean by reverse? Spirit travels normally in reverse, so does throwing it in reverse mean go forward, which is really backward, or go backward, which is forward? Things would have been so much simpler had a rear wheel broken. wink.gif
RoverDriver
QUOTE (BrianL @ Jun 28 2009, 08:23 AM) *
...
Things would have been so much simpler had a rear wheel broken. wink.gif


Actually I am grateful that it is the RF wheel that is broken. From my testing in the sandbox, if you had to lose one wheel either the LF or the RF are less problematic. Any other combination can cause the bogie to lift one of the active wheels and therefore lose more traction. Suppose you lose the RM while all other wheels are working, when you drive forward, it would be likely that the RR wheel would come up now you have only one active wheel on the right side. If you lost the RR, when you are driving backwards you would lift the RM. With the loss of the RF you can drive backwards or forwards and "wheelies" are only a rare occurrence.

Paolo
PhilCo126
What a title mad.gif Not space junk yet
http://www.physorg.com/news165402360.html
vikingmars
QUOTE (PhilCo126 @ Jun 29 2009, 09:47 AM) *
What a title mad.gif Not space junk yet
http://www.physorg.com/news165402360.html

... And in the worst case in which Spirit cannot move any more and thus is becoming a stationary rover, it will do a much better science with its advanced optics and camera than the Viking landers ! smile.gif
We will be inventive and use Spirit to monitor Mars during long periods (providing we have a minimum budget). For example, just imagine making a 24hrs panoramic movie with the navcams showing moving shadows during the day and even moving stars and satellites at night in the Martian Sky ! "A Day on Mars" movie !!! rolleyes.gif
MahFL
Slabs of space junk indeed. That reporter needs a rocket up his behind.......

wheel.gif wheel.gif wheel.gif
cbcnasa
QUOTE (PhilCo126 @ Jun 29 2009, 02:47 AM) *
What a title mad.gif Not space junk yet
http://www.physorg.com/news165402360.html

I would like the reporter to define "space junk"
Poolio
Just a writer taking creative liberties. The article is really not so negative. The "space junk" reference isn't so much a dig as a metaphor to underscore the mission's longevity and success.

BTW, is anyone else irritated by the constant reiteration that Endeavor is "twenty times larger than Victoria"? That really understates the difference in scale. Craters are not one-dimensional; you can't use a linear basis for comparison. They should be using the areas (about 300x larger) or volumes (about 1200x) for comparison. I think your average person (myself included) would find the 300x figure to be the most visually intuitive.
RoverDriver
QUOTE (cbcnasa @ Jun 29 2009, 07:50 AM) *
I would like the reporter to define "space junk"


That's easy: any area on the screen or on printed paper (space) containing inane words (junk).

Paolo
lyford
QUOTE (RoverDriver @ Jun 28 2009, 07:21 PM) *
Any other combination can cause the bogie to lift one of the active wheels and therefore lose more traction.

This is the first time I have heard of any weakness in the rocker bogie system.... interesting.
centsworth_II
QUOTE (MahFL @ Jun 29 2009, 08:42 AM) *
That reporter needs a rocket up his behind.......

Normally reporters, and even columnists, don't have control over the headline.
RoverDriver
QUOTE (lyford @ Jun 29 2009, 09:09 AM) *
This is the first time I have heard of any weakness in the rocker bogie system.... interesting.


But it is a graceful degradation. Any system when brought outside the design parameters will break down. The fact we can still drive Spirit is testimony that the R/B system is quite good!

