IPB

Welcome Guest ( Log In | Register )

53 Pages V  « < 47 48 49 50 51 > »   
Reply to this topicStart new topic
InSight Surface Operations, 26 Nov 2018-
Deimos
post Oct 16 2019, 06:19 PM
Post #721


Martian Photographer
***

Group: Members
Posts: 329
Joined: 3-March 05
Member No.: 183



Sirius. Neither moon enters ICC field of view.
Go to the top of the page
 
+Quote Post
fredk
post Oct 16 2019, 08:05 PM
Post #722


Senior Member
****

Group: Members
Posts: 3950
Joined: 17-January 05
Member No.: 152



Thanks, Deimos. Makes sense: centre of field of view very roughly 10 deg west of south, the right edge of ICC would be crudely 75 deg west of south, so unable to see the equatorial moons from 4.5 deg N latitude.
Go to the top of the page
 
+Quote Post
PaulH51
post Oct 17 2019, 08:13 PM
Post #723


Senior Member
****

Group: Members
Posts: 1764
Joined: 30-January 13
From: Penang, Malaysia.
Member No.: 6853



News release from NASA/JPL Link "Mars InSight's 'Mole' Is Moving Again"
Go to the top of the page
 
+Quote Post
atomoid
post Oct 18 2019, 12:22 AM
Post #724


Member
***

Group: Members
Posts: 796
Joined: 15-March 05
From: Santa Cruz, CA
Member No.: 196



todays (sol315) progress full res crop 5fps
Attached Image
Go to the top of the page
 
+Quote Post
Paolo
post Oct 18 2019, 06:15 AM
Post #725


Senior Member
****

Group: Members
Posts: 1684
Joined: 3-August 06
From: 43° 35' 53" N 1° 26' 35" E
Member No.: 1004



it's no longer a mole, they should consider renaming it "the corkscrew"
Go to the top of the page
 
+Quote Post
stevesliva
post Oct 18 2019, 05:40 PM
Post #726


Senior Member
****

Group: Members
Posts: 1411
Joined: 14-October 05
From: Vermont
Member No.: 530



Tilman's logbook at DLR updated:
https://www.dlr.de/blogs/en/all-blog-posts/...on-logbook.aspx

QUOTE
Good news from Mars, DLR´s 'Mole' has moved forward! The HP3 heat flow probe has moved a total of two centimeters (calculated from the image data by Troy Hudson and Bob Deen, JPL/Caltech) downward in three hammering sessions with carefully chosen 20 and then two times 100 strokes.

...

Eventually, the Mole must work on its own but we will support it at shallow depths by loading the ground by pushing hard on the surface with the scoop.

There has been rotation of the Mole around its axis, more so in the first two hammering sessions. We are carefully watching the rotation. From testing in the testbed on Earth we know that the probe tends to rotate as it penetrates. Once the tether is in the ground we expect it to act as a fin that will reduce the rotation as it did in the testbed.
Go to the top of the page
 
+Quote Post
Keatah
post Oct 18 2019, 05:50 PM
Post #727


Junior Member
**

Group: Members
Posts: 36
Joined: 13-June 08
Member No.: 4206



If the mole is able to rotate on its own without contact from the scoop. Then it's simply a result of rotary components being used internally. Not too unlike ball-point pen retraction/ratchet mechanism that is able to recoil.


Go to the top of the page
 
+Quote Post
atomoid
post Oct 18 2019, 11:08 PM
Post #728


Member
***

Group: Members
Posts: 796
Joined: 15-March 05
From: Santa Cruz, CA
Member No.: 196



I'd thought the rotation was due to some complex interaction between the mole, scoop and soil constraints at gravity angle, but indeed its as if its roller-cam setup was inspired by a ball point pen clicker, it seems like it could impart CCW rotation when the roller edges over the 'cliff'. This site has many papers on the HP3 hammering mechanism.
Go to the top of the page
 
+Quote Post
paraisosdelsiste...
post Oct 20 2019, 07:09 AM
Post #729


Member
***

Group: Members
Posts: 106
Joined: 20-August 12
From: Spain
Member No.: 6597



Sol 318 advancement look promising.

Attached Image
Go to the top of the page
 
+Quote Post
kungpostyle
post Oct 20 2019, 12:38 PM
Post #730


Junior Member
**

Group: Members
Posts: 99
Joined: 20-January 06
Member No.: 652



The mole doesn't seem to be rotating in this hammering session. Maybe it was spinning away from an obstacle, or it is in firm contact with the soil now which has created more friction?


--------------------
Go to the top of the page
 
+Quote Post
Decepticon
post Oct 21 2019, 05:20 AM
Post #731


Senior Member
****

Group: Members
Posts: 1224
Joined: 25-November 04
Member No.: 114



Does the Tether Unit have to be moved back above mole?
Go to the top of the page
 
+Quote Post
PaulH51
post Oct 21 2019, 08:24 AM
Post #732


Senior Member
****

Group: Members
Posts: 1764
Joined: 30-January 13
From: Penang, Malaysia.
Member No.: 6853



QUOTE (Decepticon @ Oct 21 2019, 01:20 PM) *
Does the Tether Unit have to be moved back above mole?


"The team are indeed considering replacing the support structure so the science tether will have a direct line down into the soil from the TLM, rather than having to do a dog-leg. Agreement to do that, and agreement on exactly how it would be done are being actively pursued."
(Source a member of the team)
Go to the top of the page
 
+Quote Post
stevesliva
post Oct 22 2019, 03:26 PM
Post #733


Senior Member
****

Group: Members
Posts: 1411
Joined: 14-October 05
From: Vermont
Member No.: 530



Tom Hoffman did a presentation at the Mars Society Convention (again). Space.com has pullquoted it somewhat, but the replay isn't yet on YouTube.
https://www.space.com/mars-soil-weird-nasa-...ght-lander.html
Go to the top of the page
 
+Quote Post
atomoid
post Oct 22 2019, 10:07 PM
Post #734


Member
***

Group: Members
Posts: 796
Joined: 15-March 05
From: Santa Cruz, CA
Member No.: 196



while we wait for next steps, here are cherry-picked frames from the full sequence cropped and resampled to squeeze into a 3mb gif file 10fps
Attached Image

Go to the top of the page
 
+Quote Post
Phil Stooke
post Oct 23 2019, 09:44 PM
Post #735


Solar System Cartographer
****

Group: Members
Posts: 8025
Joined: 5-April 05
From: Canada
Member No.: 227



On sol 322 the scoop was moved sideways slightly, away from the mole, and then pushed down to touch the mole again at a lower position, to keep contact with the mole as it descends.

Phil


--------------------
... because the Solar System ain't gonna map itself.
Go to the top of the page
 
+Quote Post

53 Pages V  « < 47 48 49 50 51 > » 
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 18th November 2019 - 05:05 AM
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 a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.