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As the plane flew over the sea, the flight control platform was also displaying the flight data of the No. 9 transport plane at this time, and the flight control personnel were also reporting the flight data of the plane in real time.

"The plane is flying at an altitude of 3,000 meters, at a speed of 550 kilometers per hour, and its fuel consumption per second..."

And Wang Bin, Professor Dai, Professor Zha and others also quietly stopped reporting the data, and judged the aircraft's data in real time.

"Mr. Wang! The flight data of this No. 9 transport plane after the modification is really good, at least much better than the data before the modification, although the flight speed of the aircraft has reached the cruising speed before the modification. , but during the flight of the aircraft, the airframe and wings were very stable, and there was no vibration, etc., and even the sound of the engine was not loud, and no abnormalities were found. The situation is still very good!" Professor Dai Kunlun said softly to Wang Bin after checking the flight data.

"Indeed! The current condition of the aircraft is still very good, but at this time the aircraft has not yet reached the cruising speed on the data, and the altitude is only about 3,000 meters. Wait until the flight speed of the aircraft reaches the limit and the altitude reaches the limit. Only then can we judge the overall situation of the plane." Wang Bin nodded and said.

As Wang Bin and others chatted, the speed and altitude of the plane began to increase again, and soon the plane reached the cruising altitude and speed, that is, an altitude of 10,000 meters and a flying speed of 600 kilometers.

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

But fortunately, even if the plane has reached the cruising speed and altitude at this time, the condition of the plane is still very good. According to the data sent back by the sensors on the plane, the overall condition of the plane, including the skin, fuselage and Structure, etc., there is no abnormal situation.

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

The next step is to look at the maximum limit value of the aircraft, so following Professor Dai's order, the flight controllers began to continue to control the aircraft to continue to accelerate and increase the flight altitude.

"The target flight altitude of the test is 11,000 meters, and the flight speed is 730 kilometers! The airframe is in good condition, the output power of the aircraft engine is normal, and the thrust is normal."

"The target flight altitude is 12,000 meters,

The flight speed is 750 kilometers, the fuselage is in good condition, the structure of the aircraft body is stable, and the output power of the aircraft engine is normal. "

"..."

Soon, the flight altitude of the plane reached the highest point of the theoretical value, that is, an altitude of 13,000 meters and a flight speed of 800 kilometers. Abnormal.

It's just that after reading this issue, Professor Dai did not order the test pilots on the ground to stop the test flight, but let him continue to increase the flight altitude and speed of the aircraft.

Although the flight altitude and speed of the aircraft have reached the theoretical limit values ​​at this time, the engine still has a certain margin, so the aircraft is still increasing its speed and altitude at this time.

It's just that when the speed of the plane reaches 853 kilometers and the flight altitude reaches 13,500 meters, the output power of the plane's engine finally reaches the real limit, and as the plane's altitude rises, the power of the plane's engine On the contrary, the output power began to drop, and the plane also began to drop slowly with the output power of the engine, and finally when the flying altitude of the plane dropped to 13,300 meters, the flying speed stayed at 830 kilometers At this time, the altitude of the aircraft will no longer drop, and the flying speed will no longer drop at the same time.

Seeing this situation, whether it is Professor Dai or Professor Po, it is very clear that this data is the real limit flight altitude and speed data of this aircraft after modification.

Of course, Professor Po, Professor Dai, Qiu Tuan and others are very satisfied with such flight limit data. After all, this is just an aircraft transformed from the No. 9 transport plane. What's not to like!

According to the flight test procedure, when the plane flew at the limit flight altitude for nearly ten minutes, the flight controller on the ground finally controlled the plane to begin to lower the altitude, and when the plane returned to the cruising altitude and speed, it was maintained at this altitude again. After more than half an hour of cruising flight, Professor Dai ordered the plane to return.

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

certainly! The end of the test flight this time does not mean that the test flight of the modified No. 9 transport aircraft has ended. On the contrary, this is at least the first test flight. A more comprehensive inspection is to disassemble the aircraft and test it to determine the real situation of the aircraft. After all, sometimes the data returned by the sensors may not be accurate, not to mention that although many sensors are installed on the aircraft , but there are still some places that have not been monitored, and these places need to be detected manually.

At the same time, after the inspection is completed, several test flights will be required. You must know that although this test flight is the first test flight of this remodeled aircraft, it is only a pilotless test flight. What Su will do next It's a manned test flight.

Therefore, before the test flight, Wang Bin and the others must conduct a more careful inspection of the aircraft. Only when everything is safe can they conduct the first manned test flight. After all, if there is no careful inspection, if something goes wrong, the consequences will definitely be serious. It was a plane crash and death, which is definitely something no one wants to see again.

Just when Wang Bin was thinking about this, the roar of the plane engine came from a distance, and the sound became louder and louder. At the same time, as the plane got closer and closer to Wang Bin and the others, Wang Bin and the others also Finally the plane can be seen.

When the plane stopped steadily at the end of the runway under the control of the intelligent take-off and landing program, and turned off the engine, both Wang Bin and Professor Po, etc., were greatly relieved. Applauded.

"Mr. Wang! Congratulations to you all. I never thought that the No. 9 transport plane would perform so well after modification." Qiu Tuan happily clapped his hands and said to Wang Bin.