In addition to the aeroengine, the next natural achievement is the aerospace achievements of Tiangong technology. Although last year, Tiangong technology only successfully developed two rockets, namely Tiangong-1 rocket and tiangong-2 rocket.


    But even so, since they developed the first rocket in the second half of last year, Tiangong technology has launched six rockets in just three months.


    Two of these were launched from the South China Sea launch site, while the remaining four were launched from the launch site of Tiangong technology itself.


    In other words, since Tiangong technology successfully developed the first rocket, Tiangong technology will launch a rocket every half a month, and each launch is successful. Such a launch frequency can be described as very high. At the same time, in terms of success, it has been 100% successful so far. Such achievements are impressive.


    At the same time, in terms of the cost of rocket launch, since almost all the rockets launched by Tiangong technology have been recovered, the cost of launching spacecraft by Tiangong technology is much lower. The whole cost accounting is only about one fifth of the official launch cost of the same type of rocket.


    This makes the official very jealous of the rocket recovery technology of Tiangong technology, and has made a request to Tiangong technology to buy the technology.


    Wang Bin naturally agreed to the official purchase of rocket recycling technology. After all, for Tiangong technology, the current rocket recycling technology is only some transitional technology, and there is nothing to sell to the official.


    What''s more, aerospace can''t be played by a person or an enterprise, so it''s destined to play with the official. Naturally, the official technology improvement is also very happy to see for Tiangong technology.


    In addition to these engines that have been developed, there are several engine projects that Tiangong technology is developing and will soon complete.


    These projects are tg-003 turbojet engine, tg-wsx2 turbofan engine and the 500 ton rocket engine of Tiangong technology.


    The tg-wsx2 engine is the one that Wang Bin made a military order like the military years ago.


    However, the research and development difficulty of this tg-wsx2 engine was somewhat beyond Wang Bin''s expectation. According to Wang Bin''s original expectation, the engine could be almost completed by the end of last year with the R & D ability of Tiangong technology in engine.


    However, this is not the case. Due to the high requirements of the military for this engine, the R & D of this engine encountered many problems in the last two months of last year, although these problems were finally solved with the efforts of Professor Zhang and other R & D personnel and Wang Bin himself.


    However, when the design drawings of this engine came out and the trial production of the prototype began, it was already at the beginning of this year, and even so far, the manufacturing of the ten prototype engines has not been completed. According to Wang Bin''s estimation, it will take at least half a month to complete the manufacturing of the ten tg-wsx2 engine prototype.


    However, in any case, this engine is finally developed. At the same time, in terms of design data, it also maintains the consistent style of Tiangong technology, which is very excellent.


    Like the previous turbojet engine, this engine is also a medium thrust engine, not a large turbofan engine. However, although the nozzle diameter of this engine is not large, the overall diameter is only about the same as that of the turbofan engine of an ordinary fighter. Even in terms of the basic length of the engine, it is not much longer than that of an ordinary engine.


    However, the thrust of such a small bypass ratio turbofan engine, namely tg-wsx2 engine, which can be basically installed on all active fighters in China, has reached a very high level.


    Even compared with the turbofan engine of the military fighter with the largest thrust in the world, it is not inferior. It even exceeds some in thrust, and it is also higher in specific thrust.


    Tg-wsx2 small bypass ratio turbofan engine is developed on the basis of TG-001 turbojet engine, so its thrust is naturally much larger than that of TG-001 turbojet engine, reaching the level of 21 tons.


    At the same time, the working efficiency of the engine is much better than that of the turbojet engine.


    There is also a similar Tiangong 3 500 ton rocket engine that has been developed. Due to the completion of the research and development of this engine, Tiangong technology has made a rocket with more powerful carrying capacity than Tiangong 2 rocket.


    According to the design data of the rocket laboratory, the new rocket will be a behemoth. The carrying capacity of this rocket will reach about 700 tons. It can be said that such a rocket is already a heavy rocket. With such a huge tonnage, the carrying capacity of this rocket is not low.


    Because this rocket, like the previous rocket designed by Tiangong technology, is a recyclable rocket, its carrying capacity is much smaller than that of other rockets of the same level, but the maximum carrying capacity in low earth orbit has also reached about 15 tons. At the same time, the carrying capacity in synchronous orbit has also reached about 8 tons.


    Although it seems that its carrying capacity is much worse than that of a rocket of the same level, this rocket is a recyclable rocket, including a two-stage rocket and a fairing. Therefore, if this rocket can be designed, developed and launched successfully, it is not conceivable that other rockets of the same level can launch economically.


    Although the carrying capacity of rockets of the same level is at least 18 to 20 tons at this tonnage, and the carrying capacity of synchronous orbit is also 10 to 12 tons, other rockets of the same level cannot be used again after one use, but this rocket of Tiangong technology is different. Due to the overall recovery, It can be launched again next time, so on average, the cost of each launch of this rocket is at least four fifths lower than that of other rockets of the same level.


    That''s why Wang Bin paid special attention to the research and development of this rocket. During this period, he went to the rocket laboratory almost every day to check the progress of rocket R & D and manufacturing. At the same time, when he encountered problems in the laboratory, he also helped solve them.


    You know, if Tiangong technology has a rocket with such carrying capacity, Tiangong technology will be qualified to participate in major aerospace projects presided over by many officials, not like now.


    Although a number of spacecraft have been launched to the official, it has joined the ranks of the construction of the Huaxia aerospace project.


    However, with this rocket, Wang Bin and their Tiangong technology will be more confident, and can also greatly accelerate the progress of these projects in Huaxia. At the same time, the consumption of funds will be greatly reduced. After all, Huaxia has many large aerospace projects this year, including the construction of the space station.