According to official data, as of May 5, 2022, the "tianwen-1" orbiter has been in orbit for 651 days, 240 million kilometers away from the earth, and the "zhurong" Mars rover has worked on the surface of Mars for 347 Mars days, traveling a total of 1921 meters. The two devices have accumulated about 940gb of original scientific data and operate normally** During the ring fire period, all seven payloads carried by tianwen-1 were powered on to continue the global remote sensing exploration of Mars.
The above picture shows the "seasonal slope pattern" on the wall of Mars triolet crater, photographed by a high-resolution camera on April 17, 2022, with a resolution of about 0.8m/pixel**
The above image is the local geomorphic image of Martian sailor Valley taken by the medium resolution camera on April 1, 2022, with a resolution of about 65 meters / pixel**
On August 15, 2021, the "zhurong" Mars rover completed the established 90 Mars day patrol and exploration mission, and continued to carry out the expanded patrol and exploration mission.
The above picture is the image of rocks distributed near the impact crater on the surface of Mars taken by the navigation Terrain Camera on April 10, 2022 (323rd Mars day after landing)**
At present, the area where the "zhurong" Mars rover is located has entered winter. Similar to our earth, the solar illumination altitude angle has decreased and the illumination duration has been shortened.
According to the measurement, the local maximum temperature at noon has dropped to - 20 ℃ and the ambient temperature at night is below - 100 ℃**
In addition, due to the presence of dust weather, the light intensity is further weakened, affecting the power generation capacity of the rover solar wing battery array.
Recently, the engineering team has adopted rotating the solar wing to adjust the illumination angle, reduce the daily work items and hours, and achieve energy balance**
The rotation cycle of Mars is close to that of the earth. A Mars day is only about 40 minutes longer than that of the earth. At the same time, the inclination angle of Mars's rotation axis is 25.19 °, which is also very close to the earth. Therefore, like the earth, Mars has the alternation of day and night and the change of four seasons.
The revolution period of Mars is about 687 days, that is, one Martian year is equivalent to 1.9 Earth years, which means that the average duration of each season of Mars is about twice that of earth**
When zhurong first landed last year, when Mars moved near the aphelion, the direct point of the sun was in the northern hemisphere. At that time, the northern hemisphere had just entered summer and the southern hemisphere had just entered winter.
Now, nearly a year after landing on Mars, Mars is running near the perihelion, the direct point of the sun is in the southern hemisphere, and the Northern Hemisphere where zhurong is located is entering winter and the southern hemisphere is entering summer.
In the next two months, the direct solar point will continue to move to the south of Mars and reach near the Tropic of cancer in mid and late July. At that time, the northern hemisphere of Mars will enter the coldest season of the year.
In order to safely survive extreme weather such as Martian winter and dust storm, the "zhurong" rover has designed working modes such as autonomous sleep. After the energy is reduced to a certain extent, it will automatically enter the sleep mode, and then return to the normal working mode after the environmental conditions gradually improve
On May 19, 2021 (the 5th day after landing), the surface of the rover was free of dust
On January 22, 2022 (the 247th Martian day after landing), there was an obvious dust cover on the surface of the rover
On January 22, 2022, in the high latitude region of the northern hemisphere, the image center is located at 30.7 ° E and 74.0 ° n
On February 10, 2022, in the high latitudes of the northern hemisphere, the central position of the image was 37.8 ° east longitude and 72.9 ° north latitude. Local dust storms occurred, and the ground features were difficult to distinguish
On March 24, 2021, "zhurong" landed in the inspection area
On January 30, 2022, "zhurong" landed in the inspection area
