The plane was then changed to level flight, because it was the first flight, the flight altitude and speed were relatively low, and this was the same for all new planes on their first flight.

After maintaining level flight for a period of time, it seems that it is about to fly far, and the test pilot is ready to turn, although many major changes have been made to the new aircraft, but there is not much change in the aerodynamic rudder surface compared to the J-7.

If it weren't for the restrictions of the first flight of the new aircraft, Yan Xiufu could have relied on his years of experience to make a beautiful small radius turn.

Seeing the plane that had just flown away, it flew back at this time, and the crowd raised their heads again and looked at the test plane that flew back from a distance.

The first flight subject was very simple, there were no big requirements, the flight time was not long, around the airport a few circles, because the first flight of the new aircraft for safety, the fuel only carried a considerable little point, as the fuel in the plane was about to run out, the first flight had to enter the end.

Seeing that the fuel gauge in the plane was running out, the test pilot knew that the fuel was running out, and he was about to prepare to land after adjusting the course and aiming at the runway under the command of the tower on the ground.

Suddenly, Chief Engineer Yu's voice came from the radio: "Comrade Yan Xiufu, in view of the fact that the tests of the first flight of the new aircraft are now going smoothly, according to the collective discussion of the command group of the first flight, it has finally been decided that if conditions permit, a low-altitude clearance can be carried out before landing. ”

After talking about the temporary decision of the first flight group, Chief Engineer Yu felt that it was not very safe, so he added another sentence.

"When you let it go, whether you want to carry out this low-altitude pass, or the test pilot, you personally decide, this is an additional project, and it is up to you, the test pilot, to decide whether to do it or not."

Hearing these two sentences on the radio, he was a little unwilling to Yan Xiufu and became energetic. That's right, the first flight of the new aircraft can be a little bold, this new aircraft is developed from the J-7, and the performance is absolutely reliable after flying for many years, so what else is there to worry about.

Check the condition of the plane again, although the fuel is running out. The pointer has reached the red zone, but there is nothing wrong with that, and the fuel is running out and not running out of fuel soon.

The fact that jet fuel runs out is only relative, in general. After the fuel gauge pointer points to the red zone, there is still some fuel. Now there is enough fuel left in the plane to get through, at least the fuel alarm has not sounded.

With these rigid indicators to ensure flight safety, Yan Xiufu made up his mind to make a full venue and give a big surprise to the guests on the viewing platform on the ground.

"Command group. Test pilot Yan Xiufu received the news and made a comprehensive assessment according to various indicators in the plane, and prepared to conduct a low-altitude clearance, with an altitude of 80. ”

When the ground first flight command group heard the test pilot's decision, it finally didn't have to worry about whether to carry out a low-altitude clearance.

To say why the ground command group dared to make such a decision this time, of course, it was carefully considered.

The first reason is naturally because the new aircraft has excellent performance and inherits the excellent bloodline of the J-7, which makes everyone have great confidence in the new aircraft;

The second reason is based on the previous conclusion of the first flight. The first flight has done very well in all flight items, so naturally you can try to increase the size. I don't know how many times I have flown this kind of thing in the low-altitude field on the model aircraft using the same aerodynamics, and I have tried to prove that the low-speed performance of the double delta wing is indeed excellent.

The last reason is the main problem, which is also the straw that breaks the camel's back: there are too many leaders participating in the first flight this time, if the first flight can not give the leaders a deep impression, then how to improve the status of the base in the hearts of the leaders in the future.

In addition to the first flight, these big leaders can be invited to participate this time, and it is impossible to call the leaders to watch other subsequent test flight subjects, right? Therefore, it is necessary to seize this opportunity to show the most outstanding performance of the new aircraft, which is the reason for risking to increase the low-altitude field project.

The new aircraft uses a double delta wing, compared to its main domestic fighter. The most prominent feature is the low-pass flight performance, since the low-altitude performance is the main signature of the new aircraft, it is natural to show this point vividly.

At this time, it is the best choice to do a low-altitude pass, although almost most aircraft can do a low-altitude pass. But to be able to make such a move on the first flight is awesome, so that the excellent low-altitude performance of the new aircraft can be well demonstrated.

Chief Engineer Yu stood up and left the command group and walked to the runway, now the command team no longer needs him to be in charge, he now needs to come to the viewing platform to witness this exciting moment with the leaders.

"Chief Designer Yu, this first flight is coming to an end, right? It seems that your first flight was very successful, not bad, very good. This was a member of the military who had been sent to attend the first flight, and the first flight of the new plane had made a very good impression on him. At least this new machine is a new machine with a qualified design, as long as there are no major problems in the follow-up design, there is no difficulty in making a training aircraft.

Chief Engineer Yu, who walked to the viewing platform, said to the guests: "The first flight of the new aircraft has not yet been completed, and there is still a trial project, so let's wait and see." ”

As soon as the words fell, the first plane, under the pilot's pilot, slowly flew from afar. That's right, it is to fly slowly, and the new aircraft emphasizes low-altitude flight performance, and natural low-altitude and low-speed performance is one of them.

Seeing that the first plane did not land, but flew towards the viewing platform at a low altitude, is this the last flight of today's first flight?

The first flight of the new aircraft made such a flight project, which surprised a bunch of audience members on the stage and raised interest, which was the most exciting project of this first flight.

Although the word supersonic speed is not added to the low-altitude flight, it is enough, and the shrill roar of the engine is equally impressive.

"This is to pass through the field at a low altitude, Chief Designer Yu, it seems that your confidence in the new aircraft is not ordinary, you dare to do such a project on the first flight, and you can be regarded as the best first flight of the Republic in so many years."

With the roar of the engine, the first plane floated handsomely in front of the viewing platform, and the entire viewing platform was boiling, this is the handsome posture that a new aircraft should have, and this low-altitude and low-speed performance is absolutely impossible to find a second one among the Republic fighters.

It seems that it is really necessary and necessary to change this aircraft back to a single-seat fighter.

The performance of everyone on the viewing platform gave Chief Teacher Yu a lot of confidence, so that's right, isn't it easy and quick to win support after watching the performance of these guests?

"Yes, our new aircraft has excellent performance, especially at low altitudes, and we have already carried out several unmanned test flights of the new aircraft before this first flight."

After listening to this statement of Chief Engineer Yu, the guests were extremely curious about this new term of high-end atmosphere, what is this unmanned test flight? I don't think I've heard of it, so it's hard to think that there is some new technology.

"Yes, we combined the advantages of our base according to local conditions, reduced the aerodynamics of the new aircraft in proportion, made several model airplanes, and carried out some test flights of the aerodynamics of the new aircraft in advance, which is more realistic than the wind tunnel test."

After listening to this explanation, they all nodded as if they didn't understand, this new method does sound like some truth, but I haven't really seen it, and this point will be left for later research.

Put aside the curiosity about this new test flight technology, endure the curiosity, and watch the landing of the new first flight first.

After the test pilot cleared the field, he re-aligned the runway, calibrated the flight attitude and began to land, and the landing gear was not retracted at all after takeoff, so naturally there was no need to put down the landing gear.

The rear landing gear of the aircraft landed first, and the impact of several rounds on the ground was quickly transmitted to the cockpit, and the rear landing gear was felt to hit the ground, and the speed continued to decrease, and the front landing gear was pressed down again, and the aircraft landed completely, and the remaining inertial thrust continued to slide forward with the new aircraft, and finally, it stopped steadily in front of the viewing platform. (To be continued.) )