After learning the truth, people are glad that Yang Liwei didn't stay in space for a long time, which deformed the spacecraft and ensured Yang Liwei's personal safety in the cabin within a safe range. While the mystery is solved, we have more respect and worship for Yang Liwei's contribution to the space industry.
Yang Liwei is a hero worshipped by the people all over the country and the first China man to go into space, which makes our people proud. As the first person to eat crabs, he shoulders a sacred mission, but also bears many unknown risks. As future generations, we admire our heroes. Besides paying attention to Yang Liwei's aura, we should also pay attention to the hardships behind his aura, as well as his own pain, pressure and risks.
China's space industry started late, and countries with advanced space technology are very conservative in technology and are unwilling to share space technology with us. All kinds of reasons add up to make our space technology research and development have many difficulties. We are proud of the fact that all the difficulties are difficult for the intelligent and industrious people of China. We made great efforts, gathered talents, and finally achieved overtaking in corners. We have made outstanding achievements in the space field and become a space power.
Hero Yang Liwei entered outer space for the first time on the Shenzhou 5 spacecraft carried by the Long March II F rocket on June 5438+1October 65438+May 2003, which made great contributions to the development of China's space industry.
In our opinion, the exciting and proud space travel is not smooth for the hero Yang Liwei. On the contrary, it is full of many unknown risks and tensions. According to Yang Liwei's own account, when he was in outer space, he heard the sound of "knocking on the window". Due to the limited conditions at that time, he couldn't go to see it. Because of the sound of "knocking on the window", his heart became tense.
After safely and smoothly returning to the ground, Yang Liwei heard the "knocking on the window" and reported it to the space staff. Although everyone wants to know what the "knocking on the window" is all about, we can't know the truth because of the technology and conditions at that time and the blockade of foreign space technology.
The researchers simulated the outer space environment, but did not "knock on the window". Faced with unexplained puzzles, some amateurs began to imagine freely. Some people think that this is a greeting from "aliens", while others think that this is a collision of "space junk". After Yang Liwei, there were several manned space flights. These astronauts said that they also heard the sound of "knocking on the window" in space.
Although the puzzle has not been solved, our researchers have further improved the safety performance of the spacecraft. This move is to ensure the safety of astronauts in outer space, let them travel smoothly and then return safely.
With the continuous development of space technology, our space strength is gradually increasing. "Knocking on the window", a puzzle that has puzzled astronauts 16 years, has finally been solved. This is not a visit by "aliens", nor is it that "space junk" collided with the spacecraft, but the temperature and air pressure difference inside and outside the spacecraft caused the spacecraft to be squeezed and deformed, and in the process of deformation, a sound similar to "knocking on the window" was issued.
Such deformation is a great test for the structure and safety of spacecraft. If the critical deformation value is exceeded, the spacecraft will be damaged or even destroyed. If this happens, the consequences will be unimaginable and the life safety of astronauts will not be guaranteed.
China has always adhered to the people-oriented principle and always put safety first in many scientific research fields. It is precisely this idea, coupled with the careful and earnest research personnel, that astronauts can safely enter outer space to perform tasks; China's space industry started late, and it took only a few decades to walk in the forefront of space science and technology in the world.
While paying tribute and applauding to heroes, we should also understand their contributions behind their honor, which is the focus worthy of our attention and research.