What is a secondary thwack arm, and what gets thwacked?
$begingroup$
@Hobbes's answer calls attention to Emily Lakdawalla's book The Design and Engineering of Curiosity : How the Mars Rover Performs Its Job which led me to reading excerpts in several Planetary Society blogposts including Book Update: The Design and Engineering of Curiosity which includes the following image(s) and description.
At the bottom there is something called a secondary thwack arm.
Question: What is a secondary thwack arm, and what gets thwacked? I certainly hope it's not the bee trap! (shown in the linked original image link below)
("bonus points" for an image of the primary thwack arm.)
Original image but answer shows it as well.
Parts of the CUriosity Chirma 1-millimeter Sieve Pathway
A figure from the forthcoming book The Design and Engineering of Curiosity: How the Mars Rover Performs its Job, by Emily Lakdawalla, illustrating the parts of Curiosity's sample handling mechanism that sift and portion out powdered samples of Martian material using a sieve with 1-millimeter holes.
NASA / JPL / MSSS / Emily Lakdawalla
rovers curiosity
asked Jan 12 at 23:49
uhohuhoh
35.9k18127451
$endgroup$
add a comment |
$begingroup$
@Hobbes's answer calls attention to Emily Lakdawalla's book The Design and Engineering of Curiosity : How the Mars Rover Performs Its Job which led me to reading excerpts in several Planetary Society blogposts including Book Update: The Design and Engineering of Curiosity which includes the following image(s) and description.
At the bottom there is something called a secondary thwack arm.
Question: What is a secondary thwack arm, and what gets thwacked? I certainly hope it's not the bee trap! (shown in the linked original image link below)
("bonus points" for an image of the primary thwack arm.)
Original image but answer shows it as well.
Parts of the CUriosity Chirma 1-millimeter Sieve Pathway
A figure from the forthcoming book The Design and Engineering of Curiosity: How the Mars Rover Performs its Job, by Emily Lakdawalla, illustrating the parts of Curiosity's sample handling mechanism that sift and portion out powdered samples of Martian material using a sieve with 1-millimeter holes.
NASA / JPL / MSSS / Emily Lakdawalla
rovers curiosity
asked Jan 12 at 23:49
uhohuhoh
35.9k18127451
$endgroup$
$begingroup$
probably no need for athwack-armtag.
$endgroup$
– uhoh
Jan 12 at 23:49
add a comment |
$begingroup$
@Hobbes's answer calls attention to Emily Lakdawalla's book The Design and Engineering of Curiosity : How the Mars Rover Performs Its Job which led me to reading excerpts in several Planetary Society blogposts including Book Update: The Design and Engineering of Curiosity which includes the following image(s) and description.
At the bottom there is something called a secondary thwack arm.
Question: What is a secondary thwack arm, and what gets thwacked? I certainly hope it's not the bee trap! (shown in the linked original image link below)
("bonus points" for an image of the primary thwack arm.)
Original image but answer shows it as well.
Parts of the CUriosity Chirma 1-millimeter Sieve Pathway
A figure from the forthcoming book The Design and Engineering of Curiosity: How the Mars Rover Performs its Job, by Emily Lakdawalla, illustrating the parts of Curiosity's sample handling mechanism that sift and portion out powdered samples of Martian material using a sieve with 1-millimeter holes.
NASA / JPL / MSSS / Emily Lakdawalla
rovers curiosity
asked Jan 12 at 23:49
uhohuhoh
35.9k18127451
$endgroup$
@Hobbes's answer calls attention to Emily Lakdawalla's book The Design and Engineering of Curiosity : How the Mars Rover Performs Its Job which led me to reading excerpts in several Planetary Society blogposts including Book Update: The Design and Engineering of Curiosity which includes the following image(s) and description.
At the bottom there is something called a secondary thwack arm.
Question: What is a secondary thwack arm, and what gets thwacked? I certainly hope it's not the bee trap! (shown in the linked original image link below)
("bonus points" for an image of the primary thwack arm.)
Original image but answer shows it as well.
Parts of the CUriosity Chirma 1-millimeter Sieve Pathway
A figure from the forthcoming book The Design and Engineering of Curiosity: How the Mars Rover Performs its Job, by Emily Lakdawalla, illustrating the parts of Curiosity's sample handling mechanism that sift and portion out powdered samples of Martian material using a sieve with 1-millimeter holes.
NASA / JPL / MSSS / Emily Lakdawalla
rovers curiosity
rovers curiosity
asked Jan 12 at 23:49
uhohuhoh
35.9k18127451
asked Jan 12 at 23:49
uhohuhoh
35.9k18127451
edited Jan 13 at 5:32
uhoh
asked Jan 12 at 23:49
uhohuhoh
35.9k18127451
asked Jan 12 at 23:49
uhohuhoh
35.9k18127451
asked Jan 12 at 23:49
uhohuhoh
35.9k18127451
35.9k18127451
$begingroup$
probably no need for athwack-armtag.
