In an interview, Zhang Benan, chief designer of the spacecraft system of the Manned Space Engineering Project, said that based on Shenzhou 5, the main technical features of Shenzhou 6 will remain as they are, based on the experience of the two-person multi-day mission. According to needs and the development of individual technologies, 110 technical improvements in four aspects have been made.

Improvement 1: The food cabinet is installed in the orbital cabin to prepare enough food.

Improvements centered on multi-day missions for two people. First of all, sufficient or even surplus supplies for astronauts were prepared, including food, water, sleeping bags, etc. The pantry is housed in the orbital bay, which was previously vacant. According to the water consumption of one and a half thermos bottles per person per day, water for astronauts is prepared through water tanks and separate flexible packaging. Secondly, the cockpit’s environmental control capability is improved. A person exhales nearly a liter of water a day. Shenzhou 6 has improved its ability to condense water vapor and expanded the condensation water tank to ensure that the spacecraft humidity is controlled below 80%. The oxygen, temperature and humidity in the cabin can be automatically sensed and adjusted.

Improvement 2: Use of urine and feces collection device for the first time

Improvements in the use of orbital cabin functions. Many necessities for astronaut life are placed, such as food heating devices and tableware. There is a sleeping bag hung in the orbital module for the two astronauts to take turns to rest. In a state of weightlessness, people can actually sleep floating in the air. However, considering the habits people develop on the ground, sleeping bags are used to artificially create a "bed" feeling. Otherwise, astronauts may have the illusion of falling into an abyss when sleeping. . There is also a special cleaning supplies cabinet in the orbital module, and astronauts can use warm towels and other items for cleaning. The urine and feces collection device was also used for the first time this time.

Improvement 3: Redesign the return seat buffer

Improvements to improve astronaut safety. The astronaut's seat in the return capsule is designed with a landing buffer function to ensure the safety of the astronauts in the event of a failure of the reverse thrust rocket. In the Shenzhou-5 spacecraft, only the seat Yang Liwei was riding on had a landing buffer function, and there was a small flaw in that it was difficult for the astronauts to see out of the portholes after the seat was raised before returning. The buffer was redesigned for Shenzhou-6 and combined with the entire ship through repeated trials. If the door between the return module and the orbital module is not closed tightly during return, it will threaten the safety of the astronauts. Three Russian astronauts lost their lives because of this.

Shenzhou-6 researchers successfully developed a rapid automatic detection device for cabin door sealing, and spent several months developing a special rag that does not produce fiber, static electricity or odor and is specially used for Clean hatch.

Improvement 4: The black box storage capacity is expanded by 100 times.

Continuous improvement. my country's manned spaceflight project was officially launched in 1992. It has been 13 years since then. Some of the components and raw materials originally used on the spacecraft are no longer produced, and some technologies have become slightly outdated. For example, the "black boxes" on Shenzhou 1 to 5 were developed in 1994 and had a storage capacity of only 10 megabytes. The current black box not only has a storage capacity that is 100 times larger than the original, but the data writing and reading speed has also been increased by more than 10 times, while the volume is less than half of the original.

Since there was no rendezvous and docking mission for this flight, Shenzhou-6 canceled the additional segment used for this function. In addition, more than 40 pieces of equipment and 6 pieces of software were added to the spacecraft, making the spacecraft’s equipment There are more than 600 units, 82 pieces of software, and more than 100,000 components.

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