"Astronaut extravehicular activity is a difficult and high-risk activity." According to experts, the spacewalk of Shenzhou VII requires astronauts to do full experiments and training on the ground, and the ground training is generally carried out in a neutral pool with certain requirements for specific gravity. This kind of pool is usually built in a large test room. There is a spaceship in the pool, which uses the buoyancy of water to simulate the weightlessness in space. Then the astronauts trained in the pool for entry and exit operations.
Experts say that "Shenzhou VII" will have several necessary conditions for astronauts to walk in space. First of all, it will provide the environment and conditions for astronauts to live and work outside the cabin, the most important of which is the extravehicular spacesuit, which has many functions such as meteor prevention, vacuum heat insulation and shielding, air tightness, pressure maintenance, ventilation and temperature regulation. The gloves of the spacesuit are both sealed and elastic, and the helmet is transparent and sealed. Secondly, the extravehicular backpack has a control system and a communication system, and the control system is equipped with a jet device, so that the astronauts can control the walking direction. It is reported that space suits and backpacks are complex in structure, technically difficult and expensive. A set of spacesuits produced in the United States is about $65,438 +0.5 million. Third, of course, there must be astronauts with skilled technical operation, good health and stable psychological quality.
"At present, other parts of Shenzhou VII are similar, only the spacesuit has to tackle key problems, and the research progress of the spacesuit determines the progress of Shenzhou VII." Huang Chunping added, "However, China is fully capable of solving it."
Huang Chunping said that in order to adapt to the vacuum environment, the Shenzhou VII spacesuit has been greatly improved in terms of air tightness, communication, excretion, communication, power supply and movable joints.
At the time of "Shenzhou 5", China's manned space flight was only an assessment of a person going into space one day. At that time, Yang Liwei only stayed in the return module, and the door of the orbital module was closed. Although "Shenzhou VI" is almost the same as "Shenzhou V" in appearance, the difference is that two astronauts will enter the orbital module from the return module and engage in multi-person and multi-day space flight procedures. Experts made an image metaphor, "Two astronauts are active in' one room, one living room'. On Shenzhou VII, astronauts should not only move in the "one room, one living room", but also walk out of the "living room" and the window on the side of the orbital module.
According to reports, "Shenzhou VII" has higher requirements for astronauts' life support system, extravehicular equipment and structural air tightness, so "Shenzhou VII" will be obviously different from "Shenzhou VI" in appearance, and related systems will also be changed, especially the orbital module.
Usually, after the spacecraft is launched into space, astronauts will make adaptive preparations in the airlock room for 2-3 hours before leaving the cabin. They will wear extravehicular spacesuits, carry backpacks and carry supplies in the airlock. The spacesuit worn by astronauts who walk in space is huge, and the weight on the ground reaches 125 kg, which is not as easy as wearing a hat on the ground. It can only be put on with the help of other astronauts. "So, there will be at least two astronauts on Shenzhou VII, so that we can cooperate with each other. As for how many people will leave the cabin, it is uncertain. It is estimated that a person walks in space. "
According to Huang Chunping's prediction, Shenzhou VII will have three astronauts, one will walk out of the cabin, one will meet in the orbital module, and the other will stay in the return module. Extravehicular activities will include walking, operating, screwing and other installation equipment to prepare for the establishment of a space station in the future.
On September 25th, 2008, 2 1: 10, the Long March II F carrier rocket carried the Shenzhou VII manned spacecraft, carrying the dream of China people to reach new heights in space and fly into space. There are four public documents * about www.51LUN-wen.cn.
This is the seventh time that shenzhou spaceship flew into space and the third time that China people landed in space. 5 1-5 1 Free paper net-Net-Welcome!
After Yang Liwei realized the Chinese dream, Fei and Nie Haisheng entered the orbital module to conduct space science experiments, today, three China astronauts Zhai Zhigang, Liu Boming and Jing Haipeng shoulder a brand-new historical mission-according to the plan, they will walk out of the module during this space flight. 5 1-5 1 Free paper net-Net-Welcome!
China people will leave their footprints in space for the first time-this invisible footprint will surely be the most unforgettable step and will be remembered by the Chinese nation forever. 5 1-5 1 Free paper net-Net-Welcome!
How far is the dream, how far can the pace of progress go. From the start of the manned spaceflight project in 1992 to the launch of the Shenzhou-1 experimental spacecraft in 1999, it took more than two days from Shenzhou 5 to Shenzhou VI, and after a series of breakthroughs from dream to reality, China's manned spaceflight once again achieved a major leap. There are four public documents * about www.5 1 LUN-w en.cn.
Realizing spacewalk is a historic step for any space power in the world. 5 1-5 1 Free paper net-Net-Welcome!
It is the astronauts' extravehicular maintenance that enables scientists to still enjoy the valuable resources provided by the Hubble Space Telescope launched in April 1990, while the Mir space station with a design life of five years has been in service for 10, and more than 16500 scientific experiments have been conducted. It is also closely related to the continuous maintenance of astronauts (4' about 5 1 LUN-we n.cn) ... The realization of spacewalk is a landmark breakthrough of manned space flight in any country: it means that astronauts can independently leave the cabin to maintain valuable spacecraft and build and assemble space stations. 5 1-5 1 Free paper net-Net-Welcome!
The International Space Station under construction needs the participation of astronauts in space. In the "return to the moon" and further deep space exploration, astronauts (Gong Wenyou about * .4 about gw9080.c.om) are even more needed for spacewalking. 5 1-5 1 Free paper net-Net-Welcome!
Astronauts' extravehicular activities are technically difficult and risky, and they face unprecedented challenges in technical research, product development, astronaut training and mission organization and command. For this reason, since Soviet astronaut leonov first set foot in space at 43 degrees in the Spring and Autumn Period 1965+08 in March, only the United States and Russia still have complete technology and experience of extravehicular activity. 5 1-5 1 Free paper net-Net-Welcome!
However, as Zhou Jianping, the chief designer of China's manned spaceflight project, said, the Chinese nation, striding forward on the road of realizing its dream of flying for thousands of years, has the courage to meet such challenges. 5 1-5 1 Free paper net-Net-Welcome!
If the astronauts leave the cabin and walk smoothly, the next step of Shenzhou flight will be the rendezvous and docking test of the spacecraft. Then develop a space laboratory with short-term manned and long-term autonomous flight in orbit with a certain application scale, and then develop a long-term manned space station. The public documents * are' 4 about 51LUN-wen.cn.
The glory of reality never begins with great dreams. From GPS navigators in fishing boats and taxis to satellite radio and television in almost every household, from weather forecast and information network to "space rice" and "space vegetables" on the dining table ... Today, we have lived in an era when the fruits of "space civilization" are widely used. There are about four LUN-wen.cn 51.
Space not only provides us with advanced resources, microgravity resources, ultra-high vacuum resources, unlimited energy and material resources, but also provides us with space resources from vast expanse (from Gong Wenyou, 4 about g, w9080.com), and can even open up endless living space for us and create a brand-new way of life for us. ...
However, human exploration and development of space has just begun. Even if the historic breakthrough of extravehicular walking is successfully achieved, there are still countless mysteries waiting for us to decipher in the vast universe. 5 1-5 1 Free paper net-Net-Welcome!
Glory and dreams are always closely linked. As the first nation with a dream of flying, when it was still hungry, it turned the dream of "two bombs and one satellite" into a brilliant reality. We have reason to believe that with the rise of a new wave of space exploration, it is time for the Chinese nation to benefit mankind with its flying wisdom. Official documents *: There are four about www.51lun-wen.cn.
Shenzhou VII, I wish your dream come true.