Tag Archives: Mars 2020 rover

Jezero Crater: The landing site for the Mars 2020 rover

Jezero Crater delta
Jezero Crater delta

At this week’s 50th Lunar and Planetary Science Conference in Texas, there were many papers detailing the geological, topographical, chemical, meteorology and biological circumstances at the landing sites for the 2020 Martian rovers, Jezero Crater for the U.S.’s Mars 2020 and Oxia Planum for Europe’s Rosalind Franklin.

Most of these papers are a bit too esoteric for the general public (though if you like to delve into this stuff like I do, go to the conference program and search for “Jezero” and “Oxia” and you can delve to your heart’s content).

Oxia Planum drainages

These papers do make it possible to understand why each site was chosen. I have already done this analysis for Rosalind Franklin, which you can read here and here. Oxia Planum is in the transition between the southern highlands and the northern lowlands (where an intermittent ocean might have once existed). Here can be found many shoreline features. In fact, one of the papers at this week’s conference mapped [pdf] the drainage patterns surrounding the landing ellipse, including the water catchment areas, as shown by the figure from that paper on the right.

With this post I want to focus on Jezero Crater, the Mars 2020 landing site. The image above shows the crater’s most interesting feature, an impressive delta of material that apparently flowed out of the break in the western wall of the crater.

This image however does not tell us much about where exactly the rover will land, or go. To do that, we must zoom out a bit.
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NASA completes final parachute test for 2020 Mars rover mission

NASA has completed the third and final parachute test for its as yet unnamed 2020 Mars rover mission.

Three separate test launches (one Oct. 9, 2017, April 20, 2018, and Sept. 7, 2018) determined which parachute design would be used for the Mars 2020 mission. In 2012, a similar parachute concept was used for the Curiosity rover mission.

For this test, NASA said the parachute, which was made of nylon, Kevlar and Technora fibers, was packed into a “small drum-sized bag” before being launched to an altitude of about 23 miles (37 kilometers) and a speed of about Mach 1.8. Then, within less than a half-second, the 180-pound parachute was deployed and fully inflated with a volume of “a large house.”

Though doing engineering tests to prove your concept always makes sense, didn’t NASA do this for Curiosity, which then proved its parachute concept further by actually landing on Mars successfully? The 2020 rover is supposed to be saving money by using the Curiosity design. Why were these tests necessary?


NASA will fly a test drone on 2020 Mars rover mission

NASA today announced that a test drone, dubbed Mars Helicopter, will be flown on the 2020 Mars rover mission.

Once the rover is on the planet’s surface, a suitable location will be found to deploy the helicopter down from the vehicle and place it onto the ground. The rover then will be driven away from the helicopter to a safe distance from which it will relay commands. After its batteries are charged and a myriad of tests are performed, controllers on Earth will command the Mars Helicopter to take its first autonomous flight into history.

“We don’t have a pilot and Earth will be several light minutes away, so there is no way to joystick this mission in real time,” said Aung. “Instead, we have an autonomous capability that will be able to receive and interpret commands from the ground, and then fly the mission on its own.”

The full 30-day flight test campaign will include up to five flights of incrementally farther flight distances, up to a few hundred meters, and longer durations as long as 90 seconds, over a period. On its first flight, the helicopter will make a short vertical climb to 10 feet (3 meters), where it will hover for about 30 seconds.

As a technology demonstration, the Mars Helicopter is considered a high-risk, high-reward project. If it does not work, the Mars 2020 mission will not be impacted. If it does work, helicopters may have a real future as low-flying scouts and aerial vehicles to access locations not reachable by ground travel.

The only word I can think of to express my thoughts on this is “Cool!”