Chapter 374 (1/2)

Wang Bin naturally knew clearly that there was no high-altitude and high-speed project in today's flight test subjects, that is, there was no test flight project with an altitude of more than 10000 meters and a speed of more than Mach 1. Therefore, Wang Bin nodded and said to Qiu Shi: ”Qiu Shi, tell the crew to reduce the speed and height!”

While Wang Bin was talking to Qiu Shi, the speed of the aircraft had reached Mach 0.98 and the altitude had reached 10000 meters. That is to say, the speed of the aircraft had reached the limit of subsonic speed. With a little effort, the aircraft could break through the silver seal and reach a speed of Mach 1.

However, at this time, the crew of the aircraft obviously knew that there were no supersonic flight tests or high-altitude flight tests in today's flight test subjects. Therefore, after reaching this speed, the phoenix-1 aircraft did not continue to accelerate, but maintained the speed and altitude of the aircraft at this stage until division Qiu ordered to reduce the altitude and speed, The crew of the plane only reduced the altitude and speed of the plane.

However, even so, the altitude of the plane was maintained at about nine kilometers, and the flight speed was maintained at about Mach 0.9.

Although the airframe is the first flight test of the aircraft, all kinds of data during the flight test are very good. Even when the aircraft has just reached 10000 meters and the speed has reached Mach 0.95, the data are abnormally stable during the flight, which makes Qiu Shi and others smile. It is obvious that, They are very satisfied with the flight performance of the aircraft below the speed of sound.

Then, we noticed that at this time, the speed of the aircraft began to decline, but the altitude did not change. When the speed of the aircraft decreased to Mach 0.7, the phoenix-1 aircraft began to carry out various action test subjects, such as large radius turning, small half turning, rapid rise, rapid decline, minimum high-altitude flight speed, etc.

With the progress of flight subjects one by one, until all flight items are completed, the Phoenix 1 aircraft finally begins to return. However, both Wang Bin and Qiu Shi have noticed that there is still a lot of fuel in the aircraft at this time. According to the fuel data of the aircraft, nearly three-quarters of the fuel on the aircraft has not been consumed.

If the aircraft is operated according to the normal flight conditions, the aircraft should basically drain the fuel before landing.

However, on the way back, the phoenix-1 plane flew over the Tiangong science and technology base without any oil discharge, which made Qiu Shi and others nervous again.

So he asked Wang Bin, ”Mr. Wang, there are still more than three-quarters of the fuel in this plane. Is there no subject in which the fuel is emptying and falling in your flight test subjects?”

After listening to Qiu Shi's words, Wang Bin nodded and said: ”Indeed! There is no subject of emptying fuel in this test flight. According to our design data, our aircraft can land safely even when it is full of fuel. Even when it is full of fuel, there is no problem in taking off and landing, but the taxiing distance is long when landing Just some. ”

”What? There's really no fuel discharge subject! Is it too dangerous to land like this? After all, it's a completely different concept for an empty aircraft to land with a small part of fuel and a large part of fuel! This has a great impact on the safe landing of the aircraft! There must be a little failure of the aircraft, and its internal fuel may definitely make The plane is doomed!