New lander version split in two, Perseverance Mars samples delayed until 2033

In order to bring the samples collected by the Perseverance rover back to Earth, NASA has plans to launch new landers, rovers and Mars ascent vehicles to connect the samples. But after some thought, NASA and ESA decided to revise the lander design to reduce the risk of failure and postpone the sample return mission to 2033.

NASA’s Perseverance rover is wandering around the Jezero crater and is expected to collect dozens of surface samples during its work period, waiting for the SRL lander (Sample Retrieval Lander) to take the Mars Ascent Vehicle (Mars Ascent Vehicle) in a few years. , MAV) arrived with another fetch rover, took these samples and handed them over to MAV, which then launched from the surface of Mars into Mars orbit, transferred the samples to the ERO orbiter, and finally brought the material back to Earth in 2031.

However, after further analysis, since a single lander needs a larger heat shield protection, the diameter is estimated to be 5.4 meters, which in turn requires a larger fairing to fit into the lander; in addition, whether the large lander can enter smoothly , descent and landing on Mars “unproven”, so NASA and ESA decided to change the design and split the SRL lander into two, one to carry the rover and the other to carry the MAV, so that the dual lander can be designed to carry the same The same system on Perseverance and Curiosity.

After the design change, the launch of the dual lander will be postponed to 2028, the launch of the ERO orbiter will be postponed from 2026 to 2027, and the Mars sample return mission will be postponed to 2033. NASA has yet to decide who will build the SRL2 lander that will carry the rover, which is expected to be announced in June.

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