Author Topic: Tianwen-1: Chinese 2020 Mars orbiter and rover  (Read 206677 times)

Online eeergo

Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #540 on: 12/01/2021 09:40 am »
CNSA-ESA communication test successfully completed (after some challenges earlier on):

https://t.co/OqvDEnjRQF?amp=1

Quote
CLEP confirms the telecommunications tests between the Chinese rover Zhurong and ESA's orbiter Mars Express is a success. Transmission was "in the blind", since Zhurong and Mars Express cannot connect between themselves, ¡a true novelty at Mars!

https://twitter.com/Kaynouky/status/1465966964447272963
-DaviD-

Offline Dalhousie

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #541 on: 12/02/2021 03:30 am »
"There is nobody who is a bigger fan of sending robots to Mars than me... But I believe firmly that the best, the most comprehensive, the most successful exploration will be done by humans" Steve Squyres

Offline Dalhousie

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #542 on: 12/07/2021 11:13 pm »
Open access paper:

Lui et al.  2021. "Geomorphic contexts and science focus of the Zhurong landing site on Mars".  Nature Astronomy


https://www.nature.com/articles/s41550-021-01519-5.pdf

ABSTRACT

As part of the Tianwen-1 mission, the Zhurong rover successfully touched down in southern Utopia Planitia on 15 May 2021. On the basis of the new sub-metre-resolution images from the High Resolution Imaging Camera on board the Tianwen-1 orbiter, we determined that the Zhurong rover landed at 109.925° E, 25.066° N at an elevation of −4,099.4 m. The landing site is near the highland–lowland boundary and multiple suspected shorelines. Under the guidance of the remote sensing survey, the Zhurong rover is travelling south for specific in situ investigation. Supported by the six payloads on board the rover, its initial key targets are rocks, rocky fields, transverse aeolian ridges and subsurface structures along the path. Extended investigation will aim at troughs and cones in the distance. A better understanding of the formation mechanisms of these targets may shed light on the historical volcanism and water/ice activities within the landing area, as well as the activities of the wind. These results may reveal the characteristics and evolution of the ancient Martian environment and advance the exploration of the habitability of ancient Mars.

Some noteworthy extended mission phase goals include:

"The short-term targets in this phase are another narrow rocky field and a trough with the maximum depth of ~10m, which are located ~1.8 km and ~2.7 km south of the landing site, respectively."

And....

"In the longer term, we expect that the rover will travel further. From the DEM data, the elevation is constantly rising as the rover travels south. The height difference between the landing site and the highest point is ~60m, and a scarp appears ~27 km away from the landing site. Many cone features are distributed near the scarp, especially clustered cones, indicating that this region may have been geologically active in the past. However, how the terrain formed remains unknown. Further research combining remote sensing data from the Tianwen-1 orbiter and in situ data from the Zhurong rover will address these questions."

« Last Edit: 12/07/2021 11:28 pm by Dalhousie »
"There is nobody who is a bigger fan of sending robots to Mars than me... But I believe firmly that the best, the most comprehensive, the most successful exploration will be done by humans" Steve Squyres

Offline hextreme

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #543 on: 01/01/2022 02:01 am »
Latest images from Tianwen-1:

Three photos taken by throw-away cameras and one from Zhurong rover

Source: CNSA website http://www.cnsa.gov.cn/n6758823/n6758838/c6813038/content.html
« Last Edit: 01/01/2022 02:02 am by hextreme »

Online eeergo

Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #544 on: 01/31/2022 02:12 pm »
Video from Tianwen's "selfie-stick" deploying and showing the S/C against the Martian curvature's background. I already lost count of how many cameras this mission carried (and possibly some are not even publicly acknowledged at this stage):

https://twitter.com/AJ_FI/status/1488030618223063042
-DaviD-

Offline Blackstar

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #545 on: 01/31/2022 02:58 pm »
Here it is on YouTube. The video is pretty neat when you get to see Mars sliding by below:




Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #546 on: 01/31/2022 04:54 pm »
Video from Tianwen's "selfie-stick" deploying and showing the S/C against the Martian curvature's background. I already lost count of how many cameras this mission carried (and possibly some are not even publicly acknowledged at this stage):

https://twitter.com/AJ_FI/status/1488030618223063042
me too by the way here's the actual camera discussed here estimation shows it is just a undisclosed payload and it is called somewhat by a guess like Mars Orbiter Status Monitoring Sensor (MOSMOS)
https://mobile.twitter.com/CNDeepSpace/status/1487977355662426114
https://mobile.twitter.com/CNDeepSpace/status/1488042267017318405

Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #547 on: 01/31/2022 05:01 pm »
Video from Tianwen's "selfie-stick" deploying and showing the S/C against the Martian curvature's background. I already lost count of how many cameras this mission carried (and possibly some are not even publicly acknowledged at this stage):

https://twitter.com/AJ_FI/status/1488030618223063042
me too by the way here's the actual camera discussed here estimation shows it is just a undisclosed payload and it is called somewhat by a guess like Mars Orbiter Status Monitoring Sensor (MOSMOS)
https://mobile.twitter.com/CNDeepSpace/status/1487977355662426114
https://mobile.twitter.com/CNDeepSpace/status/1488042267017318405
but my mind asks
1) is it multi refold redeploy or just a single deployable selfie stick
2) what it's location
3) its lifetime even canadarms need heat to be operational
4) confirmation of name
5) why can't this easy stucture be added to zhurong it lacks a robotic arm
6)final( this can only be answered  by cnsa ) we just want the list of payload and total spacecrafts on this mission
« Last Edit: 01/31/2022 05:23 pm by Chinakpradhan »

Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #548 on: 01/31/2022 05:04 pm »
https://mobile.twitter.com/chineseforces1/status/1487993204175945728
Video caption here
On 30 Jan 2022, Chinese Tianwen-1 Mars probe sent back selfie videos. It is obiter of the first Chinese Mars landing mission. The video was taken by a special "selfie" camera carried by Tianwen-1, installed at the end of the "selfie rod" to monitor and evaluate
the condition of key components.
The orbiter works closely with Zhurong rover.
The main engine, propellant tank, attitude
control engine and other components are in
good condition, as well as the five-star flag.
It also shows during the attitude adjustment, the Sun illuminates the orbiter, and the ice sheet on Mars is stunning.

As of 31 Jan 2022, Tianwen-1 has been in orbit for 557 days, about 325 million kilometers away from the earth.

The "selfie rod" is made from shape memory composite material, solar heat makes it extended to working position. The Zhurong Mars rover has worked for 255 Mars days and traveled a total of 1524 meters, also sent back photos recently. At present, Tianwen-1 mission has returned about 600GB of original scientific data. The two devices are in good condition.
« Last Edit: 01/31/2022 05:13 pm by Chinakpradhan »

Offline Phil Stooke

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #549 on: 03/10/2022 07:34 am »
https://twitter.com/TheElegant055/status/1501762584386711557

Retweet by Andrew Jones links to a map of Zhurong's travels up to early February.  The distance driven by Feb. 4th was 1537 m.

Offline plutogno

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #550 on: 03/12/2022 08:14 am »
the Chinese journal Scientia Sinica Technologica has a lot of papers on TW-1 and Zhurong in its latest issue (unfortunately, most if not all papers are in Chinese)
https://www.sciengine.com/publisher/scp/journal/SST/52/2?slug=browse

Offline Dalhousie

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #551 on: 03/12/2022 09:49 pm »
"Surface characteristics of the Zhurong Mars rover traverse at Utopia Planitia" by Ding et al.

