Use wechat scan QR code to share with friends and circle of friends_ blank" href=" https://news.163.com/news/search?keyword=%E8%88%AA%E5%A4%A9 "> Aerospace < / a > < a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E5%8F%91%E5%B0%84%E5%9C%BA "> launch site < / a > launch with Long March 7 remote 3 rocket < a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E5%A4%A9%E8%88%9F%E4%BA%8C%E5%8F%B7 "> tianzhou-2 < / a > < a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E8%B4%A7%E8%BF%90%E9%A3%9E%E8%88%B9 "> cargo ship < / a >. The space station Tianhe core module is about to welcome its first "visitor" According to the introduction, tianzhou-2 cargo spacecraft is the first cargo spacecraft to fly in the key technology verification and construction stage of China space station. According to the mission plan, the tianzhou-2 cargo spacecraft will carry three astronauts' consumables, extravehicular space suits and platform materials to rendezvous and dock with the on orbit Tianhe core module, laying a solid foundation for the subsequent missions and the further on orbit construction of the space station < p > according to the China Manned Space Engineering Office, at 20:55 on May 29, the Long March 7 yao-3 carrier rocket carrying the tianzhou-2 cargo spacecraft ignited and launched on time at Wenchang space launch site in China. About 604 seconds later, the spacecraft and the rocket successfully separated and accurately entered the predetermined orbit. At 21:17, the two wings of the solar panel started working smoothly. The launch was a complete success < p > the launch vehicle and the tianzhou-2 cargo spacecraft participating in the launch mission were jointly developed by the China Academy of launch vehicle technology and China Academy of space technology of China Aerospace Science and Technology Group Co., Ltd. This is the 371st flight of the long march series of launch vehicles. This mission is also the first applied flight of the space station cargo transportation system composed of Tianzhou cargo spacecraft and Long March 7 carrier rocket According to the official microblog of the people's daily, at about 20:50 today (May 29), the Long March 7 launch vehicle, which launched the tianzhou-2 cargo spacecraft, has ignited and taken off at China's Wenchang space launch site < p > ready to go < p > < / P > < p > ignite and take off < p > launch During the on orbit construction of the space station, the tianzhou-2 cargo spacecraft was responsible for the transportation of supplies and loads, propellant, on orbit storage and down going waste materials for the space station. Tianzhou-2 is a cargo module and a propulsion module. It is the first cargo spacecraft to be built on orbit < p > according to the mission planning, the tianzhou-2 cargo spacecraft will carry three astronauts and three months' consumables, two sets of extravehicular space suits and platform materials for rendezvous and docking, propellant supplement and combined flight with the previously launched Tianhe core module. The weight of the upward cargo carried by the sealed cabin of the spacecraft is about 4.69 tons, the propellant is 1.95 tons, and the total weight of materials is nearly 6.64 tons < p > before the astronauts officially enter the space station, this super "express brother" will dock the astronauts' living materials, extravehicular space suits, space station platform equipment, application loads and propellants with the core module, quietly waiting for the arrival of the astronauts < p > Tianzhou cargo spacecraft shuttles between the world, providing a continuous supply support for the mission of China's space station and realizing space supply. China's space station will fly more stably and for a longer time in space As a new generation of non-toxic and low pollution medium-sized launch vehicle in China, the Long March 7 yao-3 launch vehicle uses a new type of LOX kerosene engine and green, low-temperature and high-energy LOX kerosene fuel. At take-off, six 120 ton high thrust engines provided more than 700 tons of thrust, and there were four LOX kerosene engines in core II, which were enough to send the cargo carrying tianzhou-2 into the orbit of rendezvous and docking with the core module According to the mission plan, three more cargo spaceships will be launched this year and next year. The Chang-7 rocket will form the strongest space to space transportation combination with the Tianzhou spacecraft, providing on orbit supplies for astronauts and spacecraft, and escorting the manned mission during the construction phase of the space station < p > materials: China Manned Space Engineering Office, China Science and Technology Museum, people's daily, Kan Kan news < / P > < p > editors: Li Weitao, Ruan Tianlin