IPB
X   Site Message
(Message will auto close in 2 seconds)

Welcome Guest ( Log In | Register )

Dust Storm- Opportunity EOM, the end of the beginning of a new era in robotic spaceflight
djellison
post Jun 5 2018, 03:05 PM
Post #1


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1
Expect a quiet few sols - http://www.lpl.arizona.edu/~lemmon/mars-tau-b.html
SOL TAU
5097 0.65
5098 0.64
5099 0.67
5100 0.64
5101 0.60
5102 0.60
5103 0.61
5104 1.55
5105 ****
5106 2.12
Go to the top of the page
 
+Quote Post
 
 Start new topic
Replies
djellison
post Jun 10 2018, 10:38 PM
Post #2


Founder
****

Group: Chairman
Posts: 14457
Joined: 8-February 04
Member No.: 1
The sort of slope that represents a threat to vehicle safety can cause some kinds of coarse dust, bordering on sand, to rattle down the rover deck.

This is all academic - we don't know how long this storm will last, nor what state the vehicle will be in when it ends. We may find we come out of it with hundreds of watt hour to burn.

Remember - dust on the arrays is not the problem right now. It's dust in the atmosphere. A brand new rover with clean arrays would also be in trouble right now. We went into this with a pretty clean rover. A dust factor of 0.772 ( see https://mars.jpl.nasa.gov/mer/mission/statu...tml#opportunity ) is remarkably clean.
Go to the top of the page
 
