China’s Mars sample return mission aims to collect samples from the Red Planet and deliver them to Earth in 2031, or two years ahead of a NASA and ESA joint mission.
Sun presented the mission profile at a deep space exploration technology forum, also part of a seminar series marking the 120th anniversary of Nanjing University.
The ascent vehicle will consist of two stages, using either solid or liquid propulsion, and will be required to reach a speed of 4.5 kilometers per second, according to the presentation. Sun added that the Tianwen-1 orbiter will conduct an aerobraking test in Mars orbit later this year as part of the sample return mission preparation.
Another noted aspect will be that the landing would take place around the autumnal equinox in the northern hemisphere, in which the mission will likely land. Related difficulties include potential sand storms and low solar energy availability.
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