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And Wang Bin naturally knew clearly that there were indeed no high-altitude and high-speed projects in today's flight test subjects, that is, there were no test flight projects with an altitude of more than 10,000 meters and a speed exceeding Mach 1, so Wang Bin nodded. Master Qiu said: "Master Qiu! Tell the crew to reduce the speed and altitude!"

While Wang Bin and Qiu Shi were talking, the speed of the plane had reached Mach 0.98, and the altitude had also reached an altitude of 10,000 meters, which means that the speed of the plane had reached The limit of subsonic speed, as long as you use a little more force, the aircraft can break through the silver medal and reach a speed of Mach 1.

However, at this time, the crew of this aircraft also obviously knew that there was no supersonic test flight project or high-altitude test flight project in today's flight test subjects, so after reaching this speed, the Phoenix-1 No. He didn't continue to accelerate, but kept the speed and altitude of the plane at this stage. When Master Qiu ordered to reduce the altitude and speed, the crew of the plane lowered the plane's altitude and speed a little.

But even so, the altitude of this aircraft is still maintained at about 9,000 meters, and the flight speed is also maintained at about Mach 0.9.

Although the airframe is the first test flight of this aircraft, all kinds of data during the flight test are very good. , the data was also unusually stable, which made Qiu Shi and the others smile. It was obvious that they were very satisfied with the flight performance of the aircraft at subsonic speeds.

Afterwards, everyone noticed that the speed of the plane began to drop again at this time, but the altitude did not change. When the speed of the plane dropped to Mach 0.7, the Phoenix-1 No. 1 plane began to perform various actions. The flight test subjects include large radius turns, small half-turns, rapid ascent, rapid descent, minimum high-altitude flight speed, etc.

As the flight subjects were carried out one by one, until all the flight projects were completed, the Phoenix No. 1 plane finally began to return, but both Wang Bin and Qiu Shi and others noticed that at this time, the plane The plane still has a lot of fuel. According to the fuel data of this plane, nearly three-quarters of the fuel on board has not been consumed yet.

If the operation is performed according to the normal flight conditions of the aircraft, the fuel on the aircraft should be basically emptied before landing before the aircraft lands.

However, on the way back, the Phoenix No. 1 plane flew over the sky above the Tiangong Science and Technology Base, and did not release any fuel. This made Qiu Shi and others start to get nervous again.

So he asked Wang Bin: "Mr. Wang! Now this plane still has more than three-quarters of its fuel. In your flight test subjects, is there no such thing as emptying the fuel and descending?"

After Wang Bin listened to Master Qiu's words,

Nodding his head, he said: "Indeed! In this flight test subject, there is no subject of emptying fuel, and according to our design data, our aircraft can be carried out safely even when it is fully fueled. Landing, even with a full tank of fuel, the plane has no problem taking off and landing, it's just that when it lands, it needs to roll a little longer."

"What? There is really no fuel dumping subject! Is it too dangerous to land like this? After all, landing with an empty plane and landing with a small amount of fuel and a large amount of fuel are completely different concepts! This is for the aircraft. Landing safely has a very big impact! If there is a slight malfunction in the plane, the fuel inside it may definitely destroy the plane!

No, Wang Bin, you immediately ask Zhao Feng to empty the fuel inside the aircraft before landing. "Master Qiu said anxiously.

At the same time, the military personnel inside the command center were also very anxious, and they all hoped that Wang Bin would order the crew to drain the fuel on board.

"Master Qiu! And everyone, I think even if I give the order right now, it's already too late, the plane has already started to descend!" Wang Bin said.

No, when Wang Bin and others were talking, the altitude and speed of the plane were already very low, and the plane was already facing the runway of the base, and it was descending rapidly. When Wang Bin and others looked at the plane, At that time, the plane was already less than 30 meters above the ground of the runway.

Seeing this situation, neither Wang Bin nor Qiu Shi and the others stopped talking, but fixed their eyes on the landing plane, because they knew that they must not disturb the pilot at this time. , and to this extent, even if they ordered the crew to put the fuel in, the crew would have no time to drain the fuel.

Fortunately, the landing of the plane was very smooth and smooth, and there was no abnormality in personnel, and finally landed safely on the runway.

At this time, Qiu Shi and the others were obviously relieved, but immediately, he said to Wang Bin with a serious expression: "Mr. Wang! Since the plane has landed safely today, I won't say anything more. However, in the future test flight, if it is not really necessary, please do not conduct such a dangerous subject."

At this time, Master Qiu couldn't see that the landing of the oil carrier was one of the flight test subjects arranged by Tiangong Technology, but Wang Bin was afraid that they would object, so he didn't pay attention to this during the flight test subjects. project, so I said.

Wang Bin nodded and said: "Master Qiu, don't worry! We have already collected the data on the aircraft's fuel landing. If there is no accident in the future, we will not conduct such subjects. For example, tomorrow's test flight project will be There is no such item. And in the flight test operation instructions, it has been clearly stated that after the test flight is over and the mount is landed, the fuel of the aircraft must be kept at the lowest alert level before landing is allowed.”

With the end of the test flight, the ground crew brought by Tiangong Technology and Qiu Shi immediately towed the plane to the special hangar for this plane, and began to conduct intense inspections on the condition of the plane.

You must know that due to the relatively long time of this test flight, which lasted more than half an hour, there were also many subjects and the intensity of the test flight was relatively high. In addition, this aircraft will conduct more subjects and higher intensity tomorrow. flight, so they must complete all inspections of this aircraft before tomorrow, to ensure that the aircraft can conduct a test flight tomorrow, and also to ensure that the inspection work is in place without any negligence, otherwise, Once there is a problem tomorrow, it is absolutely unacceptable to them.

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