+Quote Post

Posts in this topic
- djellison   Dust Storm- Opportunity EOM   Jun 5 2018, 03:05 PM
- - nprev   Breaking news: As Mars nears one of its closest pe...   Jun 9 2018, 06:38 AM
- - Sean   Oh god.   Jun 9 2018, 11:17 AM
- - fredk   Some details of the storm activity at the MRO MARC...   Jun 9 2018, 02:17 PM
- - James Sorenson   Good luck to Opportunity and to the very talented ...   Jun 9 2018, 06:44 PM
- - Explorer1   Given the length of the mission, it was only a mat...   Jun 9 2018, 07:18 PM
- - marsophile   Once the dust storm per se abates, there may be a ...   Jun 10 2018, 12:46 AM
- - Phil Stooke   "I wonder if there might be some advantage at...   Jun 10 2018, 08:21 PM
- - djellison   When you have skies this dusty - the single best s...   Jun 10 2018, 09:03 PM
- - centsworth_II   Also, with panels flat, a gust of wind from any d...   Jun 10 2018, 09:21 PM
- - djellison   Moreover - it's not dust 'fall' that h...   Jun 10 2018, 09:34 PM
|- - Dalhousie   QUOTE (djellison @ Jun 10 2018, 09:34 PM)...   Jun 10 2018, 11:01 PM
|- - djellison   QUOTE (Dalhousie @ Jun 10 2018, 04:01 PM)...   Jun 11 2018, 12:43 AM
- - pioneer   Will Opportunity get a chance to send back images ...   Jun 10 2018, 10:07 PM
- - djellison   Other than taking occasional tau measurements of t...   Jun 10 2018, 10:13 PM
- - ngunn   I wonder how much tilt you need to shake some dust...   Jun 10 2018, 10:29 PM
- - djellison   The sort of slope that represents a threat to vehi...   Jun 10 2018, 10:38 PM
- - ngunn   Sure, my question was not about managing the situa...   Jun 10 2018, 11:11 PM
|- - djellison   QUOTE (ngunn @ Jun 10 2018, 03:11 PM) If ...   Jun 11 2018, 12:30 AM
|- - RoverDriver   QUOTE (ngunn @ Jun 10 2018, 04:11 PM) ......   Jun 13 2018, 04:21 PM
- - marsophile   Is it still true that the prevailing wind is upslo...   Jun 10 2018, 11:38 PM
- - pioneer   Thanks. I thought I saw an image taken by one of ...   Jun 11 2018, 12:55 AM
- - James Sorenson   Oppy as well as Spirit did take some images of the...   Jun 11 2018, 01:15 AM
- - serpens   Yep. Spirit provided a sequence of images that p...   Jun 11 2018, 03:49 AM
- - djellison   This mosaic is from Opportunity https://www.nasa.g...   Jun 11 2018, 04:23 AM
|- - serpens   QUOTE (djellison @ Jun 11 2018, 04:23 AM)...   Jun 11 2018, 12:15 PM
- - James Sorenson   I am curious if the full frame wide range tau imag...   Jun 11 2018, 04:36 AM
- - Deimos   Hoping to see some new values added to that site s...   Jun 11 2018, 11:49 AM
- - Deimos   I suppose since the news is here, it is on the plo...   Jun 11 2018, 07:32 PM
|- - fredk   QUOTE (Deimos @ Jun 11 2018, 08:32 PM) A ...   Jun 11 2018, 07:47 PM
|- - MoreInput   I just can't believe how fast the tau increase...   Jun 11 2018, 07:49 PM
- - mcaplinger   Has Opportunity ever been in a low-power fault sta...   Jun 11 2018, 09:52 PM
- - serpens   I guess Opportunity would be better placed to come...   Jun 11 2018, 11:28 PM
|- - mcaplinger   QUOTE (serpens @ Jun 11 2018, 03:28 PM) I...   Jun 12 2018, 05:47 AM
- - marsophile   https://mars.nasa.gov/mer/newsroom/pressrel.../200...   Jun 12 2018, 12:33 AM
- - Hungry4info   It's apparently not as bad over Curiosity...   Jun 12 2018, 04:11 AM
|- - MahFL   QUOTE (Hungry4info @ Jun 12 2018, 04:11 A...   Jun 12 2018, 10:39 PM
- - PaulH51   NASA will host a media teleconference at 10:30 a.m...   Jun 12 2018, 09:36 PM
|- - HSchirmer   QUOTE (PaulH51 @ Jun 12 2018, 10:36 PM) N...   Jun 12 2018, 10:09 PM
- - xflare   Has there been any further communication from Oppo...   Jun 12 2018, 11:32 PM
|- - mcaplinger   QUOTE (xflare @ Jun 12 2018, 03:32 PM) Ha...   Jun 13 2018, 12:50 AM
- - RoverDriver   There will be a telecon tomorrow (Wednesday June 1...   Jun 13 2018, 12:46 AM
- - jccwrt   The JPL news story on the dust storm was updated t...   Jun 13 2018, 03:05 AM
|- - mcaplinger   QUOTE (jccwrt @ Jun 12 2018, 07:05 PM) th...   Jun 13 2018, 03:45 AM
- - serpens   Thanks for that link. I guess all that can be don...   Jun 13 2018, 04:15 AM
- - SpaceListener   Are the solar panels able to raise up? I say this ...   Jun 13 2018, 04:31 PM
|- - MahFL   QUOTE (SpaceListener @ Jun 13 2018, 05:31...   Jun 13 2018, 10:48 PM
- - Explorer1   No, those were a one-time use, though good thinki...   Jun 13 2018, 04:35 PM
- - djellison   People should think of their TV screen. It has d...   Jun 13 2018, 05:52 PM
- - Art Martin   The news conference was upbeat. They expect the r...   Jun 13 2018, 06:22 PM
- - mcaplinger   The good news from the press conference is that th...   Jun 13 2018, 11:24 PM
|- - marsophile   QUOTE (mcaplinger @ Jun 13 2018, 03:24 PM...   Jun 14 2018, 03:17 AM