Paolo
RoverDriver
I also wanted to let you know that today at around 4:40pm we mixed and leid down the last batch of clay/diatomaceous earth mix for a grand total of 5400lbs. Tomorrow morning, while media will be watching, we will roll down the rover in the sandbox. Hopefully this is the right mix and the rover will not simply be swallowed by the sandbox ;-)

Paolo
briv1016
QUOTE (RoverDriver @ Jun 30 2009, 01:41 AM) *
Tomorrow morning, while media will be watching, we will roll down the rover in the sandbox. Hopefully this is the right mix and the rover will not simply be swallowed by the sandbox ;-)

Paolo



That takes guts doing it in front of the media. Remember what happened to Geraldo Rivera. wink.gif
BrianL
The difference being, Paolo's expected result is based on science, not fantasy.
MahFL
What happened to Geraldo ?
RoverDriver
QUOTE (briv1016 @ Jun 29 2009, 10:01 PM) *
That takes guts doing it in front of the media. Remember what happened to Geraldo Rivera. wink.gif


What happened? I think I'v heard of him, but I'm not sure what you are referring to.

Paolo
MahFL
Is that the Sun in this picture ?

Sun ?
dvandorn
Back in the late '70s or early '80s, Geraldo Rivera pushed this major network special, "The Secret of Al Capone's Vaults," during which these supposed hidey-holes once used by mobster Al Capone were opened up on live television. There was absolutely nothing in the "vaults," and ever since Rivera has been held up as the textbook example of all-hype, no-substance television programming.

-the other Doug
fredk
QUOTE (MahFL @ Jun 30 2009, 02:07 PM) *
Is that the Sun in this picture ?

That frame was taken at 19:49 local solar time, when the Sun was almost 18 degrees below the horizon, according to this filename decoder.
Also, although the shape of that blob is pretty convincingly Sun-shaped, the Sun would appear larger than that with navcam.
MahFL
I thought it did look a little small.
Thanks.

BTW I saw the smoke contrail from the Delta that launched GEOS O on Saturday as we drove to UNF.
jamescanvin
Yes, it is too small for the Sun, however it is about the right size for Phobos...

Hmmm, anyone want to check where it would have been at the time?
ugordan
Isn't it a little too bright for Phobos? If solar glow below the horizon peaks quite a distance above that, wouldn't atmospheric extinction be too strong at that low an elevation? Also, since Phobos would be in the general direction of the Sun, it would be at a thin crescent phase, pretty dim by itself.
ustrax
<special cookie alert>

When you got too much time and a delirious mind what do you do? Silly things...

I found myself thinking waaay outside the box (no pun intended...), and went to read the passage on how Ulysses was able to leave Calypso's island where he was imprisioned after returning from Troy on its way to Ithaca.

I am not expecting a rover to build a wood raft but since we're putting Spirit in the Odyssey's scenario it doesn't hurt to take a look and, this is my intention, to see if any line there could cause a spark in someone's mind.
There must be something in here...among this axe sharpened on both sides, an adze, augers, squaring by rule, levers... smile.gif

Trying to convert Homer's writing to XXI century engineering...what a crazy challenge! My kind!...Think like a child! smile.gif

Here's the text...:
When the child of morning rosy-fingered Dawn appeared, Ulysses put on his shirt and cloak, while the goddess wore a dress of a light gossamer fabric, very fine and graceful, with a beautiful golden girdle about her waist and a veil to cover her head. She at once set herself to think how she could speed Ulysses on his way. So she gave him a great bronze axe that suited his hands; it was sharpened on both sides, and had a beautiful olive-wood handle fitted firmly on to it. She also gave him a sharp adze, and then led the way to the far end of the island where the largest trees grew--alder, poplar and pine, that reached the sky--very dry and well seasoned, so as to sail light for him in the water. Then, when she had shown him where the best trees grew, Calypso went home, leaving him to cut them, which he soon finished doing. He cut down twenty trees in all and adzed them smooth, squaring them by rule in good workmanlike fashion. Meanwhile Calypso came back with some augers, so he bored holes with them and fitted the timbers together with bolts and rivets. He made the raft as broad as a skilled shipwright makes the beam of a large vessel, and he fixed a deck on top of the ribs, and ran a gunwale all round it. He also made a mast with a yard arm, and a rudder to steer with. He fenced the raft all round with wicker hurdles as a protection against the waves, and then he threw on a quantity of wood. By and by Calypso brought him some linen to make the sails, and he made these too, excellently, making them fast with braces and sheets. Last of all, with the help of levers, he drew the raft down into the water.

