The test flight of the new space plane was quite successful. Although it did not really break through the atmosphere into space, it still flew to an altitude of 30000 meters with the powerful thrust of the engine, and always maintained the ultra-high speed of Mach 7.


    This is very incredible for an aircraft. After all, under normal circumstances, the flight speed of supersonic fighters is below Mach 3.


    Although we can build an aircraft that can accelerate to Mach 10, this kind of aircraft is not a fighter, which requires high mobility.


    As for the reason, it is not that there are any technical obstacles, but that when maneuvering at high speed, the pilot can not bear the ultra-high G force brought by large-scale maneuvering at hypersonic speed.


    Although it is said that astronauts can withstand greater G force with the anti-G design of space suits after strict training, the problem is that it is impossible for every fighter pilot to reach the level of astronauts, and it is impossible to give every fighter pilot a space suit.


    Therefore, in order to protect pilots, the flight speed of fighters is limited.


    In fact, in the South Tianmen project, the original Xuannv Aerospace unmanned fighter also adopted the pilot protection design because of the manned driving mode. The flight speed in the atmosphere was limited to about Mach 5. Only after leaving the atmosphere can it reach the high speed of Mach 25 of the speed of the second universe.


    When there is no one at all, this consideration can be omitted. After all, whether the aircraft itself can withstand such a large G force is a matter of materials, and the upper limit that metal can withstand is obviously much higher than that of human beings.


    Therefore, even at Mach 7 hypersonic speed, this test flight aerospace aircraft technology verification aircraft can still carry out various maneuvers and has a good performance and performance.


    However, even so, there are still many problems with this technology verification machine. After all, it is a piece of things pieced together by various technologies. Although there is no problem for the aircraft to fly, there are still some coordination problems among various technologies.


    It is precisely because of these small problems that the overhead plane did not complete all the flight test projects.


    After all, according to the design, the technical verification aircraft for the test flight is to try to fly to an altitude of 40000 meters for a hypersonic cruise flight of Mach 10, but now it has only reached an altitude of 30000 meters and a speed of Mach 7.


    This obviously does not meet the expected requirements.


    Therefore, after the plane returned, it was immediately taken back to the hangar by the aerospace aircraft project team and immediately started inspection and adjustment.


    Chen Xin did not intervene in the space plane, although if he did, let alone the space plane designed now, even if he really built the Xuannv fighter in the conceptual state of the South Tianmen plan, it would be nothing more than a matter of thinking for Chen Xin.


    But this obviously conflicts with the joint research itself. After all, the purpose of all countries is to integrate the technology of all countries through joint research, not to say that they lack this overhead fighter.


    And more importantly, only by taking this whole R & D route once can we accumulate enough experience.


    Not to say that the plane was made, I only know how to make it, but I don''t know why.


    This is also the blood and tears experienced by Yanguo in that year, because the industrial foundation was weak in the early days of the founding of the people''s Republic of China, and many things were built with the assistance of suvia in that year. Later, the relationship with suvia deteriorated, and the technical support for many things was cut off, so he had to focus on R & D himself. He suffered a lot of losses and lagged behind others.


    It was not until a few years before the disaster that the overall foundation of the country was established and the accumulation of various technologies reached the threshold that it caught up with others.


    Therefore, technology research and development is still very important. It does not mean that Chen Xin can solve the problem by making a finished product through system upgrading and allowing them to conduct reverse research.


    Although Chen Xin can build Xuannv fighters through system upgrading, no researchers have completed all the R & D routes step by step. Even if they can reverse crack all the technologies on Xuannv fighters, the country can only obtain these technologies. To really use them in practice, we still have to go through the route of product R & D again.


    If there are ready-made products for technical upgrading, it doesn''t matter. As long as there is no too fault in the upgrading, it can provide ideas for researchers and reduce their many exploration and detours.


    However, a product made from scratch can''t do this. In particular, the technology on the Xuannv fighter is full of black technology, and the fault between it and the technology now mastered by mankind is too obvious.


    Human cognition of these technologies is still in the stage of theory and concept. Even if we really have these technologies, it is still not easy to master them.


    After all, a technology does not mean that it is OK to have it. It also needs to be thoroughly studied, master the principle and be able to apply it in practice. This is the real mastery of a technology.


    Moreover, scientific and technological development has its context and style, which can be seen from the strong suvian style of military equipment in the early days of Yanguo. Even today, Yanguo''s scientific and Technological Development and military equipment line have gone out of its own style, we can still see the shadow of suvian technology in those years.


    This is the so-called technology system. After all, the style of suvia technology was obviously different from that of the Federation.


    The technology between the two cannot be said to be diametrically opposed, but it took many years of time and experience for Chinese researchers to integrate the two.


    This is the same generation of science and technology at the same level. If we come to a technology that has been ahead for decades, it can not be absorbed in a short time.


    This is like the power armor, Titan and other equipment currently used by Yanguo. Although Chen Xin made these things through upgrading, the relevant technologies have been reverse studied all the time.


    Many researchers in China are groping at the same time. As for what problems and how to improve, they are all black in their eyes.


    We can only draw the gourd according to what Chen Xin made, and send it to the battlefield for actual combat. If we encounter problems in actual combat, we can make minor repairs according to the feedback.


    It is still difficult to understand the technology and design a similar product by yourself.


    Otherwise, the power armor, exoskeleton, heavy machine armor and Titan used by Yanguo are all made by Chen Xin.


    This is also what a senior leader in charge of science and technology talked about before Chen xinlai.


    Although the country really needs these things made by Chen Xin and appreciates his contribution to the country, the development of science and technology can not be so encouraging.


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