ABSTRACT

China’s Mars rover, Zhurong, touched down on Utopia Planitia in the northern lowlands of Mars (109.925° E, 25.066° N) in May 2021, and has been conducting in situ investigations of the landing area in conjunction with the Tianwen-1 orbiter. Here we present surface properties derived from the Zhurong rover’s traverse during the first 60 sols of rover operations. Our analysis of the rover’s position from locomotion data and camera imagery over that time shows that the rover traversed 450.9 m southwards over a flat surface with mild wheel slippage. Soil parameters determined by terramechanics, which observes wheel–terrain interactions, indicate that the topsoil has high bearing strength and cohesion. The soil’s equivalent stiffness is estimated to range from 1,390 to 5,872 kPa per mN, and the internal friction angle ranges from 21° to 34° under a cohesion of 1.5 to 6 kPa. Aeolian bedforms in the area are primarily transverse aeolian ridges, indicating northeastern local wind directions. Surface rocks imaged by the rover cameras show evidence of physical weathering processes, such as wind erosion, and potential chemical weathering processes. Joint investigations utilizing the scientific payloads of the rover and the orbiter can provide insights into local aeolian and aqueous history, and the habitability evolution of the northern lowlands on Mars.

https://www.nature.com/articles/s41561-022-00905-6 (subscription required for full paper)
"There is nobody who is a bigger fan of sending robots to Mars than me... But I believe firmly that the best, the most comprehensive, the most successful exploration will be done by humans" Steve Squyres

Offline Dalhousie

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #552 on: 03/20/2022 10:14 pm »
« Last Edit: 03/21/2022 04:31 am by Dalhousie »
"There is nobody who is a bigger fan of sending robots to Mars than me... But I believe firmly that the best, the most comprehensive, the most successful exploration will be done by humans" Steve Squyres

Offline Phil Stooke

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #553 on: 03/20/2022 10:16 pm »
Great image, but it is from March 11th.

Offline Yiosie

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #554 on: 03/21/2022 04:28 am »
Not sure if this is the right thread for this, but here is confirmation that the Tianwen program will extend beyond Mars:

China plans more planetary endeavors: scientist [dated Mar. 12]

Quote from: Xinhua
After the Tianwen-1 mission, China will have a number of Tianwen series of planetary endeavors to explore the universe, according to a Chinese scientist.

Wu Weiren, the chief designer of China's lunar exploration program, said the country's deep space exploration will continue and its Mars mission will be followed by the Tianwen-2, Tianwen-3, and Tianwen-4.

<snip>

The main task of the follow-ups is to explore the asteroids in deep space and bring asteroid samples back to Earth, Wu said in a recent interview.

He also disclosed future plans including explorations of Venus and asteroids in deep space.

Offline Dalhousie

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #555 on: 03/23/2022 12:01 am »
Names Approved for Mars: 22 Feature Names Near the Tianwen-1 Landing Site

https://astrogeology.usgs.gov/news/nomenclature/names-approved-for-mars-22-feature-names-near-the-tianwen-1-landing-site

Google Mars placement for named features (kmls available in link above)

Base image THEMIS day-time IR
« Last Edit: 03/23/2022 12:11 am by Dalhousie »
"There is nobody who is a bigger fan of sending robots to Mars than me... But I believe firmly that the best, the most comprehensive, the most successful exploration will be done by humans" Steve Squyres

Offline Phil Stooke

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #556 on: 03/23/2022 06:12 am »
The Chinese are very keen on getting names around their landing sites on the Moon and Mars.  Russia was not very interested in the (Soviet) past, though they have been working on it more recently (Lunokhod 1, Luna 24, Mars 3)  They still have some unapproved names in the works for Lunokhod 2. 
« Last Edit: 03/23/2022 06:13 am by Phil Stooke »

Offline Phil Stooke

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #557 on: 03/24/2022 06:17 am »
Check out this article (in Chinese):

https://news.sina.com.cn/c/2022-03-24/doc-imcwipii0221404.shtml

Images of Zhurong from orbit recently, plus orbital views and even an image of Perseverance during its last sampling operation near the landing site.
« Last Edit: 03/24/2022 06:21 am by Phil Stooke »

Offline Star One

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #558 on: 07/23/2022 07:28 am »
Phobos seen by Tianwen-1:


Tags: Crazy 
 

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