After all, a civilized spacecraft wants to fly in the universe for a long time, especially when it has just stepped out of its civilization''s parent star and has not mastered artificial gravity technology and artificial anti gravity technology.


    The vast majority of the people of their race should at least have the physical quality to meet the ability to survive for a long time under the weightless condition of the universe.


    In today''s human civilization, before Wang Bin and Tiangong technology developed genetic agents, most people could not survive in a weightless environment without professional training.


    Even the specially trained astronauts, in fact, each time they carry out space activities, the load on their body is very huge, and even irreversible long-term damage will occur.


    Not to mention, the time required for space navigation is very long.


    Not to mention sailing outside the solar system. Just in the solar system, with the current scientific and technological level of the earth, it will take several months to go to Mars and Venus. This is only the planet closest to the earth. If you go to a more distant planet, it will take longer, a few years or even decades.


    .......


    In the following few days, Professor Zhang''s physical condition was getting better and better day by day, and his spirit was getting better and better day by day. Only in less than a week, Professor Zhang had changed from a dying old man with oil and light to a healthy man with red face and full of energy.


    Moreover, Professor Zhang''s physical condition is even better than that of ordinary middle-aged people in their 40s.


    Therefore, on the fifth day, Professor Zhang was discharged from the hospital, but even so, in order to ensure his physical condition, Professor Zhang still had to be examined by Professor Li every day.


    With the improvement of Professor Zhang''s physical condition, Wang Bin finally let go and paid attention to the progress of other projects of Tiangong technology.


    At the same time, since the air force base where Qiu Shi and Wang Bin are now stationed is very close to Tiangong technology, just across an airstrip, Qiu Shi has basically run to Tiangong technology every day to learn about Professor Zhang.


    ......


    Wang Bin was not very worried about the lunar exploration satellite launched before. With the entry of the lunar exploration satellite into orbit, all kinds of equipment work normally. It is absolutely impossible to have any problems in a short time.


    Therefore, in this regard, their Tiangong technology only needs to launch more lunar satellites and make them completely networked.


    In addition, in Tiangong technology and other aerospace projects, it is also carried out in an orderly manner step by step.


    In addition to aerospace, in the near future, their Tiangong technology will also have a new action, that is, the phoenix-a1 transport aircraft equipped with pulse engine has been designed and ready to start production.


    However, this aircraft is not the air space integrated pulse detonation engine they discussed before, but an aircraft using a pure pulse detonation engine.


    In other words, this aircraft is the same as the previous phoenix-1. This phoenix-a1 aircraft is only an aircraft in the atmosphere.


    However, the performance of this aircraft will be better than that of the phoenix-1, especially in terms of flight altitude and speed.


    According to the calculation of Tiangong technology, the maximum flight speed of phoenix-a1 aircraft using pulse detonation engine can reach at least Mach 4, and the flight altitude will also reach more than 36000 meters.


    Therefore, we also attach great importance to Wang Bin. After all, the most important role of this aircraft is not how good its performance is.


    The most important role of this aircraft is to verify how the pulse detonation engine performs after it is installed on the aircraft.


    However, when Wang Bin and Tiangong technology were preparing to manufacture phoenix-a1 aircraft.


    The phoenix-1 aircraft, which was previously taken over by the military for flight test verification, has finally completed the first phase of flight test. At the same time, the military also recognizes the overall performance of this aircraft.


    However, the military also put forward its own suggestion, that is, it hopes that the aircraft of Tiangong technology can be divided into more detailed uses. It can not play any role like this phoenix-1 transport aircraft.


    For example, the transportation type is the transportation type, and the bombing type is the bombing type.


    In this regard, Wang Bin naturally agreed. After all, it is not difficult for this aircraft to make the aircraft platform more professional. It can be solved easily.


    In this regard, Qiu Shi and they naturally believe Wang Bin''s words very much. After all, as the manufacturer of this aircraft, Tiangong technology has the most say in this aircraft.


    At the same time, with the completion of the first phase test flight of the first phoenix-1 aircraft, what the aircraft needs to do next is the second phase test flight.


    The test flight at this stage will not be carried out by one aircraft, but will be carried out by multiple sorties and high-intensity test flights.


    The phoenix-1 aircraft, which has passed the first stage of test flight, has almost completed its mission. After all, it is only a prototype, so it will be included in the aircraft exhibition hall by Tiangong technology for later viewing.


    Of course, at this time, the second and third phoenix-1 aircraft of Tiangong technology have also been manufactured and handed over to the military. At the same time, the follow-up aircraft are also being manufactured.


    In Wang Bin''s own office, Wang Bin and Qiu Shi were drinking tea and chatting about the situation shown during the test flight of phoenix-1 aircraft and the areas that need to be improved.


    But as the conversation continued, they talked about other topics.


    Qiu Shi said; "Mr. Wang, I wonder if Tiangong technology has any design plans for fighters or fighters?


    After all, the phoenix-1 designed by your Tiangong technology has such excellent performance. I think you will never be worse in the design and manufacture of other aircraft. "


    Wang Bin thought for a moment and said, "Qiu Shi, in terms of fighter or fighter, Tiangong technology has no corresponding R & D plan, but if your military assigns R & D tasks, we are also confident to develop the world''s top fighter."


    In terms of fighter R & D, Tiangong technology really doesn''t have any projects in progress, but since Qiu Shi mentioned it, Wang Bin wondered whether he should start planning this project.


    After listening to what Wang Bin said, master Qiu thought for a moment and said, "President Wang, I don''t know what you think of the sixth generation machine! If we give you Tiangong technology the task of developing the sixth generation machine, are you confident that you can develop it."


    "Sixth generation machine? Can you tell us the specific performance requirements and standards?" Wang Bin asked.


    After all, in the world, the standards of countries for the sixth generation aircraft are not consistent. Countries have their own standards, so Wang Bin needs to ask the military for the standard definition of the sixth generation aircraft.