"Qin Feng, how is it, do you want to give it a try?" At this moment, Tu Lao said to Qin Feng with a smile.

Hearing this, Qin Feng hurriedly shook his head: "No, Tu Lao, I didn't participate in the research and development of this aircraft, and I am not very familiar with its various data, so let's let the original test pilot fly." ”

The first flight of a fighter is of considerable significance, although the J-7 in front of it is a modification, but it is already the most important modification, because it changes the aerodynamic layout of the entire fuselage, and this improvement will also go down in history.

Whoever comes to test fly it, who will leave his own name, in the history of the development of the aviation industry, it is quite meaningful, Qin Feng is now busy with a lot of projects, not mixed with the test flight of this aircraft, or let the original test pilot to fly.

Hearing this, Tu Lao said with a smile: "Why didn't you participate in research and development? This aircraft from the project proposed, you began to follow up, after that, you have participated countless times, put forward a lot of constructive plans, in particular, in the structure of the double delta wing, the addition of the wing leading edge maneuvering flaps, has also been identified as indispensable, now let me tell you, in fact, the first flight of this aircraft is scheduled to be the test pilot, originally you, if there is no you, there will be someone else. ”

The double delta wing is to form two different angles on the wing to increase the wingspan, which is an important improvement, and in the improvement, with the deepening of the research, Professor Sha also found many problems.

For example, in the blowing tunnel, with the increase of the aircraft's angle of attack, the outer wings of the double triangle wing will be separated by airflow, which will have an adverse impact on the pitch stability of the whole aircraft.

In the past, the J-5 and J-6 used wing knives to hinder this airflow separation, but after analysis and research by Professor Sha and experts, they believed that they could solve this problem by adding motorizing flaps, and its deflection angle could be automatically deflected to the required angle in time with the flight status of the aircraft in flight, so that the problem of airflow separation could be solved.

This is quite a complicated job, because the J-7 does not have fly-by-wire flight control, and this maneuvering flap is automatic, and it must have a reliable control system, and it took them several years to overcome this technical difficulty.

In terms of the selection of test pilots for the first flight of the aircraft, if Qin Feng can come, of course he is the best, don't look at him not being in this project every day, but he is absolutely familiar with the use of every technology in the project, he is also very familiar with the flight operation of the third-generation aircraft, and is an experienced flight veteran.

The J-7E in front of him, after the first flight, will be transferred to the test flight institute, that is to say, Qin Feng can also continue to test this kind of aircraft in the test flight yard, and it will not affect his flight of the J-7 and J-8 tankers, after all, flight missions cannot be every day.

This time, since Qin Feng is here, the scheduled chief test pilot is Qin Feng.

Hearing Tu Lao's introduction, Qin Feng finally couldn't hold back his excitement: "Since you have decided to let me go, then I'm not welcome." ”

After speaking, Qin Feng quickly ran to the familiar pilot preparation room, went there to change into a flight suit, and prepared for the first flight!

Everyone looked at his back, their faces were full of smiles, as long as Qin Feng was there, everything was not difficult, he was a person who could create miracles.

Besides, everyone is very confident in their own plane.

Qin Feng put on all kinds of equipment, and when he took the first flight plan, he also felt the confidence of the aircraft designers.

If it is a normal first flight, it will go down after a circle in the sky, but now, this J-7E is also a modification, and since it goes to the sky once, it must reflect its performance, so this first flight has a lot of flight items.

Qin Feng was still very satisfied with the arrangement of this test flight, he was ready, stepped onto the plane in great strides, and then saw the familiar instrument in the cockpit, which also had an unusual indication.

Qin Feng has already read all kinds of technical information of this aircraft, this aircraft has a lot of new features, although the appearance does not seem to have changed much, in fact, it has been given a new mission, for example, its wing modification, not only to improve maneuverability, at the same time, but also to change the internal structure, inside the wing, the overall wing fuel tank is designed!

For an aircraft, the range is largely related to the amount of fuel carried, and the air forces of many countries will have a hard target for the range, for example, the air force of Pakistan would rather have one less cannon and increase the fuel load.

The wing of the J-7E is redesigned, so there is a new scheme, which makes the interior hollow and places the overall fuel tank inside, which can greatly increase the fuel load of the fighter!

In fact, this is already a common way in many countries, take the MiG-29 as an example, the space in its fuselage is quite limited, the fuel load is very small, and most of the fuel is placed in the wing.

This is the first time that this kind of wing fuel tank has not been made in China, just this change, coupled with the external auxiliary fuel tank, can make the J-7 have a maximum range of more than two thousand meters, and even exceed the range of the J-8, which is also a great progress.

Qin Feng sat in the cockpit, suppressed his excitement, and began to make normal preparations for takeoff.

When I came back from the Soviet Union, I saw a lot of advanced fighters in the Soviet Union, no matter how advanced they were, they were also theirs, and the current fighters were domestically produced, low cost, and could be equipped in large quantities, and there would be no risk of being stuck.

Everyone on the ground stared at the plane, the cockpit canopy slowly closed, the turbojet-13 engine in the tail was successfully ignited, and Qin Feng operated the plane and slowly slid towards the runway.

The first flight of the J-7E is slowly kicking off, and the first domestically produced model with superb maneuverability and close combat with the F16 fighter spreads its wings and waits for a blow to the sky.

In the cockpit, Qin Feng heard the roar of the engine in the tail, although it is not as advanced as the F404 engine, but the thrust of the turbojet-13 engine has been improved compared with the previous turbojet-7, and it can even make this aircraft have a thrust-to-weight ratio close to 1.