- - PaulH51   ICYMI : Here is a link to the YouTube recording of...   Jun 14 2018, 12:35 AM
- - serpens   The extent of this dust storm seems to be emulatin...   Jun 14 2018, 02:13 AM
- - jccwrt   Another potential alternative is the 1977 dust sto...   Jun 14 2018, 02:55 AM
- - elakdawalla   Because a lot of questions being asked here were a...   Jun 14 2018, 03:27 AM
|- - mcaplinger   QUOTE (elakdawalla @ Jun 13 2018, 07:27 P...   Jun 14 2018, 04:09 AM
|- - elakdawalla   QUOTE (mcaplinger @ Jun 13 2018, 09:09 PM...   Jun 14 2018, 04:36 PM
- - Explorer1   The main thought I keeping coming back to is that ...   Jun 14 2018, 04:33 AM
|- - mcaplinger   QUOTE (Explorer1 @ Jun 13 2018, 08:33 PM)...   Jun 14 2018, 03:11 PM
|- - Gerald   QUOTE (mcaplinger @ Jun 14 2018, 05:11 PM...   Jun 14 2018, 05:30 PM
- - mcaplinger   https://trs.jpl.nasa.gov/handle/2014/43244 "T...   Jun 14 2018, 03:05 PM
- - Deimos   Not strictly true, at least if you're referrin...   Jun 14 2018, 05:59 PM
- - marsophile   New MARCI weather report: http://www.msss.com/mss...   Jun 14 2018, 08:02 PM
- - Steve G   To add a layman's context to the amount of sun...   Jun 15 2018, 03:19 AM
- - serpens   There are a lot of variables to consider there Ste...   Jun 15 2018, 06:38 AM
- - Don1   OK, so according to the source linked below, a sun...   Jun 15 2018, 09:02 AM
- - Gerald   If I understand it correctly, tau measurements are...   Jun 15 2018, 12:03 PM
- - Deimos   Exactly! The Sun itself was fainter than a ful...   Jun 15 2018, 01:46 PM
|- - mcaplinger   QUOTE (Deimos @ Jun 15 2018, 05:46 AM) So...   Jun 15 2018, 02:26 PM
|- - fredk   QUOTE (Deimos @ Jun 15 2018, 02:46 PM) Th...   Jun 15 2018, 04:37 PM
- - hendric   On the 22 WH just to keep the clock alive, maybe t...   Jun 15 2018, 07:19 PM
|- - mcaplinger   QUOTE (hendric @ Jun 15 2018, 11:19 AM) O...   Jun 15 2018, 10:26 PM
||- - hendric   QUOTE (mcaplinger @ Jun 15 2018, 05:26 PM...   Jun 17 2018, 02:31 PM
||- - mcaplinger   QUOTE (hendric @ Jun 17 2018, 06:31 AM) w...   Jun 17 2018, 03:36 PM
|- - marsophile   QUOTE (hendric @ Jun 15 2018, 11:19 AM) O...   Jun 16 2018, 02:58 AM
|- - mcaplinger   QUOTE (marsophile @ Jun 15 2018, 06:58 PM...   Jun 16 2018, 04:01 PM
- - Roby72   just as a reminder how Mars looked in 2001 fully i...   Jun 15 2018, 09:56 PM
- - siravan   Regarding tau and the efficiency of solar panels, ...   Jun 15 2018, 10:10 PM
- - serpens   As siravan noted the spectrum at the surface would...   Jun 16 2018, 01:13 AM
|- - Deimos   QUOTE (serpens @ Jun 16 2018, 01:13 AM) T...   Jun 16 2018, 01:30 PM
|- - fredk   QUOTE (Deimos @ Jun 16 2018, 02:30 PM) If...   Jun 16 2018, 11:30 PM
- - Don1   I did try to estimate the illumination based on th...   Jun 16 2018, 09:20 PM
|- - mcaplinger   QUOTE (Don1 @ Jun 16 2018, 01:20 PM) What...   Jun 16 2018, 11:38 PM
|- - MahFL   QUOTE (mcaplinger @ Jun 16 2018, 11:38 PM...   Jun 17 2018, 08:44 AM
|- - mcaplinger   QUOTE (MahFL @ Jun 17 2018, 12:44 AM) The...   Jun 17 2018, 02:21 PM
- - Don1   QUOTE (mcaplinger @ Jun 16 2018, 04:38 PM...   Jun 17 2018, 09:05 AM
- - serpens   While the GaInP top cell is the limiting (short ci...   Jun 17 2018, 12:48 PM
- - fredk   I guess the question is: how does the rover decide...   Jun 17 2018, 02:34 PM
|- - mcaplinger   QUOTE (fredk @ Jun 17 2018, 06:34 AM) Mor...   Jun 17 2018, 03:41 PM
||- - marsophile   QUOTE (mcaplinger @ Jun 17 2018, 07:41 AM...   Jun 17 2018, 06:57 PM
||- - mcaplinger   QUOTE (marsophile @ Jun 17 2018, 10:57 AM...   Jun 18 2018, 12:11 AM
|- - djellison   QUOTE (fredk @ Jun 17 2018, 06:34 AM) I g...   Jun 17 2018, 11:42 PM
- - scalbers   How severe is this dust storm compared with others...   Jun 17 2018, 07:55 PM
|- - mcaplinger   QUOTE (scalbers @ Jun 17 2018, 11:55 AM) ...   Jun 17 2018, 08:11 PM
|- - serpens   QUOTE (scalbers @ Jun 17 2018, 08:55 PM) ...   Jun 18 2018, 12:19 AM
- - fredk   From the latest MRO weather report: QUOTE By the e...   Jun 20 2018, 05:35 PM
- - mcaplinger   http://www.planetary.org/explore/space-top...mer-u...   Jun 20 2018, 09:57 PM
- - djellison   "The Martian dust storm has grown in size and...   Jun 20 2018, 10:31 PM
- - JRehling   Christopher Go is the ace of [superior planet] ast...   Jun 21 2018, 03:29 AM
5 Pages V   1 2 3 > » 

« Next Oldest · Opportunity · Next Newest »
 

Reply to this topicStart new topic

 

Display Mode: Switch to: Standard · Switch to: Linear+ · Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

RSS Lo-Fi Version Time is now: 17th December 2024 - 05:51 AM
Powered By IP.Board © 2024  IPS, Inc.
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and 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.