At 7:30 on the 17th, the Shenzhou 11 manned spacecraft was launched at the Jiuquan Satellite Launch Center by the "Shen Arrow" Long March 2 F Yao 11 carrier rocket carrying two male astronauts. The Shenzhou 11 manned spacecraft is carrying astronauts Jing Haipeng and Chen Dong. Rendezvous and docking with the "Tiangong-2" space laboratory, which was successfully launched on the night of the Mid-Autumn Festival last month, formed a combined flight for 30 days. This will also be the longest manned flight in my country so far. The total flight time is 33 days. The launch of Shenzhou 11 has pushed my country's aerospace industry to a new level. The aerospace industry has ushered in new development opportunities, and it is also expected to ignite aerospace and military industry stocks in the A-share market.

The main purpose of this mission: one is to provide personnel and materials for the on-orbit operation of the Tiangong-2 space laboratory, to assess and verify the rendezvous and docking of the space station's orbit and the manned spacecraft return technology; the second is to cooperate with the Tiangong-2 space The laboratory is connected to form a composite body for mid-term residency of astronauts, assessing the astronaut’s life, work and health protection capabilities of the composite body, as well as the astronaut’s ability to perform flight missions; the third is to carry out aerospace medical experiments and space science with participation. Experiments, on-orbit maintenance and other technical tests and popular science activities.

After the Shenzhou 11 spacecraft entered orbit, it completed the automatic rendezvous and docking with Tiangong-2 within 2 days to form a composite. Astronauts stationed on Tiangong-2, and the composite flew in orbit for 30 days. During the period, the two astronauts will work and live in accordance with the flight manual, operating instructions and ground instructions, and carry out relevant scientific experiments as planned. After completing the combined flight, Shenzhou 11 evacuated Tiangong-2 and returned to the landing site within one day. Tiangong-2 switched to independent operation mode.

With the successful launch of "Tiangong-2" and subsequent space station construction, my country's aerospace industry will gradually become stronger, and the launch of Shenzhou 11 will push my country's aerospace industry to a new height, and the "13th Five-Year Plan" During the period, it is expected to maintain a high investment of the order of tens of billions. Especially under the promotion of policies, capital and technology, the development of China's aerospace industry has entered the fast lane, and the aerospace industry has ushered in new development opportunities.

High temperature resistant materials help the aerospace industry take off

With the rapid development of the aerospace field, the application of new high-temperature materials in the aerospace field has become more and more extensive. Because the aircraft will face severe thermal environment when it travels through the atmosphere, its manufacturing materials and thermal protection structure have attracted the attention of the majority of researchers.

The main material for my country's spacecraft is aluminum, which is far from the temperature resistance requirement of 1649°C. Therefore, add an insulation layer (heat protection structure) to it. This insulation layer is a kind of insulation foam. In order to prevent the temperature of the rocket propellant from being too high or too low, some parts of the rocket body are pasted with some insulation foam. For heat preservation, where the local heat flows through a large area, ablative materials are used to absorb heat, and the heat insulation layer used by the American space shuttle is composed of 20,000 black insulation tiles. The basic material of general insulation tiles is ordinary sand, which is made into very fine fibers. Since 90% of the volume of the insulation tile is air, the thickness is divided into 25 mm and 12.5 cm, so it is extremely light in weight and can withstand high temperatures of up to 1260 ℃, so even if it flies at high speeds, it can generate high heat energy without damage .

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Henan Hecheng Inorganic New Materials Co., Ltd. (www.hcwjxc.com)