When people are concerned about how chang'e-3 is successfully launched on the long march 3B carrier rocket, they should also pay attention to the
Micro Motor on the lander, which plays a vital role. Under the embargo of rocket components imposed on China by developed countries for many years, chang'e-3 can finally embark on the journey to the moon, which also witnesses the outstanding spirit of independent innovation of mainland scientists under difficult conditions .
Xiong Qunli, deputy commander in chief of the lunar exploration project and general manager of China Electronics Technology Group, for example, said that because there was no atmosphere on the moon, chang'e-3 could not land by parachute, and could only rely on the 7500 Niu variable thrust engine on the lander to complete a series of actions such as deceleration and hovering. The choice of thrust is realized by a small cylindrical motor (Shunchang motor company specializes in making all kinds of DC motors with outer diameter of 12-37mm). Xiong Qunli said that there are more than 30 kinds of motors on the chang'e-3 probe (the steering motor is commonly used on model aircraft with high speed and large torque), which are distributed in the antenna, battery array, imaging system, mast system, mechanical arm system, detection and sampling system and other subsystems. Every link should not be wrong, otherwise, it will be directly related to the lunar exploration mission Whether it can be a complete success.
"If it wasn't for the developed countries' embargo on many components, China could import the whole set of measurement and control system. Including some important parts and components of the chang'e-3 TT & C system In the view of Shi Jinhao, an expert in China's electronic components, the motor components of European and American countries in the field of weapons and aerospace have been closed to China. "Especially in space exploration, the motor of antenna deployment is forbidden."
Shi Jinhao said bluntly, "this forces China to engage in independent R & D on its own." He said that in the face of pressure, the scientific research personnel of China Electronics Technology Group continue to break through the limit and provide support for many technologies of Chang'e to the moon. Facts have also proved that the "blockade" of developed countries failed to block the smooth launch of chang'e-3.
