Author Topic: OSIRIS-REx/OSIRIS-APEX Mission Updates  (Read 147249 times)

Offline eeergo

Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #380 on: 10/11/2023 05:37 pm »
TAGSAM is not yet open. They're just using the stuff that spilled out.

Nelson just said that they exceeded their 60 gram collection goal. My guess is that they did that simply with the stuff that spilled out of the sampling mechanism. Assuming that TAGSAM is not empty, then they should have a lot of material.

250 g quoted from the inertia measurement.
-DaviD-

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #381 on: 10/11/2023 06:01 pm »

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #382 on: 10/11/2023 06:36 pm »
https://twitter.com/nasa/status/1712174157687882149

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Listen live: There were so many questions about the #OSIRISREx pristine asteroid sample revealed this morning to have high amounts of carbon and water that our scientists are back to share more of what we're learning.


Offline Blackstar

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #383 on: 10/11/2023 07:04 pm »
TAGSAM is not yet open. They're just using the stuff that spilled out.

Nelson just said that they exceeded their 60 gram collection goal. My guess is that they did that simply with the stuff that spilled out of the sampling mechanism. Assuming that TAGSAM is not empty, then they should have a lot of material.

250 g quoted from the inertia measurement.

Is the 250 g what is in the TAGSAM? Or what spilled out?

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #384 on: 10/11/2023 07:20 pm »
250g is the total captured in the TAGSAM before stowing the TAGSAM head in the capsule, they did inertia measurements while the head was still on the arm.

Offline Mariusuiram

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #385 on: 10/15/2023 10:49 pm »
As mentioned that 250 g estimate was very rough and not their original intended method. I think it was originally mentioned as being +/- 100 g. That estimate was made just after leaving Bennu. Still waiting for new info

Offline Zed_Noir

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #386 on: 10/16/2023 09:16 am »
Have a slightly different question about the returned samples from Bennu. Could the volume of the TAGSAM samples be less than the volume of the add-on samples inside the return capsule?

Offline Blackstar

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #387 on: 10/17/2023 02:15 am »
Have a slightly different question about the returned samples from Bennu. Could the volume of the TAGSAM samples be less than the volume of the add-on samples inside the return capsule?

I think you mean mass, not volume.


Offline Zed_Noir

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #388 on: 10/17/2023 08:41 am »
Have a slightly different question about the returned samples from Bennu. Could the volume of the TAGSAM samples be less than the volume of the add-on samples inside the return capsule?

I think you mean mass, not volume.


I meant volume. As in how much samples was retrieved. You could only allocated as many samples to researchers as the number of sample units are available.

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #389 on: 10/17/2023 02:18 pm »
Ah, you mean the number of samples (how many individual pieces), not their volume (i.e. how much space they take up).

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #390 on: 10/17/2023 03:28 pm »
have they opened the container yet? Or do they have an estimated date for when that happens?

Offline Blackstar

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #391 on: 10/22/2023 02:26 am »
Just saw this posted:

"Wait and see: Looks like the folks digging into the asteroid Bennu samples brought back by the OSIRIS-REx mission have run into a bit of trouble. The bulk material contained in the Touch-and-Go Sample Acquisition Mechanism -- or TAGSAM -- has proven tough to remove. Two of the 35 fasteners on the TAGSAM head could not be removed with allocated tools. The team needs now to develop and practice a new procedure to remove the remaining asteroid sample from the TAGSAM sampler head. Bennu material that has been extracted – now 70.3 grams -- already surpasses the goal of hauling back to Earth at least 60 grams."


Online catdlr

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #392 on: 10/22/2023 02:29 am »
Just saw this posted:

"Wait and see: Looks like the folks digging into the asteroid Bennu samples brought back by the OSIRIS-REx mission have run into a bit of trouble. The bulk material contained in the Touch-and-Go Sample Acquisition Mechanism -- or TAGSAM -- has proven tough to remove. Two of the 35 fasteners on the TAGSAM head could not be removed with allocated tools. The team needs now to develop and practice a new procedure to remove the remaining asteroid sample from the TAGSAM sampler head. Bennu material that has been extracted – now 70.3 grams -- already surpasses the goal of hauling back to Earth at least 60 grams."



Well, the good news is it must be shock stuff with samples, that the container is stuck.  Give them some time. Thanks, Blackstar for the update.
« Last Edit: 10/22/2023 02:30 am by catdlr »
It's Tony De La Rosa, ...I don't create this stuff, I just report it.

Offline Nomadd

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #393 on: 10/22/2023 05:39 am »
Just saw this posted:

"Wait and see: Looks like the folks digging into the asteroid Bennu samples brought back by the OSIRIS-REx mission have run into a bit of trouble. The bulk material contained in the Touch-and-Go Sample Acquisition Mechanism -- or TAGSAM -- has proven tough to remove. Two of the 35 fasteners on the TAGSAM head could not be removed with allocated tools. The team needs now to develop and practice a new procedure to remove the remaining asteroid sample from the TAGSAM sampler head. Bennu material that has been extracted – now 70.3 grams -- already surpasses the goal of hauling back to Earth at least 60 grams."


 If they need a hand, I have some experience at disassembling used spacecraft. All the required tools should still be in Mary's garage.
« Last Edit: 10/22/2023 05:42 am by Nomadd »
Those who danced were thought to be quite insane by those who couldn't hear the music.

Offline vjkane

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #394 on: 10/22/2023 06:20 pm »
If they need a hand, I have some experience at disassembling used spacecraft. All the required tools should still be in Mary's garage.

