When will Shen Qi spacewalk? When will it be returned?

The Shenzhou-7 spacecraft will be launched on the 25th of this month, and the three astronauts have been confirmed. It is reported that the most likely astronaut to carry out the first spacewalk in China's aerospace industry is astronaut Zhai Zhigang, who has been selected for the Shenzhou program twice, and the first candidate is Liu Boming. Zhai Zhigang, a 42-year-old native of Longjiang County, Qiqihar City, Heilongjiang Province, joined the Air Force in 1985 and has a record of more than 1,000 hours of safe flight.

The astronauts' exit time was selected at 4:30 p.m. on the second day after the launch of Shen-7. If Shen VII is launched on the night of September 25, then it will be 4 p.m. on September 26

Around 30, we will be able to see the astronauts' out-of-cabin activities through the TV screen, and if the Shen-7 is launched on the evening of September 26, everyone will see the astronauts' out-of-cabin activities at around 4:30 p.m. the next day, and so on. Cui Jijun also introduced that the astronauts chose to leave the capsule on the 29th lap of Shenqi's flight in space.

The spacewalk time of Shenzhou-7 is scheduled for the afternoon of the second day after the spacecraft enters orbit (that is, if Shenzhou-7 is launched on the 25th according to the preferred time, then Shenzhou-7 will be in orbit on the 26th, and the spacewalk of Shenzhou-7 will be on the afternoon of the 27th), and the spacewalk will be broadcast live on TV.

Gu Yidong, commander-in-chief of the aerospace engineering application system, explained to ** that the "sunrise module on the second day of launch" reported by ** was not accurate. Gu Yidong said that it should actually refer to the day after the spacecraft entered orbit, that is, on the afternoon of the 27th.

As mentioned in the previous introduction, the astronauts chose to leave the capsule on the 29th lap of Shenqi's spaceflight.

Actually, it was the astronauts who walked out of the capsule after arriving at the music, not Shen Qi. After exiting the capsule, the astronauts will only take one sample from outside the capsule and return to the capsule, which will take about 20 minutes! And I believe that the Chinese astronauts, they have minimized the incidence of all dangers, and if there is an accident, they can return to Earth in 4 hours at the earliest.

Pang Zhihao said that there are at least two technical problems to be broken through in order to realize the "spacewalk", one is the problem of setting up the airlock cabin on the spacecraft, and the other is the technical problem of the astronauts' extravehicular spacesuits.

One of the first pieces of equipment to be used for a spacewalk is the airlock, which is the gateway for astronauts to get out of the capsule. The airlock compartment of a manned spacecraft generally has two gates, one is connected to the cockpit called the inner gate, and the other is the outer gate that can lead to space. When the astronaut leaves the capsule, he first walks out of the inner gate, and then closes the inner gate to pump the air in the airlock into the cockpit, and when the pressure in the airlock and the outer space is equal, the outer gate can be opened and enter space.

Astronauts return to the airlock in reverse order, much like a ship passing through a lock. The air tightness of the inner and outer gates is absolutely reliable is the basic condition for the operation of the airlock cabin, and the opening and closing of the gate must be very careful and skillful, and it is very important to avoid air leakage, otherwise it is extremely dangerous. Pang Zhihao said that the airlock cabin can not only avoid deflating in the cabin, but also allow astronauts to have an adaptation process before leaving the cabin.

Previously, China's three aerospace heroes wore in-cabin spacesuits in space, and when performing the "Shen VII" mission, they must wear special extravehicular spacesuits. "The technology of an extravehicular spacesuit is much more complex, an extravehicular spacesuit with a portable life support system has a mass of more than 100 kilograms (the mass of the in-cabin spacesuit is 10 kilograms).

From September 25 to 28, 2008, Beijing time, China successfully carried out the Shenzhou-7 manned space flight.

At about 13:57, the door of the return capsule closes, and the astronauts begin to prepare for leaving the capsule.

At about 15:30, the air tightness inspection of the extravehicular suit is normal, and the air pressure valve is normal.

15:48: The Accusation Center approves the depressurization of the orbital module. The Shen VII orbital module began its first depressurization.

At 14 o'clock: The General Headquarters of the Shenqi Flight Mission decided: Zhai Zhigang is the astronaut out of the capsule, Liu Boming supports and cooperates with Zhai Zhigang in the orbital module, and Jing Haipeng is on duty to return to the capsule.

At about 16:17: Shenzhou 7 and the Beijing Flight Control Center had a dialogue, the spacecraft was running normally, the astronauts said they felt good, and the astronauts finished inhaling oxygen and nitrogen discharge.

About 16:22: The astronauts put on their extravehicular spacesuits.

At about 16:24, the important steps of the out-of-cabin activities have ended. The astronauts have completed preparations for oxygen inhalation, nitrogen discharge, and pressure relief.

