China News Service, Beijing, July 14 (Guo Chaokai) A reporter learned from the China Academy of Space Technology on the 14th that recently, the Martian probe "Tianwen 1" developed by the institute has arrived at the Wenchang space launch site. China's first Mars exploration mission is about to start.
The National Aeronautics and Space Administration of China announced the name and logo of China's first Mars exploration mission at the launch ceremony of "China Aerospace Day" on April 24. The Chinese planetary exploration mission was named "Tianwen" series, the first Mars exploration mission was named "Tianwen-1", and the subsequent planetary missions were numbered sequentially.
2020 is the window period for Mars exploration activities. According to the plan, this year China will use the Long March V launch vehicle to launch the Mars rover, realize the "three steps" of Mars orbiting, landing and patrol detection at one time, carry out global and comprehensive exploration of Mars, and conduct detailed patrols on key areas on the surface of Mars. Survey.
It is understood that the Chinese Mars rover is divided into two parts, the surround and the landing patrol, developed by China Aerospace Science and Technology Corporation. The rocket launches the detector to the ground fire transfer orbit, then with the support of the ground measurement and control system, through multiple orbit maneuvers and midway corrections, the brake is applied at the near fire point, enters the ring fire elliptical orbit, and runs to the selected entry window , The detector will perform derailment control and release the landing patrol.
After the landing patrol enters the Martian atmosphere, it adopts aerodynamic shape, parachute, reverse thrust engine and other multi-stage deceleration and landing leg cushioning. After the separation of the rover (namely the patrol device) and the landing platform, regional patrol detection will be carried out. The surround will provide relay communication links for the rover and carry out scientific exploration around.
In 2020, in addition to China's "Tianwen-1", there will be the United States' Perseverance rover and the UAE's "Hope" Mars probe. The ExoMars rover, which was originally scheduled for "fire detection" this year, has been announced to be postponed to 2022. (Finish)