Tu Kai nodded with satisfaction and said, "That's good." Pen & Fun & Pavilion www.biquge.info by the way, less, let me introduce you, this is Xiao Yang of the 611 Institute, a top student of Western University of Technology. ”

The test pilot surnamed Yu suddenly smiled, stretched out his hand and said: "Hello, I am Yu Hongfei, a test pilot of the test flight team of the Air Force stationed in Factory 132. ”

Yang Weining shook hands with Yu Feihong with a smile and said, "Hello, my name is Yang Weining, and I have just joined the 611 Institute. ”

Tu Kai said on the side: "Less, don't look at Xiao Yang's young age, he is a rising star of the 611 Institute, and his attainments in the field of computer programming are very high, and there may be many opportunities for the two of you to deal with each other in the future." ”

Yu Hongfei said with a smile: "Yang Gong, if there is any problem with our flight control fire control in the future, I will have to trouble you a lot." ”

Yang Weining hurriedly said: "I don't dare to do this." ”

The two politely said a few words, Tu Kai gathered everyone at the scene again, and said: "J-7B flies two more sorties, the engineering test flight is about to end, and the next thing is the finalized test flight of the test flight institute, everyone must take care of it, this fighter is the main model we export next, and users in Egypt, Iraq, and Jordan have already paid a deposit, don't have any problems." ”

"Okay. ”

Everyone nodded in agreement.

Yang Weining couldn't help but sweat slightly, he thought at first that this was just an ordinary J-7II. fighter, but he didn't expect this to be the export version of the J-7II.

After careful observation, he found that this fighter retains a small window at the rear of the cockpit of the J-7I fighter, but there is no such small window on the J-7II.

The J-7II's export fighter is also known as the J-7B, and if history is correct, this fighter should have made its first flight in May this year, using a turbojet-7B extended-life engine.

In addition, after the J-7B fighter is equipped with an imported fire control system, it can be equipped with Western short-range air-to-air missiles, mainly French Magic R.550 short-range air-to-air missiles, and can also be equipped with domestic Thunderbolt-2 missiles, so the missile weapons carried have also become a powerful basis for identifying this model.

J-7B fighters have been exported to Iraq and Sudan, and the J-7A exported to Egypt has some additional performance requirements from Egyptian customers before the last 40 are delivered, so these fighters have also been upgraded according to the J-7B standard.

Later, it was reported through the grapevine that Egypt's J-7B fighters had engaged in a simulated confrontation with the US F-14 "Tomcat" and had achieved the "results" of hitting the US planes three times.

Yang Weining is skeptical of this news, unless the two fighters directly enter the close-range combat, otherwise in the over-the-horizon air combat, the J-7B basically has no chance of winning in front of the Tomcat.

The only actual combat in the history of the J-7B took place in the Iran-Iraq war, and the Iraqi J-7B played a certain role in the battle with the Iranian Air Force.

Interestingly, the United States also once purchased a batch of J-7B fighters from China.

After entering the 80s, China and the United States entered a honeymoon period, and the relations between the two countries warmed up significantly.

As part of a series of military-technical cooperation between China and the United States, the United States has purchased 15 J-7B fighters from China.

The aircraft are equipped with the Air Force's 4477 Red Hawk Test Evaluation Squadron at the Tonopah Test Range northwest of Las Vegas and are used to simulate imaginary enemy forces.

After the end of the Gulf War in 2003, the U.S. Air Force also shipped two captured Iraqi Air Force J-7B aircraft back to China for testing.

Until the twenties of the 21st century, the Chinese-made J-7 fighter was still an important choice for many third world countries.

Although from Yang Weining's point of view, the J-7B is far from constituting the standard of advanced fighters, but in this era, this is the only advanced fighter he can come into contact with.

couldn't help but feel a little itchy in Yang Weining's hands, as a pilot, the plane was like his wife, and he always felt uncomfortable when he saw his wife not going up to get close.

Just as Yang Weining wanted to ask Tu Kai for permission to enter the cockpit of the J-7B to experience it, a technician who looked to be twenty-eight or nineteen years old suddenly raised his hand and said: "Tu Gong, there seems to be a problem with the fuselage temperature data I have detected here." ”

Tu Kai was slightly stunned: "Xiao Liu, what's wrong?"

Xiao Liu said: "It's really strange, the temperature of the rear fuselage detected today is more than ten degrees higher than the temperature detected during the previous test flight, and this has never happened before." ”

"Ten degrees should be considered a normal temperature error range, right?" someone said.

Xiao Liu shook his head and said: "But I always feel that it is wrong, you must know that the maximum error of the temperature detected in the past is in the range of five degrees, I just took the average value, and the temperature difference is fifteen degrees higher." ”

"What I did today is an afterburner test flight experiment, will it be the increase in fuselage temperature caused by supersonic flight, this should be considered a normal phenomenon. Someone else said.

Xiao Liu said: "But according to the detection of the temperature indicator, the temperature of the front fuselage is still in the normal range, and the temperature of the rear fuselage is much higher than usual." ”

Tu Kai frowned, thought for a moment and said: "The flight test of the aircraft is very important, and any problems cannot be missed, let's go back and do a check, and do a fatigue strength test on the strength of the body and the engine blades to see if there are any problems." ”

"Okay. ”

Everyone had no choice but to get busy again.

At this time, Yang Weining stopped Xiao Gong, who was about to leave: "Liu Gong, wait a minute, can you show me the data?"

Xiao Liu was slightly stunned, couldn't help but look at Tu Kai, and saw Tu Kai nodding, so he handed the data to Yang Weining.

Yang Weining took the test flight record sheet and glanced at it twice, then lowered his head and pondered.

Tu Kai was puzzled: "Wei Ning, do you have any ideas?"

Yang Weining waved his hand and said, "Uncle Tu, wait a minute." ”

He was thinking about how to organize the language to express it.

In fact, when Xiao Liu mentioned the problem of the temperature rise in the rear fuselage just now, Yang Weining had already realized what was wrong with the plane.

In later history, the engine defects of the J-7II were not discovered until ten years later.

In June 1991, the Chinese Air Force found that the rear fuselage of the J-7II was damaged by fire due to the increase in engine temperature, causing a large-scale grounding, and the Rongcheng Aircraft Industry Company (formerly Rongcheng Aircraft Factory) found out the problem after half a year of targeted test flights, and from January to May 1992, it sent personnel to the Navy and Air Force to repair the J-7II in service, so that the aircraft could return to normal use. The J-7 series, which was produced after 1992, was similarly improved, and no such incidents have occurred since then.