At about 16:26, the orbital module began to depressurize for the second time, and when the air pressure in the cabin dropped to 2 kPa, the conditions for astronauts to exit the capsule could be met.

At about 16:39: With the assistance and cooperation of Liu Boming and Jing Haipeng, astronaut Zhai Zhigang of China's Shenzhou-7 manned spacecraft successfully exited the capsule and carried out China's first space out-of-cabin activity.

At 16:48, Zhai Zhigang took his first step in space, and the first spacewalk of the Chinese began.

Shenzhou-8, the eighth spacecraft in China's "Shenzhou" series, is an unmanned target vehicle that is preparing for docking with China's space station. The Shen-8 will be launched on the Long March-2F G rocket, an improved version of the Chang-2F, and is expected to be launched around 2011 after the launch of Tiangong-1. After the launch of Shenzhou-8, it docked with Shenzhou-9 and became a small space station.

The Shenzhou spacecraft will be basically finalized by the time of Shenzhou 8.

I'm sorry, Shen Qi flew in 2008, and now I'm going to fly Shen Eight!

Shenzhou-7 lifted off from 8 to 9 p.m. on the 25th of this month. The afternoon to evening of the two days is the most suitable time to leave the space, when the two astronauts will enter the orbital module. Because the space suit is very heavy, the cost is more than 100 million yuan, and it can only be put on with the help of another person.

The spacewalk will take about 40 minutes. There will be 2 lifelines connected to the astronauts. The spacesuit is developed on the basis of the Russian-style spacesuit, providing oxygen, pressure, power supply and other equipment, and after leaving the capsule, the astronauts will also put a small satellite to accompany the flight, with a camera lens on it, and the whole spacewalk will be broadcast live.

If this technology is successful, it will be a breakthrough in China's aerospace science and technology.

Approximately 68 hours after liftoff, all experiments will be completed. On the afternoon of the 28th, the spacecraft will return to Earth.

Wang Zhaoyao said that since its successful launch at 21:10 on 25 September this year, the Shenzhou-7 spacecraft has flown for 2 days and 20 hours and 27 minutes, and after flying 45 times around the earth, it landed safely at 17:37 on 28 September, for a total of 68 hours and 27 minutes.

It is understood that the Shenzhou 7 will be launched from 8 to 9 o'clock in the evening on the 25th of this month. The afternoon to evening of the two days is the most suitable time to get out of the spike module, when the two astronauts will enter the orbital module. Because the space suit is very heavy, the cost is more than 100 million yuan, and it needs the help of another person to put it on.

The spacewalk will take about 40 minutes. There will be two lifelines connected to the astronaut. The spacesuit is developed on the basis of the Russian-style spacesuit, providing oxygen, pressure, power and communication equipment, and after leaving the capsule, the astronaut will also put a small satellite to accompany the flight, with a camera on it, and broadcast the spacewalk live.

If this technology is successful, it will be a breakthrough in China's aerospace science and technology.

Approximately 68 hours after liftoff, all experiments will be completed. On the afternoon of the 28th, the spacecraft will return to Earth.

A responsible person of the Chinese Academy of Sciences said that the main task of the manned spacecraft engineering application system is to carry out space earth observation and space science and technology experiments.

The "Earth Observation Mission" is aimed at developing advanced space remote sensors in sync with the world and developing scientific research on the earth system, and has determined such on-orbit experiments and application tasks as medium-resolution imaging spectroscopy instruments, multi-modal microwave remote sensors (including microwave altimeters, radiometers and scatterometers), earth environmental monitoring and remote sensing application research. The monitoring of the earth's environment includes solar constant monitoring, solar and earth ultraviolet radiation monitoring, and earth radiation budget detection. The research on remote sensor application lays a foundation for the development of remote sensing application technology in China. Carry out research and application demonstration of imaging spectroscopy technology and microwave remote sensing technology in the ocean, land and atmosphere.

Space science research "arranges space life science, microgravity science (including the space materials science project and the microgravity fluid physics research project), as well as space astronomy projects, space environment forecasting and monitoring missions, with the goal of comprehensively improving the level of space science in China. "Space Life Science and Biotechnology" has developed a variety of high-esteem space experimental equipment, and carried out research on space biological effects, space protein crystallization, space cell culture, space cell electrofusion, and space protein and biological macromolecule separation and purification. "Space Materials Science Research" develops multi-station crystal growth furnaces and crystal growth observation devices, carries out research and space growth of binary and ternary semiconductor optoelectronic materials, transparent oxide crystals, metals and alloys, and studies the growth dynamics of space crystals; The research on "space environment forecasting and monitoring" can establish a space environment forecasting center to issue long-term, medium-term and short-term space environment forecasts and warnings, and carry out effects to ensure the safety of astronauts, manned spacecraft and space equipment.

Walk for 3 days! And unleash a small satellite! Return at 5 pm on the 28th!