As the aircraft flew over the sea, the flight control platform was also displaying the flight data of transport plane 9 at this time. At the same time, the flight control personnel were also reporting the flight data of the aircraft in real time.


    "The plane flies at an altitude of 3000 meters, with a speed of 550 kilometers per hour and fuel consumption per second..."


    Wang Bin, Professor Dai and Professor Zhang also quietly stopped reporting the data and judged the aircraft data in real time.


    "Mr. Wang! The flight data of this No. 9 transport aircraft after transformation is really very good, at least much better than that before transformation. Although the flight speed of the aircraft has reached the cruise speed before transformation, the airframe and wing conditions of the aircraft are very stable during flight, and there is no jitter or even vibration The sound of the engine was not loud, and no abnormal conditions were found. Obviously, the plane was still very good at this time! "Professor Dai Kunlun said softly to Wang Bin after checking the flight data.


    "Indeed! The situation of the aircraft is still very good, but at this time, the aircraft has not reached the cruise speed in the data, and the altitude is only about 3000 meters. When the flight speed and altitude of the aircraft reach the limit, we can judge the overall situation of the aircraft." Wang bin nodded.


    With the chat of Wang Bin and others, the speed and altitude of the aircraft began to improve again, and soon the aircraft reached the cruise altitude and speed, that is, the altitude of 10000 meters and the flight speed of 600 kilometers.


    At the same time, Wang Bin and others finally stopped chatting, but all looked at the flight data of the aircraft.


    However, fortunately, even if the aircraft has reached the cruise speed and altitude at this time, the situation of the aircraft is still very good. According to the data transmitted by the sensors on the aircraft, there are no abnormalities in the overall situation of the aircraft, including skin, fuselage, body and structure.


    Therefore, when Wang Bin and others saw these data, they finally relaxed a lot, because at this time, it can be said that this No. 9 transport plane has basically reached the expected data for transformation.


    Next, it depends on the maximum limit value of the aircraft, so with Professor Dai''s command, the flight control personnel began to continue to control the aircraft to continue to accelerate and raise the flight altitude.


    "The test target flight altitude is 1100km and the flight speed is 730km! The airframe is in good condition, the aircraft engine output power is normal and the thrust is normal."


    "The target flight altitude is 12000 meters, the flight speed is 750 kilometers, the fuselage is in good condition, the aircraft fuselage structure is stable, and the aircraft engine output power is normal."


    “.........”


    Soon, the flight altitude of the aircraft reached the highest point of the theoretical value, that is, the altitude of 1300m and the flight speed of 800km. At the same time, the engine output power and fuselage and wings of the aircraft were very stable and there were no abnormalities.


    But seeing this issue, Professor Dai did not order the test pilots on the ground to stop the test flight, but asked them to continue to improve the flight altitude and speed of the aircraft.


    Although the flight altitude and speed of the aircraft have reached the theoretical limit value at this time, there is still some room for the engine, so the aircraft is still improving its speed and altitude.


    However, when the speed of the aircraft reached 853 kilometers and the flight altitude reached 13500 meters, the engine output power of the aircraft finally reached the real limit. With the increase of the aircraft altitude, the engine output power of the aircraft began to decline, and the aircraft also began to decline slowly with the decrease of the engine output power, Finally, when the flight altitude of the aircraft drops to 13300 meters and the flight speed stays at 830 kilometers, the altitude of the aircraft will not decline and the flight speed will not decline at the same time.


    Seeing this situation, both Professor Dai and Professor Zhang are very clear that this data is the real limit flight altitude and speed data of this aircraft after transformation.


    Of course, we are very satisfied with such flight limit data, whether Professor Zhang, Professor Dai, Qiu Tuan and others. After all, this is only an aircraft transformed from No. 9 transport aircraft. What else are they dissatisfied with if they can reach this level!


    According to the flight test procedure, when the aircraft flew at the limit flight altitude for nearly ten minutes, the flight control personnel on the ground finally controlled the aircraft and began to reduce the altitude. When the aircraft returned to the cruise altitude and speed, they kept it at this altitude for cruise flight again. After more than half an hour of flight, Professor Dai ordered the aircraft to return.


    So far, for the test flight, almost all the test flight work has been completed, and the rest is only landing. Wang Bin and others are not worried about any accidents. After all, the transformed transport plane No. 9 has a highly intelligent intelligent program, which can definitely make the plane land smoothly.


    of course! The end of this test flight does not mean that the test flight of this modified No. 9 transport aircraft has been completed. On the contrary, this is at least the first test flight. After this test flight, Wang Bin and his team must also conduct a more comprehensive inspection of the aircraft, that is, disassemble and test the aircraft to determine the real situation of the aircraft, After all, sometimes the data returned by sensors are not necessarily accurate, not to mention that although many sensors are installed on the aircraft, some places are not monitored, and these places need to be detected manually.


    At the same time, after the inspection, there will be many test flights. You know, although this test flight is the first test flight of the modified aircraft, it is only an unmanned test flight. Next, Sue will carry out a manned test flight,


    Therefore, before the test flight, Wang Bin and his team must conduct a more careful inspection of the aircraft. They can only conduct the first manned test flight when they are sure to be safe. After all, if they do not carefully inspect it, in case of any problems, the consequences will definitely be the destruction of the aircraft and the death of people, which is absolutely what no one wants to see again.


    While Wang Bin was thinking about this, the roar of the aircraft engine came from a distance, and the sound began to become louder and louder. At the same time, as the aircraft was getting closer and closer to Wang Bin, Wang Bin and they could finally see the aircraft.


    When the plane stopped at the end of the runway and turned off the engine under the control of the intelligent takeoff and landing program, both Wang Bin and Professor poke were greatly relieved. At the same time, Qiu Tuan and others clapped again.


    "Mr. Wang! Congratulations. I didn''t expect this No. 9 transport plane to have such excellent performance after transformation." Qiu Tuan said to Wang Bin with a clap of his hand.