However, when the aircraft skeleton of Tiangong technology came out of the painting workshop and entered the assembly workshop again, Wang Bin, who wanted to continue the assembly of the aircraft in the workshop, had to come out of the workshop.


    Because after several days of assembly work, the second tiangong-4 rocket of Tiangong technology has been assembled and erected on the launch pad.


    At the same time, their first deep space satellite of Tiangong technology has also completed R & D and assembly, and has been installed on the rocket, just waiting for launch.


    Of course, according to the original plan, the rocket should have been launched a few days ago.


    However, due to the unsatisfactory weather conditions in recent days, the rocket has not been launched since this time.


    According to the weather forecast, today''s weather will be very good, so their Tiangong technology learned about the weather a few days ago and decided to launch the rocket this afternoon.


    Of course, before the launch of the rocket, Tiangong technology had reported the matter to the superior and obtained the consent of the superior.


    Of course, with the successful manufacture of the satellite by Wang Bin and Tiangong technology, it also means that Tiangong technology has successfully mastered the satellite manufacturing technology, and it is also the manufacturing technology of deep space exploration communication and relay satellite.


    In fact, in general, compared with rocket manufacturing technology, satellite manufacturing technology is relatively simple. Of course, this is only relative to low earth orbit satellites, which are not technically complex and have a single function.


    Because in an environment like space, satellites must consider many factors, such as weightlessness, high radiation, high temperature, low temperature, meteorite debris impact and so on.


    It is precisely because of this that the requirements for satellite materials are very high, and their Tiangong technology has made great achievements in materials.


    For the satellite designed and manufactured by Tiangong technology, its technical difficulty is much greater, even compared with rocket technology.


    First of all, naturally, the weight of the satellite has reached more than 10 tons, and the satellite has many functions. At the same time, the orbit is outside the geosynchronous orbit. Most importantly, the satellite also adopts new means of communication.


    As the launch time approached, Wang Bin came to the control console of the rocket launch site of Tiangong technology. At the same time, Wang Bin was still a little excited.


    After all, the satellite launched this time, but their Tiangong Technology launched their own space spacecraft for the first time. Before, although they had the ability to launch a variety of rockets, they basically launched official satellites and never launched their own satellites.


    Of course, this is also related to the fact that Tiangong technology did not have such needs before, but now it is different. Due to the formal proposal of Tiangong technology''s deep space star chain plan, it can be predicted that most of the rockets launched by Tiangong technology will carry their own satellites


    Originally, according to reason, since Tiangong technology developed satellites for the first time, it should be honest and step-by-step. It is only right to first develop small low orbit satellites with single function and less complex technology. However, Tiangong technology directly developed high orbit satellites outside geosynchronous orbit, and still plays satellites with complex functions.


    At this time, a slender rocket was standing there in the Tiangong science and technology rocket launch site. However, Wang Bin found that this tiangong-4 rocket was somewhat different from the first tiangong-4 rocket before. That is, the fairing of this rocket was much larger than the one launched before, and even its diameter was larger than the core stage of the rocket. At the same time, The length of the fairing is much longer, reaching more than ten meters. However, the length and diameter of the fairing of the rocket launched before are not as big as those now.


    It is precisely because of this that Wang Bin feels that this rocket is somewhat different from the previous one. After all, under the current situation, this rocket looks much larger and feels longer at the same time.


    However, there is no way. Although the satellite developed by Wang Bin and Tiangong technology this time weighs only about ten tons, it is still a little rusty in terms of technology because Tiangong technology is the first time to develop a satellite or a satellite with complex functions. In addition, because the orbit of the satellite is outside the synchronous orbit, We must consider many factors compared with low orbit satellites. At the same time, Wang Bin''s first requirement for this satellite is also very long, and he must have the ability to operate for more than 50 years.


    Therefore, the satellite developed by Tiangong technology will be so large and heavy,


    Of course, the satellite launched this time was developed by Tiangong technology, and the orbit is outside the synchronous orbit. At the same time, this satellite is also the first satellite in the deep space satellite chain program.


    Therefore, the launch of this satellite has naturally received great attention from the government. The whole control center has been crowded with satellite experts and aerospace workers from all aspects. At the same time, these experts are quietly discussing something at this time, including the head of the Aerospace Department, Qin Lao.


    Wang Bin quietly looked at the rocket in the middle of the launch pad, and next to the rocket, there were many people busy at this time. Wang Bin knew that this was their technician in Tiangong science and technology rocket, who was conducting the final inspection of the rocket.


    At the same time, no aircraft was flying over the rocket launch site. Even some civil UAVs, it was obvious that the sky near the Tiangong technology rocket launch site had been banned.


    "Mr. Wang! The rocket is in good condition, and the fuel has been added. It can be launched at any time. Will you please tell me whether the launch mission is carried out according to the original plan?" Mr. Sun said to Wang Bin.


    "Follow the original launch plan." Wang Bin turned his eyes to one side and asked the launch director, sun Lao said.


    Just after Wang Bin finished, the staff at the launch site began to evacuate one after another, and the countdown to the rocket launch began.


    "30.29.28... 3.2.1! Fire! Launch!" with the end of the countdown to the rocket launch, the controller on the launch pad on one side gently pressed the red rocket ignition launch button. The tiangong-4 rocket standing upright in the launch site immediately emitted countless hot flames from its tail, and the tiangong-4 rocket began to leave the ground slowly.


    At the same time, when the rocket is ignited, countless water columns are also ejected from the rocket launch pad, and are rapidly vaporized after contacting with the flame ejected by the rocket, so as to reduce the damage of the flame ejected by the rocket to the launch pad. At the same time, these water vapor can also effectively suppress the huge sound generated during rocket launch.


    At this time, as the height of tiangong-4 rocket rises, the color of the flame ejected by the rocket also changes, from the original orange red to completely transparent white. It can be imagined how high the flame temperature ejected by the rocket at this time and how bad the operating environment the rocket engine needs to bear.