[X] My Assistant

[akuo]

Oppy looks like to be stuck in a dune once more!

The front wheels (rover was moving backwards into the dune) look to be closer to solid surface than during the purgatory incident, so hopefully they can back out pretty quickly.

I know this is already being discussed in the other thread, but I think this way the incident is clearer to a casual reader of the forum. Threads of nearly 1000 posts clog the discussion anyway.

http://qt.exploratorium.edu/mars/opportuni...GBP1151R0M1.JPG

http://qt.exploratorium.edu/mars/opportuni...GBP1311R0M1.JPG

inline images changed to links. 2048 x 1024 of images clogs discussions as well - Doug

[Tesheiner]

> It seams to me that rear weels didn't get stucked, do you agree on this?

This is an "enhanced rhaz" image; if the wheels are stucked or not is something we'll know once they put the reverse.



> Anyway, are the measurements you show been taken on front weels, all weels?

All wheels I would say.

> Just wondering what's the logic Oppy's got when she feels she's gona be stucked : stop all weels and wait or what else?

Afaik, there is no "felling I'm gonna be stucked" but something like:
- Take a navcam image
- Command an X meters drive (X may be 5, 10, or some meters)
- Take a navcam image and calculate the actual driven distance
- If slippage (actual distance / planned distance) is greater then <param> abort drive, otherwise repeat next cicle.

We also had pictures of the same sol from Pancam and Navcam. Do you know if Oppy's programmed to shot this kind of pictures even she detect a "big" slipage problem or if the pictures have been taken before been stucked in this case?

Those pics are post-drive images, taken once the rover finished the drive normally or not.

But the terrain here looked so easy, I wouldn't be suprised if they blind-drived it for 25m. Just bad luck really.

This is a partial pancam mosaic taken on sol 828, two moves before the current position, in which I encircled the current location. It really looks easy, doesn't it?
Except for a "fluffy" texture, I wouldn't say anything against going through this path.