 :D

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #395 on: 10/23/2023 06:23 pm »
https://twitter.com/nasasolarsystem/status/1716488361874018741

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The #OSIRISREx team has surpassed NASA’s goal of bringing back 60 grams of material from asteroid Bennu! While the @Astromaterials team is still carefully collecting rocks and dust from the sampler hardware, they have already removed 70.3 grams.

https://blogs.nasa.gov/osiris-rex/2023/10/20/nasas-osiris-rex-achieves-sample-mass-milestone/

Quote
NASA’s OSIRIS-REx Achieves Sample Mass Milestone

The curation team processing NASA’s asteroid Bennu sample has removed and collected 2.48 ounces (70.3 grams) of rocks and dust from the sampler hardware – surpassing the agency’s goal of bringing at least 60 grams to Earth.

And the good news is, there’s still more of NASA’s OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer) sample to collect.

The sample processed so far includes the rocks and dust found on the outside of the sampler head, as well as a portion of the bulk sample from inside the head, which was accessed through the head’s mylar flap. Additional material remaining inside the sampler head, called the Touch-and-Go Sample Acquisition Mechanism, or TAGSAM, is set for removal later, adding to the mass total.

In the last week, the team at NASA’s Johnson Space Center in Houston changed its approach to opening the TAGSAM head, which contained the bulk of the rocks and dust collected by the spacecraft in 2020. After multiple attempts at removal, the team discovered two of the 35 fasteners on the TAGSAM head could not be removed with the current tools approved for use in the OSIRIS-REx glovebox. The team has been working to develop and implement new approaches to extract the material inside the head, while continuing to keep the sample safe and pristine.

As a first step, the team successfully accessed some of the material by holding down the head’s mylar flap and removing the sample inside with tweezers or a scoop, depending on material size. The collection and containment of material through this method, combined with the earlier collection of material located outside the head, yielded a total mass exceeding the 60 grams required.

The team will spend the next few weeks developing and practicing a new procedure to remove the remaining asteroid sample from the TAGSAM sampler head while simultaneously processing the material that was collected this week. The OSIRIS-REx science team will also proceed with its plan to characterize the extracted material and begin analysis of the bulk sample obtained so far.

All curation work on the sample – and the TAGSAM head – is performed in a specialized glovebox under a flow of nitrogen to keep it from being exposed to Earth’s atmosphere, preserving the sample’s pristine state for subsequent scientific analysis. The tools for any proposed solution to extract the remaining material from the head must be able to fit inside the glovebox and not compromise the scientific integrity of the collection, and any procedures must be consistent with the clean room’s standards.

While the procedure to access the final portion of the material is being developed, the team has removed the TAGSAM head from the active flow of nitrogen in the glovebox and stored it in its transfer container, sealed with an O-ring and surrounded by a sealed Teflon bag to make sure the sample is kept safe in a stable, nitrogen-rich, environment.

Author Erin Morton
Posted on October 20, 2023
Categories OSIRIS-REx
Tags asteroid, Bennu, Johnson Space Center, OSIRIS-REx, Sample Curation, Sample Return

Offline spacexplorer

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #396 on: 10/30/2023 08:52 am »
This reminds me an aneddoct about an astronaut unable to open a hatch during an EVA on ISS:

CapCom: "Try applying some consecutive short and high impulsive forces  to the hatch until the desired motion of the hatch is achieved."
Astronaut: "What?!?"
CapCom: "Hit the damn hatch with the hammer until it opens!!!"

Online catdlr

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #397 on: 11/14/2023 09:47 pm »
NASA Explorers Season 6, Episode 1: Launch

Quote
Nov 14, 2023
A journey of a billion miles and back begins with a launch.

OSIRIS-REx's goal: Travel to asteroid Bennu, collect a sample, and return it home. But why Bennu? Meet the NASA Explorers looking for clues to our early solar system in a sample of asteroid rock.

It’s not rockets and satellites that make NASA soar. It’s people. Go inside the space agency and follow the pioneers, risk-takers and experts at the frontline of exploration. This season, follow along with the OSIRIS-REx team, as they launch a spacecraft to an asteroid, collect a sample of Bennu, and bring it home to Earth.

It's Tony De La Rosa, ...I don't create this stuff, I just report it.

Offline Blackstar

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #398 on: 11/15/2023 01:54 am »
Heard a great presentation about the mission today. One of the takeaways is that they ran into a problem with opening the TAGSAM. It's not that it is impossible to do it, but that none of the approved tools in the sample receiving laboratory can do it. Now I assume that this means that they need a new tool, or they need to get an existing tool approved to be used in the sample receiving laboratory. They are currently studying that.

However, the interesting part is that they realized that they could hold open the O-ring on the TAGSAM and use tweezers to remove samples that are in sight. So they did that, and they managed to remove 70 grams of material. That meets their requirements. (He had a nice photo of the samples divided up into a sample tray.) So for now they area going to analyze those 70 grams and the TAGSAM is in storage until they can figure out how to open it to retrieve the remaining samples. There is no rush to do that because they already have quite a bit of material.

There were a lot of other things too, including info on the sample analysis so far. And I think he said that there's a conference coming up where they will reveal more results (not sure of that, and I don't think he said the AGU conference).
« Last Edit: 11/15/2023 01:55 am by Blackstar »

Offline Blackstar

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Re: OSIRIS-REx/OSIRIS-APEX Mission Updates
« Reply #399 on: 11/15/2023 01:58 am »
There were some other interesting aspects of the sampling, such as the difference between radar observations and the actual physical material that they encountered. I think he said that the radar was showing that Bennu was much more like sand, but when they imaged it the surface was covered with bigger chunks. They realized after pushing the sampler into it that the softer/sandier material was below the surface, so the radar was looking through the outer layer of the surface.

He also showed an interesting 3D model of the surface before and after the sampling, revealing the crater that they left. Some really sophisticated stuff.


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