$endgroup$
– uhoh
Jan 12 at 23:49
add a comment |
$begingroup$
probably no need for athwack-armtag.
$endgroup$
– uhoh
Jan 12 at 23:49
$begingroup$
probably no need for a
thwack-arm tag.$endgroup$
– uhoh
Jan 12 at 23:49
$begingroup$
probably no need for a
thwack-arm tag.$endgroup$
– uhoh
Jan 12 at 23:49
add a comment |
1 Answer
1
active
oldest
votes
$begingroup$
The key search terms for this one are "lakdawalla thwack arm".
According to one of Emily Lakdawalla's blog posts, the thwack arms are used to knock material out of the sieves, much in the way you might thwack a flour sifter against a kitchen counter to clear it:
Both the 150-micrometer sieve and the 1-millimeter sieve hardware is mounted on motorized swing arms that wind up an internal spring mechanism, which releases at a certain point in the range of motion and "thwacks" (high-g impact driven by the spring) the sieves against hardstops in order to clean the sieves of material that might be blinding them. Testing has shown this to be a very effective way of cleaning the sieves inside CHIMRA in order to support the many sample processing operations we have to do.
In another post, Lakdawalla recommends that you, @uhoh, should buy the book:
But if you're the kind of person who hears the words "secondary thwack arm" and must find out what a thwack arm is and why it's called that, and also beg to know if there is a primary thwack arm, my first book will give you many happy geeky moments.
This tweet thread includes a picture of the primary thwack arm, but desktop web Twitter isn't making it easy to snatch the picture.
edited Jan 13 at 1:32
Organic Marble
55.6k3150239
answered Jan 13 at 0:29
Russell BorogoveRussell Borogove
84.7k3284367
$endgroup$
$begingroup$
I added what I think is the picture you are after; please delete if I guessed wrong. I don't know any way to transmit the picture to you except by adding it to the answer.
$endgroup$
– Organic Marble
Jan 13 at 1:32
$begingroup$
I was after the second, more "overviewy" pic from the same tweet, but no biggie.
$endgroup$
– Russell Borogove
Jan 13 at 1:51
$begingroup$
Argh, well, feel free to bin it.
$endgroup$
– Organic Marble
Jan 13 at 1:53
$begingroup$
I've removed the image from the question as it's now redundant, it's great to have them all in one place here, and despite the illustration of the primary thwack arm, I'll still look for her "first book (that) will give (me) many happy geeky moments." I hereby officially award the "bonus points" as well.
$endgroup$
– uhoh
Jan 13 at 2:19
2
$begingroup$
this one ?
$endgroup$
– JCRM
Jan 13 at 10:44
add a comment |
Your Answer
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
The key search terms for this one are "lakdawalla thwack arm".
According to one of Emily Lakdawalla's blog posts, the thwack arms are used to knock material out of the sieves, much in the way you might thwack a flour sifter against a kitchen counter to clear it:
Both the 150-micrometer sieve and the 1-millimeter sieve hardware is mounted on motorized swing arms that wind up an internal spring mechanism, which releases at a certain point in the range of motion and "thwacks" (high-g impact driven by the spring) the sieves against hardstops in order to clean the sieves of material that might be blinding them. Testing has shown this to be a very effective way of cleaning the sieves inside CHIMRA in order to support the many sample processing operations we have to do.
In another post, Lakdawalla recommends that you, @uhoh, should buy the book:
But if you're the kind of person who hears the words "secondary thwack arm" and must find out what a thwack arm is and why it's called that, and also beg to know if there is a primary thwack arm, my first book will give you many happy geeky moments.
This tweet thread includes a picture of the primary thwack arm, but desktop web Twitter isn't making it easy to snatch the picture.
edited Jan 13 at 1:32
Organic Marble
55.6k3150239
answered Jan 13 at 0:29
Russell BorogoveRussell Borogove
84.7k3284367
$endgroup$
$begingroup$
I added what I think is the picture you are after; please delete if I guessed wrong. I don't know any way to transmit the picture to you except by adding it to the answer.
$endgroup$
– Organic Marble
Jan 13 at 1:32
$begingroup$
I was after the second, more "overviewy" pic from the same tweet, but no biggie.
$endgroup$
– Russell Borogove
Jan 13 at 1:51
$begingroup$
Argh, well, feel free to bin it.
