MARDI microphone, maybe possibly it'll be turned on? |
MARDI microphone, maybe possibly it'll be turned on? |
Sep 18 2008, 03:52 PM
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#1
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Leonard David reports that "the Phoenix lander team is going forward with turning on the spacecraft’s microphone."
I'm working on finding out more details. (For instance, I want to know if this also means they'll get to use the camera itself, maybe get a different perspective on Holy Cow, if the camera's pointing the right way.) In the meantime, enjoy hearing what Bill Nye and others would sound like on Mars before they asphyxiated. Yay! Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 18 2008, 03:56 PM
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#2
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
That's fantastic news! Being able to play kids the sound of the wind blowing on Mars would be brilliant! As you so eloquently put it, "Yay!"
Having said that... and without wanting to blow on anyone's chips here ... is this a sign that the Phoenix team is maybe sensing that the sand is really rushing through the hourglass now, and the time has come to start trying cool and unusual things..? -------------------- |
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Sep 18 2008, 04:24 PM
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#3
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
is this a sign that the Phoenix team is maybe sensing that the sand is really rushing through the hourglass now, and the time has come to start trying cool and unusual things..? It's probably the realization that at this point, turning MARDI on can't jeopardize the success of the mission anymore so they might as well do it. I don't see it as running against the clock. I'm glad they decided to turn it on, was hoping it would happen sometime during the extended mission. -------------------- |
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Sep 18 2008, 05:03 PM
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#4
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Senior Member Group: Members Posts: 4247 Joined: 17-January 05 Member No.: 152 |
I wonder if it will be sensitive enough to hear wind directly? Maybe some cavity somewhere on Phoenix will resonate in the wind and make a whistle or hum? Maybe the sound of the solar arrays flapping in the wind would be easier to hear, if it could carry directly through the body of Phoenix?
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Sep 18 2008, 05:18 PM
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#5
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
It's hard to know what, if anything, it'll hear; it was intended to listen to descent noises (whoosh and all that), so is probably pretty insensitive to the level of sound that currently prevails at the landing site -- but we'll see. We also have to see if it still works or not. So -- hope, but don't expect, to hear anything!
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 18 2008, 05:22 PM
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#6
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
It would be great if they could acquire audio during soil sampling and ice scraping.
-------------------- If Occam had heard my theory, things would be very different now.
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Sep 18 2008, 05:27 PM
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#7
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
The motors in the robotic arm should produce a buzzing sound when operated, right?
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Sep 18 2008, 10:21 PM
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#8
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
OK, here's a challenge for someone(s) with a facility for 3D visualization. The question is, what would MARDI be looking at if it took an image right now? More specifically, could it see any of the ice patches in Holy Cow? Attached is an image of the underside of the lander, in which you can see MARDI (it's the thing covered with a blue cover, actually a glove, just like the glove the technician is wearing!) I've tried to puzzle it out but am afraid of errors and am hoping a couple of people here can try to figure it out independently. Also relevant: its FOV is 66 degrees.
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 18 2008, 10:39 PM
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#9
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Senior Member Group: Admin Posts: 3108 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
Perhaps we'll hear this...
mardi_1stsound.mp3 ( 25.1K ) Number of downloads: 1093 Sorry...couldn't resist. |
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Sep 18 2008, 11:01 PM
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#10
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
OK - If Phoenix is like a clock...
Solar Panels are at 2.30 and 8.30 The arm is mounted at about 1.30 MARDI looks to be at about 7 - sort of behind where the elbow of the arm was when folded flat. http://www.lockheedmartin.com/data/assets/14819.gif http://www.lockheedmartin.com/data/assets/14845.jpg I would GUESS - the area marked green...possibly getting a corner of one bit of the exposed stuff - but with MARDI being pointing slight away from straight down, I'm not confident. |
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Sep 18 2008, 11:47 PM
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#11
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
doug,
In the second image you posted above ( http://www.lockheedmartin.com/data/assets/14845.jpg) it appears the telltale 'cord' has the bend (or similar) that we have seen from the first Sol it was deployed.... cheers -------------------- CLA CLL
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Sep 19 2008, 01:13 AM
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#12
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Junior Member Group: Members Posts: 29 Joined: 12-February 04 Member No.: 29 |
OK - If Phoenix is like a clock... Solar Panels are at 2.30 and 8.30 The arm is mounted at about 1.30 MARDI looks to be at about 7 - sort of behind where the elbow of the arm was when folded flat. http://www.lockheedmartin.com/data/assets/14819.gif http://www.lockheedmartin.com/data/assets/14845.jpg I would GUESS - the area marked green...possibly getting a corner of one bit of the exposed stuff - but with MARDI being pointing slight away from straight down, I'm not confident. Doug - I had thought that MARDI was fixed-focus (probably at Infinity) - so anything a few feet away would be out-of-focus, no? |
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Sep 19 2008, 01:15 AM
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#13
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
You would think that, but actually it does pretty well at short distances. See the bottom of this blog entry.
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 19 2008, 01:22 AM
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#14
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Junior Member Group: Members Posts: 29 Joined: 12-February 04 Member No.: 29 |
You would think that, but actually it does pretty well at short distances. See the bottom of this blog entry. --Emily Thanks - I had missed that BLOG entry. Mardi has an excellent depth of field. |
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Sep 19 2008, 03:33 AM
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#15
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Senior Member Group: Members Posts: 2516 Joined: 13-September 05 Member No.: 497 |
MARDI looks to be at about 7 - sort of behind where the elbow of the arm was when folded flat. FWIW, MARDI is just about exactly behind the met mast as seen from the SSI, and it's pointed 22 degrees outward from nadir. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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