The content of this article comes from the Internet, if it is inconsistent with the actual situation or there is infringement, please contact to delete. This article is only published in today's headlines, please do not move.
The universe is a realm of infinite reverie, an eternal dream of human exploration. The number of planets, the existence of aliens, these unsolved mysteries fill the vastness of the universe. Every spacecraft launch is a wonderful scientific and technological feast, whether it is the engineers who control the cabin or the audience sitting in front of the TV to watch, they are immersed in the excitement and mystery of this moment. However, one question has always puzzled many space exploration enthusiasts: Why did the spacecraft travel through the atmosphere at such high speeds when returning to Earth? Why not slowly float back to Earth and reduce the wear and tear of the spacecraft? The scientific mysteries in this may not be well understood.
First, there are thoughtful scientific reasons for getting a spacecraft to travel through the atmosphere at high speed and return to Earth in a burning state. The key term for this process is called "reentry." On re-entry, the spacecraft will be subjected to resistance from the Earth's atmosphere, which will gradually slow down the spacecraft and rub against the atmosphere, causing high temperature combustion. Despite the dangers, this re-entry process is actually very helpful for the landing of the spacecraft.
Why? First, the high-speed passage through the atmosphere reduces the impact of Earth's gravity on the spacecraft. Drag and friction cause a drop in speed, which is critical for landing. This means that landing on land or sea becomes more feasible, as the speed remains within controllable range.
Second, the re-entry process can reduce the total mass of the spacecraft through high-temperature combustion. This is essential to reduce the effect of Earth's gravity. The high temperature environment poses challenges to materials and construction, but it is necessary to achieve a safe landing.
In fact, the high temperature of the re-entry process helps to protect the global environment. When the spacecraft passes through the atmosphere at high speed, the violent combustion can remove harmful substances from the atmosphere. This process can be thought of as "cleaning" the Earth's atmosphere. High temperatures remove harmful substances from the atmosphere, ensuring that they do not fall to the ground, posing a potential threat to ecosystems.
However, the re-entry process not only presents challenges, but also leads to research and innovation by many scientists. Spacecraft usually lose communication with the ground on reentry, which poses a certain risk. To solve this problem, scientists have worked to optimize related technologies and materials to improve the spacecraft's communication capabilities.
Today, China's space industry is also developing rapidly, and the performance of spacecraft is constantly improving. In the future, with the application of new materials and technologies, as well as the continuous improvement of spacecraft materials and safety, we are expected to witness the emergence of more advanced return technologies.
Today, spacecraft shells are often made of high-temperature-resistant materials, such as titanium as we know it. This material can effectively protect the spacecraft shell against extreme temperatures during high temperature combustion, reducing material wear.
In general, space is a challenging and uncharted territory that requires constant exploration and innovation. The spacecraft's re-entry process, while fraught with danger, provides the conditions needed for a safe landing. Scientists are constantly working to address issues related to the re-entry process to ensure the smooth running of space missions while keeping astronauts safe.
The above content and materials are derived from the Internet, and the author of this article does not intend to target or allude to any real country, political system, organization, race, individual. The above does not mean that the author of this article endorses the laws, rules, opinions, behaviors in the article and is responsible for the authenticity of the relevant information. The author of this article is not responsible for any issues arising above or related to any of the above, nor does it assume any direct or indirect legal liability.