$endgroup$
– Organic Marble
Jan 13 at 1:53
$begingroup$
I've removed the image from the question as it's now redundant, it's great to have them all in one place here, and despite the illustration of the primary thwack arm, I'll still look for her "first book (that) will give (me) many happy geeky moments." I hereby officially award the "bonus points" as well.
$endgroup$
– uhoh
Jan 13 at 2:19
2
$begingroup$
this one ?
$endgroup$
– JCRM
Jan 13 at 10:44
add a comment |
$begingroup$
The key search terms for this one are "lakdawalla thwack arm".
According to one of Emily Lakdawalla's blog posts, the thwack arms are used to knock material out of the sieves, much in the way you might thwack a flour sifter against a kitchen counter to clear it:
Both the 150-micrometer sieve and the 1-millimeter sieve hardware is mounted on motorized swing arms that wind up an internal spring mechanism, which releases at a certain point in the range of motion and "thwacks" (high-g impact driven by the spring) the sieves against hardstops in order to clean the sieves of material that might be blinding them. Testing has shown this to be a very effective way of cleaning the sieves inside CHIMRA in order to support the many sample processing operations we have to do.
In another post, Lakdawalla recommends that you, @uhoh, should buy the book:
But if you're the kind of person who hears the words "secondary thwack arm" and must find out what a thwack arm is and why it's called that, and also beg to know if there is a primary thwack arm, my first book will give you many happy geeky moments.
This tweet thread includes a picture of the primary thwack arm, but desktop web Twitter isn't making it easy to snatch the picture.
edited Jan 13 at 1:32
Organic Marble
55.6k3150239
answered Jan 13 at 0:29
Russell BorogoveRussell Borogove
84.7k3284367
$endgroup$
$begingroup$
I added what I think is the picture you are after; please delete if I guessed wrong. I don't know any way to transmit the picture to you except by adding it to the answer.
$endgroup$
– Organic Marble
Jan 13 at 1:32
$begingroup$
I was after the second, more "overviewy" pic from the same tweet, but no biggie.
$endgroup$
– Russell Borogove
Jan 13 at 1:51
$begingroup$
Argh, well, feel free to bin it.
$endgroup$
– Organic Marble
Jan 13 at 1:53
$begingroup$
I've removed the image from the question as it's now redundant, it's great to have them all in one place here, and despite the illustration of the primary thwack arm, I'll still look for her "first book (that) will give (me) many happy geeky moments." I hereby officially award the "bonus points" as well.
$endgroup$
– uhoh
Jan 13 at 2:19
2
$begingroup$
this one ?
$endgroup$
– JCRM
Jan 13 at 10:44
add a comment |
$begingroup$
The key search terms for this one are "lakdawalla thwack arm".
According to one of Emily Lakdawalla's blog posts, the thwack arms are used to knock material out of the sieves, much in the way you might thwack a flour sifter against a kitchen counter to clear it:
Both the 150-micrometer sieve and the 1-millimeter sieve hardware is mounted on motorized swing arms that wind up an internal spring mechanism, which releases at a certain point in the range of motion and "thwacks" (high-g impact driven by the spring) the sieves against hardstops in order to clean the sieves of material that might be blinding them. Testing has shown this to be a very effective way of cleaning the sieves inside CHIMRA in order to support the many sample processing operations we have to do.
In another post, Lakdawalla recommends that you, @uhoh, should buy the book:
But if you're the kind of person who hears the words "secondary thwack arm" and must find out what a thwack arm is and why it's called that, and also beg to know if there is a primary thwack arm, my first book will give you many happy geeky moments.
This tweet thread includes a picture of the primary thwack arm, but desktop web Twitter isn't making it easy to snatch the picture.
edited Jan 13 at 1:32
Organic Marble
55.6k3150239
answered Jan 13 at 0:29
Russell BorogoveRussell Borogove
84.7k3284367
$endgroup$
The key search terms for this one are "lakdawalla thwack arm".
According to one of Emily Lakdawalla's blog posts, the thwack arms are used to knock material out of the sieves, much in the way you might thwack a flour sifter against a kitchen counter to clear it:
Both the 150-micrometer sieve and the 1-millimeter sieve hardware is mounted on motorized swing arms that wind up an internal spring mechanism, which releases at a certain point in the range of motion and "thwacks" (high-g impact driven by the spring) the sieves against hardstops in order to clean the sieves of material that might be blinding them. Testing has shown this to be a very effective way of cleaning the sieves inside CHIMRA in order to support the many sample processing operations we have to do.
In another post, Lakdawalla recommends that you, @uhoh, should buy the book:
But if you're the kind of person who hears the words "secondary thwack arm" and must find out what a thwack arm is and why it's called that, and also beg to know if there is a primary thwack arm, my first book will give you many happy geeky moments.
