On December 14, China's Chang'e-3 lander successfully landed near the Moon Bay in Hong Kong and released the "Yu Rabbit" lunar rover. NASA sees this event as an excellent opportunity to conduct research on the thin atmosphere of the moon, and uses the four satellites currently on the lunar orbit to detect dust generated during the landing of the No. 3 landing.
Let's first understand the technology of China's landing on the moon and the third.
At 21:12 on December 14, 2013, the Luna 3 lunar probe will bring the Yutu to land on the moon. If successful, this will be the first time that China has achieved a soft landing on the moon, and the Chinese people's desire to go to the moon has finally come to a dream. In this happy moment, let us take a look at the advanced technology of the Chinese-designed lunar rover "Yutu".
In the signing ceremony of the first lunar rover in China, which was launched on September 25, the “Yutu†stood out among the names of 53,091, carrying the good hopes of the Chinese people all over the world and carrying out this great task.
How did China's moon landing develop to the present?
On October 24, 2007, the Chang'e-1 lunar probe was launched at the Xichang Satellite Launch Center and entered the orbit around the moon on November 5 of that year. At first, the design life of Chang'e-1 was one year, but it has been working hard until March 1, 2009. After completing the mission of establishing a complete and accurate high-resolution full-surface lunar map, it under the control of ground personnel, it slammed into the lunar rich sea at 52.36 degrees east longitude and 1.50 degrees south latitude, and slept on the moon.
The main work of Chang'e II is to use it as an experiment, to verify some of the core equipment of new technologies, to reduce the risk of future projects, and to deepen the scientific exploration of the moon. It was launched at the Xichang Satellite Launch Center on October 1, 2012. After 26 months of work, it began a new mission - to fly into deep space and explore the universe. As of November 26, 2013, it has been more than 60 million kilometers from the Earth, hoping it will successfully complete its mission.
The No. 3 was launched on December 2, 2013 at the Xichang Satellite Launch Center. Its task is to smash the second stage of “aroundâ€, “fall†and “back†in the third phase of the project: “fallâ€. The Chang'e III consists of two parts: the lander and the "Yutu" lunar rover, and created several "firsts", when it carries the "Yutu" lunar rover, carrying out the task of China's first lunar soft landing.
The design life of this "Yu Rabbit" is 90 days. It is mainly composed of 8 subsystems of mobile, navigation control, power supply, thermal control, structure and mechanism, integrated electronics, measurement and control digital transmission and payload.
Mobile sub-system: adopts wheeled and rocker suspension schemes, with forward and reverse, in-situ steering, inter-turn steering, 20 degree climbing, 20 cm obstacle resistance; navigation control subsystem: carrying a camera and a large number of sensors, After knowing the surrounding environment, posture, position and other information, the speed, planning path, emergency obstacle avoidance, control movement, and monitoring safety can be determined through the ground or the vehicle interior; the power subsystem: two solar arrays, one The group consists of a lithium-ion battery pack, a sleep wake-up module, and a power controller, and uses solar energy to supply power to the on-board instruments and equipment.
Thermal control subsystem: using thermal fluid circuit, thermal insulation components, heat sink design, electric heater, isotope heat source, the temperature of the cabin can be controlled between +55 °C and -20 °C during the working of the lunar rover; structure and mechanism System: It consists of the structure and the mechanical part of the solar wing, the mast and the mechanical arm. It mainly provides the working platform for various instruments, equipment and payloads. The integrated electronic subsystem: integrates the central computer, drive module and processing module. Real-time operating system, realizes functions such as telemetry and remote control, data management, navigation control, mobile and organization drive control; measurement and control number transmission system: ensuring communication between the lunar rover and the earth of 384,000 kilometers and communication with the lander; payload Sub-system: Scientific detection instruments equipped with lunar rover, including panoramic camera, infrared imaging spectrometer, moon-receiving radar, particle-excited X-ray spectrometer, etc.
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