In four days he had completed the whole work, and on the fifth Calypso sent him from the island after washing him and giving him some clean clothes. She gave him a goat skin full of black wine, and another larger one of water; she also gave him a wallet full of provisions, and found him in much good meat. Moreover, she made the wind fair and warm for him, and gladly did Ulysses spread his sail before it, while he sat and guided the raft skilfully by means of the rudder. He never closed his eyes, but kept them fixed on the Pleiads, on late-setting Bootes, and on the Bear--which men also call the wain, and which turns round and round where it is, facing Orion, and alone never dipping into the stream of Oceanus--for Calypso had told him to keep this to his left. Days seven and ten did he sail over the sea, and on the eighteenth the dim outlines of the mountains on the nearest part of the Phaeacian coast appeared, rising like a shield on the horizon.
MahFL
Awesome.
jamescanvin
I agree ugordan, after I posted that I began to worry that it was too bright and that it should have been a crescent.
SFJCody
Lots of info in this interview


QUOTE
She has more power now than she has in almost 4 years.
smile.gif


QUOTE
nobody doubts that we'll get out and get back on the road.
smile.gif wheel.gif wheel.gif wheel.gif
RoverDriver
Well, I don't know how to tell you guys, but we have one more rover stuck in sand. This morning we rolled the testbed rover in the sandbox and partly embedded it in the soil simulant. We attempted some small motions to verify that the rover s not moving when operated with 5 wheels. Tomorrow we will be setting the rover for extrication testing.

Paolo
nprev
In this case- Yay! Good news!!! smile.gif
Stu
Paolo, does the testbed rover have a name? Come on, own up, you must have a nickname for it... wink.gif

We need to know so we can start a "Free XXX, the rover that's helping to free Spirit!" webpage, and make t-shirts...! tongue.gif
RoverDriver
QUOTE (Stu @ Jun 30 2009, 03:14 PM) *
Paolo, does the testbed rover have a name? Come on, own up, you must have a nickname for it... wink.gif

We need to know so we can start a "Free XXX, the rover that's helping to free Spirit!" webpage, and make t-shirts...! tongue.gif


It does not have a cool name. Its official name is SSTB1 (Surface System TestBed 1). We did not have a naming contest for this one. The t-shirt *I* want is "Freed Spirit" but I am settling for a "Freeing Spirit".

Paolo
Stu
... in that case I respectfully propose we christen the testbed droid - sorry, rover - "TeeBee"! smile.gif
Astro0
OK, I'll do it laugh.gif
Click to view attachment
BrianL
Tee-hee. biggrin.gif
nprev
laugh.gif ...And, just like that, an automated star is born!
RoverDriver
QUOTE (Astro0 @ Jun 30 2009, 04:49 PM) *
OK, I'll do it laugh.gif


This is awesome. Scott and I are still laughing!

Paolo
fredk
QUOTE (RoverDriver @ Jun 30 2009, 11:22 PM) *
Well, I don't know how to tell you guys, but we have one more rover stuck in sand.
Congratulations! wink.gif biggrin.gif
Stu
Wow... now I know how Viktor Frankenstein felt when Igor threw that switch, and crackling lightning and the smell of ozone filled the lab under the castle... I've created a MONSTER!!! laugh.gif

Knew you'd come up with something brilliant Astro0!

TeeBee it is then! biggrin.gif
djellison
http://www.jpl.nasa.gov/images/mer/2009063...g_in_090630.jpg

I noticed the mylar / something else material from in between the wheels peeling off ohmy.gif

I wonder how the real one's on Mars are doing.

D
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