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MahFL
Posted on: Apr 9 2021, 09:26 AM


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Looks like the rotor blades are now unlocked.

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251507 · Replies: 818 · Views: 437256

MahFL
Posted on: Apr 8 2021, 10:53 AM


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Some thumbnails came down showing a rotor blade movement.

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251479 · Replies: 818 · Views: 437256

MahFL
Posted on: Apr 7 2021, 08:30 AM


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QUOTE (djellison @ Apr 7 2021, 06:05 AM) *
Are you talking about that Watson sensor crud that's in every Watson image?


It seems so... huh.gif
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251442 · Replies: 309 · Views: 147498

MahFL
Posted on: Apr 7 2021, 04:49 AM


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A stone seems to be stuck onto the wheel, casting quite a shadow. I wonder if it penetrated the wheel skin ?

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251434 · Replies: 309 · Views: 147498

MahFL
Posted on: Apr 4 2021, 04:00 AM


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Whoot !

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251355 · Replies: 818 · Views: 437256

MahFL
Posted on: Apr 2 2021, 03:13 AM


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QUOTE (Marvin @ Apr 1 2021, 10:20 PM) *
Interesting how the fine dust sticks to things.

Thanks for the feedback.


It's also thought Martian dust is electrostatically charged which also helps it stick to surfaces.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251330 · Replies: 309 · Views: 147498

MahFL
Posted on: Apr 1 2021, 10:18 PM


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Nothing exposed is pristine after a dynamic landing on dusty Mars...
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251327 · Replies: 309 · Views: 147498

MahFL
Posted on: Mar 24 2021, 11:03 PM


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They said Ingenuity is a tech demo so they pretty much could use what they wanted, long term survivability was not an objective, so hence the capability of using a modern processor. Also Ingenuity's nav cam takes 30 frames per second pictures for flying navigation purposes. I think they said they did do a little hardening of the CPU, but not the amount a processor would get designed to last a decade or more on Mars.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251177 · Replies: 7 · Views: 14923

MahFL
Posted on: Mar 24 2021, 10:55 PM


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QUOTE (MrNatural @ Mar 24 2021, 09:53 PM) *
Is the launch point going to be in one of the scour marks from the descent stage's engines? Might be less dusty....


Looks like it's just outside the blast zone, maybe some dust was blown.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251176 · Replies: 818 · Views: 437256

MahFL
Posted on: Mar 18 2021, 10:38 PM


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Nice to see a mission objective completed.
  Forum: InSight · Post Preview: #251075 · Replies: 1270 · Views: 1002250

MahFL
Posted on: Mar 16 2021, 12:57 AM


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They opened a cover on the sample receiving part on the rover, does this cover remain permanently open ?

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #251002 · Replies: 309 · Views: 147498

MahFL
Posted on: Mar 13 2021, 03:17 PM


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QUOTE (PaulH51 @ Mar 13 2021, 02:11 PM) *
Here's my rough and ready mosaic of the 8 overlapping frames of the Sol 22 ejected Belly Pan that protected the sampling system bay during the later part of EDL.
De-Bayer (GIMP) stitched (MS-ICE)


I did not know there was a cover on the sample handling system, no one ever mentioned that in any of the briefings I saw.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250921 · Replies: 309 · Views: 147498

MahFL
Posted on: Mar 10 2021, 03:21 PM


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QUOTE (Brian Swift @ Mar 6 2021, 03:18 AM) *
Anyone know if "nylon" zip ties have been used on previous rovers or if they are new to Perseverance?


Here are some zip ties on Opportunity :

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250835 · Replies: 477 · Views: 263318

MahFL
Posted on: Mar 9 2021, 11:18 PM


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Nice new image came down.

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250812 · Replies: 122 · Views: 103950

MahFL
Posted on: Mar 9 2021, 11:22 AM


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QUOTE (MarkL @ Mar 9 2021, 10:20 AM) *
Do we have any insight as to why the small deltaic remnants exist at such a distance from the main delta front? Did they move somehow from where they were emplaced? What could cause the significant and remarkably complete (scoured clean down to the top of the underlying unit) erosion of the delta material and what saved these remnants which are presumably analogues of the main delta. Could they have been islands in the lake?