This tweet thread includes a picture of the primary thwack arm, but desktop web Twitter isn't making it easy to snatch the picture.
edited Jan 13 at 1:32
Organic Marble
55.6k3150239
answered Jan 13 at 0:29
Russell BorogoveRussell Borogove
84.7k3284367
edited Jan 13 at 1:32
Organic Marble
55.6k3150239
edited Jan 13 at 1:32
Organic Marble
55.6k3150239
edited Jan 13 at 1:32
Organic Marble
55.6k3150239
55.6k3150239
answered Jan 13 at 0:29
Russell BorogoveRussell Borogove
84.7k3284367
answered Jan 13 at 0:29
Russell BorogoveRussell Borogove
84.7k3284367
answered Jan 13 at 0:29
Russell BorogoveRussell Borogove
84.7k3284367
84.7k3284367
$begingroup$
I added what I think is the picture you are after; please delete if I guessed wrong. I don't know any way to transmit the picture to you except by adding it to the answer.
$endgroup$
– Organic Marble
Jan 13 at 1:32
$begingroup$
I was after the second, more "overviewy" pic from the same tweet, but no biggie.
$endgroup$
– Russell Borogove
Jan 13 at 1:51
$begingroup$
Argh, well, feel free to bin it.
$endgroup$
– Organic Marble
Jan 13 at 1:53
$begingroup$
I've removed the image from the question as it's now redundant, it's great to have them all in one place here, and despite the illustration of the primary thwack arm, I'll still look for her "first book (that) will give (me) many happy geeky moments." I hereby officially award the "bonus points" as well.
$endgroup$
– uhoh
Jan 13 at 2:19
2
$begingroup$
this one ?
$endgroup$
– JCRM
Jan 13 at 10:44
add a comment |
$begingroup$
I added what I think is the picture you are after; please delete if I guessed wrong. I don't know any way to transmit the picture to you except by adding it to the answer.
$endgroup$
– Organic Marble
Jan 13 at 1:32
$begingroup$
I was after the second, more "overviewy" pic from the same tweet, but no biggie.
$endgroup$
– Russell Borogove
Jan 13 at 1:51
$begingroup$
Argh, well, feel free to bin it.
$endgroup$
– Organic Marble
Jan 13 at 1:53
$begingroup$
I've removed the image from the question as it's now redundant, it's great to have them all in one place here, and despite the illustration of the primary thwack arm, I'll still look for her "first book (that) will give (me) many happy geeky moments." I hereby officially award the "bonus points" as well.
$endgroup$
– uhoh
Jan 13 at 2:19
2
$begingroup$
this one ?
$endgroup$
– JCRM
Jan 13 at 10:44
$begingroup$
I added what I think is the picture you are after; please delete if I guessed wrong. I don't know any way to transmit the picture to you except by adding it to the answer.
$endgroup$
– Organic Marble
Jan 13 at 1:32
$begingroup$
I added what I think is the picture you are after; please delete if I guessed wrong. I don't know any way to transmit the picture to you except by adding it to the answer.
$endgroup$
– Organic Marble
Jan 13 at 1:32
$begingroup$
I was after the second, more "overviewy" pic from the same tweet, but no biggie.
$endgroup$
– Russell Borogove
Jan 13 at 1:51
$begingroup$
I was after the second, more "overviewy" pic from the same tweet, but no biggie.
$endgroup$
– Russell Borogove
Jan 13 at 1:51
$begingroup$
Argh, well, feel free to bin it.
$endgroup$
– Organic Marble
Jan 13 at 1:53
$begingroup$
Argh, well, feel free to bin it.
$endgroup$
– Organic Marble
Jan 13 at 1:53
$begingroup$
I've removed the image from the question as it's now redundant, it's great to have them all in one place here, and despite the illustration of the primary thwack arm, I'll still look for her "first book (that) will give (me) many happy geeky moments." I hereby officially award the "bonus points" as well.
$endgroup$
– uhoh
Jan 13 at 2:19
$begingroup$
I've removed the image from the question as it's now redundant, it's great to have them all in one place here, and despite the illustration of the primary thwack arm, I'll still look for her "first book (that) will give (me) many happy geeky moments." I hereby officially award the "bonus points" as well.
$endgroup$
– uhoh
Jan 13 at 2:19
2
2
$begingroup$
this one ?
$endgroup$
– JCRM
Jan 13 at 10:44
$begingroup$
this one ?
$endgroup$
– JCRM
Jan 13 at 10:44
add a comment |
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$begingroup$
probably no need for a
thwack-armtag.$endgroup$
– uhoh
Jan 12 at 23:49