The mission's chief designer says the rover has most likely been hampered by dust.
Now, mission chief designer Zhang Rongqiao told China Central Television this week that the team believes Zhurong has not woken up because a higher-than-expected amount of dust has accumulated on the rover's solar panels. This means sunlight received by Zhurong has not been sufficient for it to wake up.has led to a decrease in power generation capacity, which is not high enough to wake it up," Zhang said.
The threshold for Zhurong to resume activities is a temperature of greater than 5 degrees Fahrenheit and energy generation of greater than 140 watts. Zhang said that if dust levels on the panels were 30% greater than expected, then Zhurong would require the strongest sunlight levels on Mars to reactivate. A level of 40% or more above expected levels would mean the rover will not be able to wake up.
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