Likely chance and the vagaries of the wind over billions of years.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250762 · Replies: 275 · Views: 157548

MahFL
Posted on: Mar 9 2021, 04:15 AM


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QUOTE (Floyd @ Mar 9 2021, 01:48 AM) *
The Raw page has several types of images and cameras. I did not see listed the SuperCam (Perseverence ChemCam). Will these images eventually find their way to the raw page?


I would assume so, as the list has grown as images come down from the different cameras.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250751 · Replies: 178 · Views: 141331

MahFL
Posted on: Mar 7 2021, 12:43 AM


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QUOTE (serpens @ Mar 6 2021, 11:23 PM) *
Not sure about the morphing of Perseverance to Percy. For me the rovers, like ships, have all been female and Perseverance's role is a gatherer, traditionally a female role.


It was Adam Steltzner himself who referred to her as Percy.

"The name Percy is a girl's name of French origin."
  Forum: Chit Chat · Post Preview: #250654 · Replies: 17 · Views: 15155

MahFL
Posted on: Mar 6 2021, 03:43 PM


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QUOTE (Marvin @ Mar 6 2021, 03:27 PM) *
“But perhaps the most visible change is in the grousers. They are ten percent taller and run across the width of the wheel in a near straight line. It’s got a slight curvature to it to help give some strength to it,” says JPL engineer Patrick DeGrosse.


That Percy wheel looks pretty good for doing 60Km.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250625 · Replies: 309 · Views: 147498

MahFL
Posted on: Mar 6 2021, 11:58 AM


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QUOTE (Nix @ Mar 6 2021, 12:11 PM) *
Been wondering about that too. To make them stronger than straight lines would? Curiosity's were more like the design in most tires, but then inverted; raised rims instead of grooves.


I found the answer :

"Extensive testing in the Mars Yard at NASA's Jet Propulsion Laboratory, which built the rover and manages operations, has shown these treads better withstand the pressure from sharp rocks and grip just as well or better than Curiosity's when driving on sand."

https://www.nasa.gov/feature/nasas-persever...-and-air-brakes
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250611 · Replies: 309 · Views: 147498

MahFL
Posted on: Mar 6 2021, 10:42 AM


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Why did they make the tread pattern curved and not just a straight line ?
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250609 · Replies: 309 · Views: 147498

MahFL
Posted on: Mar 6 2021, 10:32 AM


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QUOTE (Phil Stooke @ Mar 6 2021, 12:40 AM) *
Hi Steve. They just had a press conference and image release on the mission website which includes this:

They will decide soon which of the two paths to take, but they seemed to prefer the clockwise path out of the landing area. Later it meets up with the nominal path through the delta.

Phil


They could have used different colours for the first part, I thought the blue and purple were the same colour when I watched the news briefing.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250608 · Replies: 309 · Views: 147498

MahFL
Posted on: Mar 5 2021, 11:12 AM


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First drive.

  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250566 · Replies: 477 · Views: 263318

MahFL
Posted on: Mar 5 2021, 07:25 AM


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QUOTE (vjkane @ Mar 5 2021, 05:28 AM) *
...Percy can't pick them up to deliver them to the MAV.


I was under the impression once Percy drops the tubes on the ground it cannot pick them back up.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250559 · Replies: 275 · Views: 157548

MahFL
Posted on: Mar 4 2021, 10:45 PM


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Looks like they moved the front right wheel.
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250544 · Replies: 477 · Views: 263318

MahFL
Posted on: Mar 4 2021, 08:31 PM


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QUOTE (Gladstoner @ Mar 4 2021, 06:50 AM) *
A portion of a possible traverse that would examine some really interesting features:..


Looks like a lot of sand traps to me...
  Forum: Perseverance- Mars 2020 Rover · Post Preview: #250535 · Replies: 275 · Views: 157548

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