the journey from China to Mars – fr

the journey from China to Mars – fr

Capture the orbit of400 km by 180,000 km Parking orbit280 km in 59,000 km Scientific orbit of265 km in 15,000 km Final scientific orbit of265 km by 12,000 km

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Posted on May 18, 2021

Chinese rover Zhu Rong makes historic landing on the Red Planet.

July 23, 2020
Rocket takes off.

July 23, 2020
The released Tianwen-1 probe begins a seven-month journey covering nearly 500 million km.

Tianwen-1 performs a series of maneuvers as it moves away from Earth’s orbit and approaches Mars. These maneuvers, or “orbital corrections”, allow the spacecraft to maintain its course.

Aug 2, 2020
First orbital correction (3 million km from Earth).

September 20, 2020
Second orbital correction (19 million km from Earth).

October 9, 2020
Maneuver in deep space (29.4 million km from Earth).

October 28, 2020
Third orbital correction (44 million km from Earth).

February 5, 2021
Fourth orbital correction (184 million km from Earth and 1.1 million km from Mars).

February 10, 2021
The spacecraft enters orbit on Mars by performing an insertion maneuver.

February 24, 2021
After making several orbital corrections, the probe enters park orbit, monitoring potential landing sites.

The Long March 5 rocket, China’s largest and most powerful launcher, uses kerosene / liquid oxygen engines.

Rocket debris falls into the ocean.

China is developing reusable launcher technology, aimed at reducing mission costs.

The mission kicks off in July to take advantage of the close alignment of Earth and Mars, which allows for faster travel.

China, the United States and the United Arab Emirates each launched 11-day Mars missions in July 2020. Hope, the UAE’s first Mars mission, swung into orbit on February 9, 2021 to study its weather and its atmosphere. NASA’s science rover, Perseverance, landed on the Red Planet on February 18. On April 19, NASA’s Ingenuity helicopter, carried in the belly of Perseverance, made its historic flight – a first on another planet.

Nearly 50 attempts have been made to visit Mars and more than half have failed. The Soviet spacecraft Mars 3 made the first controlled landing in December 1971, but failed 110 seconds later. In 2011, China made its first attempt to reach Mars with a small Yinghuo orbiter, or Firefly, relying on the Russian Fobos-Grunt mission. But a failed launch means it never left Earth orbit. The United States has successfully landed on Mars nine times, the first nearly 45 years ago. Eight spaceships now operate around Mars: three Americans, two Europeans and one each for China, India and the United Arab Emirates. The United States has operated five rovers on Mars.

Tianwen, which translates to “Heavenly Matters”, takes its name from the masterpiece of one of the greatest Chinese poets Qu Yuan (340-278 BC). The only Chinese spacecraft to have traveled further than Tianwen-1 was the Chang’e 2 lunar probe, which went beyond Mars after successfully orbiting the moon in 2010. Contact with it has been lost in 2014.

China and Russia have agreed to build an international moon research station. NASA says it wants to build a space outpost in lunar orbit. These lunar stations could potentially be used as crossing points for human missions to Mars.

The closest and furthest points in Tianwen-1’s orbit from the Martian surface.

The rover is expected to spend three months exploring the surface, returning photos and data from the site. The Tianwen-1 probe remains in orbit and will act as a relay satellite, sending signals to and from Earth.

May 15, 2021
Soft landing at a pre-selected site in the plain of Utopia Planitia.

The rover’s landing on Mars was a big test for the Chinese space program. Zhu Rong – named after the mythical Chinese god of fire and war – successfully landed after “nine minutes of terror”: NASA’s description of the communication failure during which engineers on Earth have no controlling or monitoring the rover due to radio signal delay.

Protected by a heat shield, the Chinese landing craft on Mars carrying the rover had to detach from the orbiter 70 km above the surface, before rushing towards the surface at a speed of nearly 5 km per second. The descent was slowed with the aid of a parachute and rocket thrusters.

If Zhu Rong succeeds in his mission to collect and return information on the Martian surface for 90 days, it would make China the first country to perform an orbit, landing and roaming operation on its first mission to Mars. .

After three months in orbit of Mars, the Chinese unmanned spacecraft Tianwen-1 successfully deployed its Zhu Rong rover to the Red Planet on May 15. The rover’s mission is to explore the landscape of Mars, to study its surface and its atmosphere.

The landing was another milestone in China’s space exploration program. Only the United States managed to land and operate a spacecraft on Earth’s neighbor.

The Tianwen-1 is one of a series of spacecraft that China plans to launch to explore other planets in the solar system.

Late last year, China’s Chang’e 5 robotic spacecraft landed on the moon and returned to Earth with lunar samples.

May 15, 2021
Soft landing at a pre-selected site in the plain of Utopia Planitia.


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