Author Topic: Tianwen-1: Chinese 2020 Mars orbiter and rover  (Read 218219 times)

Offline Dalhousie

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #560 on: 10/08/2022 12:10 am »
From Li et al 2022 "Layered subsurface in Utopia Basin of Mars revealed by Zhurong rover radar"


Apologies in advance for any lack of civility - it's unintended

Online FutureSpaceTourist

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #561 on: 11/24/2022 06:49 am »
https://twitter.com/aj_fi/status/1595684429715972096

Quote
Zhurong, China's Mars rover, entered hibernation on May 18 in Utopia Planitia, with the onset of winter in the northern hemisphere. But Zhurong could become active again soon with the onset of Spring and improving solar light conditions (Spring equinox occurring on Dec. 26.).

Offline AstroWare

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #562 on: 01/08/2023 12:25 am »
Should I start getting worried, or?

Some quotes:

"Scientists are still waiting for a signal from China’s Mars rover, which was expected to wake from hibernation last month, according to two sources familiar with the country’s Mars exploration programme
...
The Post independently confirmed with two sources on Thursday that the rover should have resumed running by now, but no contact has been established
...
It was predicted that Zhurong would resume operations around December 26 as the planet’s northern hemisphere entered its spring season and environmental conditions improved.
...
According to Jia Yang, deputy chief designer of the Tianwen-1 probe system, the rover is designed to wake up automatically when two conditions are met: its power level must hit 140 watts and the temperature of key components, batteries included, must exceed minus 15 degrees Celsius (5 degrees Fahrenheit)."



https://www.scmp.com/news/china/science/article/3205894/chinese-scientists-scramble-wake-mars-rover-plan-send-probe-investigate-sources-say

Offline Timothytyy

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #563 on: 01/09/2023 09:47 am »
https://twitter.com/CNSpaceflight/status/1612387084769325056
Quote
It's very concerning that CNSA has had no updates of Tianwen-1/Zhurong for quite a while

Offline deadman1204

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #564 on: 01/09/2023 02:33 pm »
I thought I read something awhile ago that some people thought it was dead before the "may hibernation". There was a gap in info about that before that announcement.

Its too bad China has too much propaganda wrapped up into everything space related, so that mission people cannot talk about whats happening without fear of retribution.
« Last Edit: 01/09/2023 02:34 pm by deadman1204 »

Offline Blackstar

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #565 on: 01/09/2023 07:16 pm »
Should I start getting worried, or?

Some quotes:

"Scientists are still waiting for a signal from Chinaís Mars rover, which was expected to wake from hibernation last month, according to two sources familiar with the countryís Mars exploration programme
...
The Post independently confirmed with two sources on Thursday that the rover should have resumed running by now, but no contact has been established
...
It was predicted that Zhurong would resume operations around December 26 as the planetís northern hemisphere entered its spring season and environmental conditions improved.
...
According to Jia Yang, deputy chief designer of the Tianwen-1 probe system, the rover is designed to wake up automatically when two conditions are met: its power level must hit 140 watts and the temperature of key components, batteries included, must exceed minus 15 degrees Celsius (5 degrees Fahrenheit)."
https://www.scmp.com/news/china/science/article/3205894/chinese-scientists-scramble-wake-mars-rover-plan-send-probe-investigate-sources-say


Did they ever state a design life for the mission? NASA's baseline for Mars missions is usually one Mars year (about 2 Earth years). Was China aiming for something similar?

Offline Dalhousie

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #566 on: 01/10/2023 11:35 pm »
Should I start getting worried, or?

Some quotes:

"Scientists are still waiting for a signal from Chinaís Mars rover, which was expected to wake from hibernation last month, according to two sources familiar with the countryís Mars exploration programme
...
The Post independently confirmed with two sources on Thursday that the rover should have resumed running by now, but no contact has been established
...
It was predicted that Zhurong would resume operations around December 26 as the planetís northern hemisphere entered its spring season and environmental conditions improved.
...
According to Jia Yang, deputy chief designer of the Tianwen-1 probe system, the rover is designed to wake up automatically when two conditions are met: its power level must hit 140 watts and the temperature of key components, batteries included, must exceed minus 15 degrees Celsius (5 degrees Fahrenheit)."
https://www.scmp.com/news/china/science/article/3205894/chinese-scientists-scramble-wake-mars-rover-plan-send-probe-investigate-sources-say


Did they ever state a design life for the mission? NASA's baseline for Mars missions is usually one Mars year (about 2 Earth years). Was China aiming for something similar?

Nominally 90 days - much like Spirit and Opportunity.  Assuming the mission effectively ended when hibernation ended it achieved four times this.
« Last Edit: 01/10/2023 11:45 pm by Dalhousie »
Apologies in advance for any lack of civility - it's unintended

Offline Dalhousie

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #567 on: 01/10/2023 11:42 pm »
I thought I read something awhile ago that some people thought it was dead before the "may hibernation". There was a gap in info about that before that announcement.

Last reported moves were May 5th.  Updates typically occurred monthly.  Winter shutdown was planned.  So no reason that I know to think something had gone wrong prior to hibernation being announced May 18th.

Quote
Its too bad China has too much propaganda wrapped up into everything space related, so that mission people cannot talk about whats happening without fear of retribution.

Those are assumptions on your part.
« Last Edit: 01/10/2023 11:46 pm by Dalhousie »
Apologies in advance for any lack of civility - it's unintended

Offline zubenelgenubi

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Re: Tianwen-1: Chinese 2020 Mars orbiter and rover
« Reply #568 on: 01/11/2023 12:07 am »
Its too bad China has too much propaganda wrapped up into everything space related, so that mission people cannot talk about whats happening without fear of retribution.
Those are assumptions on your part.
Member:
Given your modus operandi on this forum, your unstated (here) counter-assumption about the freedom of speech of PRC subjects is equally glaring.

Moderator:
We should wait for more news and/or expert observations of functionality (or not), even if it's based on a leak from inside a totalitarian country, before publicly declaring Tianwen-1 is "alive" or "dead."

Neither of you has a reputation here for forum civility.
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