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Nasa announces new rover mission to Mars in 2020
rlorenz
post May 24 2019, 12:13 AM
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QUOTE (SpaceListener @ Mar 31 2019, 12:33 PM) *
Hope for a success laboratory! The helicopter can fly in Titan, Venus (I don't think it is feasible for such high temperature), and what else planet or moon the MHS can fly?


I was at a talk at the Vertical Lift Society (formerly American Helicopter Society) last week, where the speaker (from Aerovironment) noted that about 60% of the MHS battery energy is expended keeping the vehicle warm overnight on Mars.

On Titan, such a small vehicle would quickly freeze, and there is very little sunlight to drive the solar panel. Dragonfly relies on the 'waste' heat from an MMRTG to stay warm, as well as its electrical power to charge the battery for flight.
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PhilipTerryGraha...
post May 27 2019, 07:03 PM
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Any news on how / when the rover will be getting it's name? I haven't seen anything since the press release that PaulH51 mentioned earlier in this thread, either. I've made some vector versions of the original JPL insignia, the grey-and-white JPL insignia, and the NASA insignia for Mars 2020, if anybody's interested!



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mcaplinger
post May 27 2019, 08:29 PM
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QUOTE (PhilipTerryGraham @ May 27 2019, 11:03 AM) *
Any news on how / when the rover will be getting it's [sic] name?

Good question. The selected organization was supposed to conduct a contest during the 2019 spring academic semester and submit the top 25 names to NASA by 31 July 2019, but given that that semester is nearly over and the selected organization hasn't even been announced AFAIK, it seems like this is behind schedule.

https://nspires.nasaprs.com/external/viewre...6K%20Amend1.pdf


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elakdawalla
post May 28 2019, 06:28 PM
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An email sent to the get info email for the solicitation returns an automated response indicating that the contest will "likely begin in the summer/fall of 2019." I don't know who was selected.


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mcaplinger
post Jun 1 2019, 03:30 AM
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"NASA's Mars 2020 Gets HD Eyes" -- Mastcam-Z cameras installed on the remote sensing mast: https://www.jpl.nasa.gov/news/news.php?feature=7414

Whoever wrote this managed to not mention the company that actually built the cameras. mad.gif


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scalbers
post Jun 1 2019, 10:30 PM
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A few more tidbits are in this December 2018 article: http://www.marsdaily.com/reports/Mars_2020...at_ASU_999.html, such as 2 megapixel resolution.


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bobik
post Jun 12 2019, 11:50 AM
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Today SuperCam leaves Toulouse for Los Angeles. wheel.gif wheel.gif wheel.gif
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mcaplinger
post Jun 13 2019, 03:11 PM
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QUOTE (scalbers @ Jun 1 2019, 02:30 PM) *
A few more tidbits... such as 2 megapixel resolution.

The electronics for MCZ are essentially identical to those of the MSL Mastcams, the major difference being that apart from the adjustable focal length, the optics fill the entire 1600x1200 active area of the sensor, rather than having vignetting at the corners which effectively reduces the area of the MSL Mastcams to something like 1400x1200.


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mcaplinger
post Jun 26 2019, 02:57 PM
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QUOTE (PhilipTerryGraham @ May 27 2019, 11:03 AM) *
Any news on how / when the rover will be getting it's name?

https://www.nasa.gov/feature/nasa-selects-p...st-seeks-judges

QUOTE
Battelle Education, of Columbus, Ohio, and Future Engineers, of Burbank, California, will collaborate with NASA on the Mars 2020 “Name the Rover” contest, which will be open to students in Fall 2019.



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mcaplinger
post Aug 28 2019, 09:49 PM
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QUOTE
NASA invites U.S. students to submit essays to name NASA's next Mars rover. Kindergarten through 12th grade students have until Nov. 1, 2019 to submit their name.


https://mars.nasa.gov/mars2020/participate/name-the-rover/


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PaulH51
post Aug 28 2019, 10:46 PM
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A rather nice image of the 2020 Helicopter being installed on the rover's belly pan. Details in this news release
Attached Image
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Floyd
post Sep 13 2019, 10:51 AM
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Article on getting Mars 2020 center of gravity balanced Link

I'm a bit surprised that it took attaching 44 pounds of tungsten weights. I assume these weight are permanent as they are to balance the craft for reentry etc. There are a lot of interesting instrument that weigh much less than 44 pounds that scientist would love to add to the rover.

I assume in the design of the rover, parts are placed to try and get the center of gravity right. Maybe someone can explain why the position of components can't be re positioned slightly, but instead tungsten weight are added. On previous missions, I thought instruments or extra cameras were eliminated because 2 extra pounds broke the weight budget. 44 pounds seem like a huge number for fixing the center of gravity????


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climber
post Sep 13 2019, 11:09 AM
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The ones used for Curiosity where ejected during EDL way before landing


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centsworth_II
post Sep 13 2019, 12:07 PM
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QUOTE (Floyd @ Sep 13 2019, 06:51 AM) *
...There are a lot of interesting instrument that weigh much less than 44 pounds that scientist would love to add to the rover...

There was this: NASA Announces Winning Ideas for Mars Balance Mass Challenge February 20, 2015
QUOTE
"A member of the public with an idea to study the Martian atmosphere and a team with a way to study Martian weather are the winners of NASA's Mars Balance Mass Challenge.... ....The Mars Balance Mass Challenge, announced in September 2014 at the World Maker Faire in New York City, sought design ideas for small science and technology payloads that could potentially provide dual purpose as ejectable balance masses on spacecraft entering the Martian atmosphere. The payloads would serve two roles: perform scientific or technology functions that help us learn more about the Red Planet, and provide the necessary weight to balance planetary landers..."


It looks like although there were winning ideas, they were not used this time around.

My basic (Wikipedia) understanding is that the masses are there to actually unbalance the craft so as it enters the Mars atmosphere it tilts to provide aerodynamic lift. Then before the path to the surface is to become more vertical, under parachute, the masses are ejected.
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nogal
post Sep 13 2019, 02:22 PM
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QUOTE (climber @ Sep 13 2019, 12:09 PM) *
The ones used for Curiosity where ejected during EDL way before landing

And the ground impact marks of the two large (75kg) masses were imaged ... The masses were ejected before EDL and were used as balance masses during the cruise phase. The image's description is quite interesting, including the cruise stage related information.
There were other six smaller (25kg) masses ejected at much lower altitude, during EDL, whose impacts were also imaged. These were used to offset the centre of gravity during descent.
See also https://static.uahirise.org/images/2012/det...BM-2H-scale.jpg
and Possible Impacts from MSL Hardware including the related closeup image

Fernando
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