To the Cape!, Quackmire and arm troubles |
To the Cape!, Quackmire and arm troubles |
Mar 31 2008, 12:16 PM
Post
#1
|
|
Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
"Hey folks! I’m on-duty with Opportunity this week and it’s going to be pretty exciting. We are in the process of driving the rover over to the wall of Cape Verde to study the layers of rocks there in much greater detail. I will be posting updates all week with the spectacular new pictures that we should be receiving. Stay tuned, it’s going to be a pretty cool week!"
Thanks for the update Ryan : http://martianchronicles.wordpress.com/200...ng-to-the-cape/ I wonder how close they'll get. I think no closer than the height projected from it's base ( i.e. 45 degrees ) |
|
|
Apr 21 2008, 04:29 PM
Post
#2
|
|
Senior Member Group: Members Posts: 4247 Joined: 17-January 05 Member No.: 152 |
New Oppy updates up to sol 1497. Unfortunately nothing about the current predicament other than the phrase "Driving on Mars Is Hard".
Some insight into the initial toe-dip on sol 1489, though: QUOTE Electrical currents indicated that despite relatively deep sand on both sides, the wheels had good purchase. The sand was 4 centimeters (1.5 inches) deep on the left and 6 to 8 centimeters (2 to 3 inches) deep on the right. The tilt of the rover indicated that the left wheel encountered rock quickly, experiencing large vibrations after a short, smooth period. The right wheel got into deep sand after only brief contact with rock. Wheel slip and bogie (wheel suspension) angles indicated the rover moved backward about 3 centimeters (1 inch) during the scuffing. Rover planners concluded that the terrain was drivable but required caution.
|
|
|
Apr 22 2008, 04:17 PM
Post
#3
|
|
Senior Member Group: Moderator Posts: 4279 Joined: 19-April 05 From: .br at .es Member No.: 253 |
New Oppy updates up to sol 1497. Unfortunately nothing about the current predicament other than the phrase "Driving on Mars Is Hard". I said to myself --At last!-- when I saw that title on the MER webpage, just to realize after clicking on the link it was referring to "old news". Some tidbits on that week's report are IMHO not 100% correct: Sol 1493: Opportunity monitored dust on the panoramic-camera mast assembly, stowed the robotic arm, and continued driving toward Cape Verde. That sol was the first attempt to move backwards. Sol 1495: Opportunity took spot images of the sky for calibration purposes with the panoramic camera, stowed the robotic arm, and drove toward Cape Verde. Second attempt to exit the trap. Sol 1496: Opportunity stowed the robotic arm and drove backward onto bedrock to extract its wheels from the sand before proceeding toward Cape Verde. Another failed attempt. I'm looking forward the monthly report at TPS too! |
|
|
Apr 22 2008, 05:22 PM
Post
#4
|
|
Senior Member Group: Members Posts: 4247 Joined: 17-January 05 Member No.: 152 |
I've seen the same thing before: reports of a drive towards a target when they actually drive away from it. In each case, though, the backwards drives were intended to be just short, temporary moves before continuing towards the main target. Maybe the update writers consider even the short backwards drives after the toe dip as part of the overall plan of a drive towards the target. It's certainly not clearly written if that's what they meant.
|
|
|
Lo-Fi Version | Time is now: 2nd June 2024 - 12:24 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |