China's development of a special clothing unit price of 30 million in the world's most expensive

Space suits are the most expensive clothes in history. China's space suits are said to be 30 million yuan. Even if you are the top fashion designed by top masters, the value is not less than one percent. Well, it may be a few large carat diamonds. Can compete.

There are currently three countries on the planet that say they actually produce and use space suits: Russia, the United States, and China. China independently developed the space suit, but in the end it adopted the products developed by Russian technology and copied shortcuts.

In April 2004, China and Russia signed a cooperation contract for the introduction of Seahawk cabin outerwear from Russian Nova Scientific Production Co., Ltd. According to the contract, the Russian side has developed and produced three sets of sea eagle outer suits for flight for the Chinese side, two sets of extravehicular space suits for low-pressure training, four sets of extra-vehicular space suits for water supply tank training, and There are four sets of docking systems, among which the power supply and communication equipment in these garments are developed by the Chinese side.

After the joint efforts of both parties, the introduction of the extra-flight space service contract was carried out very smoothly. In the Shenzhou VII mission, two Chinese astronauts will take the first flight out of the "Flying" extravehicular space suit and the "Sea Eagle" extravehicular space suit, taking the first step of the Chinese in space! Zhai Zhigang was wearing the first "Flying" extravehicular spacesuit developed by China himself and spent 20 minutes in the cabin.

The "Flying" space suit is divided into 6 layers from the inside to the outside: a comfort layer woven from a special anti-static treated cotton cloth, a backup airtight layer of a rubber texture, a main airtight layer composed of a composite joint structure, and a limiting layer of a polyester fabric. The thermal insulation layer and the outermost outer protective layer are realized by heat radiation. In addition, the trunk part is also a layer of shell, which is an aluminum alloy thin-walled hard body structure with a wall thickness of only 1.5 mm, but has a very high strength requirement, and the pressure resistance exceeds 1 20 kPa. The limbs of the garment are equipped with an adjustment Belt. By adjusting the length of the upper arm, the lower arm and the lower limb, people with a height of 1.60~1.80 meters can wear this suit. These are basic support systems, along with life support systems, control systems, telemetry and monitoring systems. Due to functional and process requirements, the total weight of the Feitian space suit reaches 120 kg.

On the ground, the process of putting on the space suit is only a few minutes. But the preparation work before this takes a lot of time: after putting on the underwear, the astronauts must first wear a physiological vest that can measure the heartbeat and body temperature, followed by an anti-static one-piece underwear, and then a layer. A tight-fitting liquid-cooled suit that can dissipate heat from the human body wraps people from head to toe, then puts on communication equipment, and finally wears a spacesuit outside the cabin. In heaven, this process is even more complicated. From the preparation of the dress to the full wear, the time is up to 15 hours.

Therefore, after the end of the space mission, it is said that the cost of bringing back is higher than that of rebuilding one. Experts explained that the space suits outside the Kaifeng are indeed very complicated. The unsealing unsealing project is divided into 21 operating units, of which only 12 large steps are included in the unpacking of the outerwear, and each step is divided into dozens of actions. Astronauts need tools such as pliers and wrenches to open the clothes. Therefore, after the completion of the outbound mission, it is very difficult to 'package.' With the limitation of volume and weight, the astronauts can only leave the spacesuit in the orbital cabin. (Author's signature: Xiaofei pig observation)