The seminar was held as scheduled and was located in the assembly building.
Zhou Yan didn't have a pass for the car he had, so he had to get up early, have breakfast at his tutor's house, and then take the car to go.
When he arrived at the place, Zhou Yan experienced what "no one in the world knows you" means. There were acquaintances everywhere greeting the teacher.
In the conference room, other people who arrived early stood up when they saw Liu Yiming.
"Old Liu!"
"Mr. Liu..."
"Old Liu, is this your proud disciple Zhou Yan?"
"Don't dare to take it seriously..."
In a military center, everyone sat down together after just a brief exchange of greetings.
After a while, people from the Air Force and General Assembly entered the conference room one after another.
The meeting hasn't started yet, so we need to sign a confidentiality agreement before getting down to business.
"I invite everyone here today because some progress has been made regarding the key technologies of the sixth-generation aircraft. The leaders above would like to take this opportunity to discuss the technical standards of the sixth-generation aircraft and discuss what other technologies need to be tackled. .
Mr. Yu from Shen Fei, please have a chat first..."
"I personally think that sixth-generation aircraft must be at least more advanced than fifth-generation aircraft. What fifth-generation aircraft have, sixth-generation aircraft must have, and they must be more advanced.
For example, there are already promising variable-cycle adaptive turbofan engines, which can not only achieve supersonic cruise, but also enable aircraft to have good fuel economy and expand combat radius.
Secondly, sixth-generation aircraft can be networked with drones that are becoming increasingly mature.
Another point is that the aerodynamic shape is better than that of the fifth-generation aircraft, otherwise how can it be worthy of the variable cycle adaptive turbofan engine..."
The faces of the Chengluoma executives not far from Shen Hoy darkened at a speed visible to the naked eye.
Unfortunately, Zhou Yan was right.
Shen Huoyi threw bricks and became Luo Ma's comrades, so naturally he had to continue with jade.
"Mr. Yu just said it well, I would like to express a few small opinions.
Networking with UAVs, transmission control, fire control and data links are the key. Coupled with high-power phased array radar, the combat effectiveness of fighter jets will be even higher..."
Senior executives of several other aviation companies saw that the two companies were at loggerheads and did not dare to speak out for fear of being covered in blood or being targeted by both companies at the same time.
"Yihua" who presided over the meeting also saw signs that the two families were at odds with each other. He frowned, thought for a while, and turned his attention to Liu Yiming.
"Mr. Liu, what do you think?"
"Chief, I just make engines, and I only talk about things I'm familiar with.
The basic theoretical construction of the variable cycle adaptive turbofan engine has been completed, and the physical model has been verified through experiments.
The next work is to carry out preliminary design based on the model...
According to personal research, compared with current small bypass ratio turbofan engines, variable cycle engines require higher material strength near the variable cross section.
Moreover, the outer diameter of the fan is required to be no less than 1500 mm. Otherwise, it will affect the overall efficiency when the flow rate of the engine's outer duct changes.
Another point is that if the variable cycle engine can be combined with movable swept wings or forward swept wings, it can maximize its efficiency..."
Zhou Yan, who is sitting next to his tutor, has always been honest, fearing that "the teacher will ask him to answer questions".
But whatever you fear will come to you.
"Mr. Zhou, the basic theoretical framework of the variable cycle adaptive turbofan engine comes from you. What do you think of the sixth-generation engine?"
Having been pointed out, Zhou Yan has no way to escape.
"The beautiful country's F-22 originated from the ATF program in 1986. The design required indicators to create a generational difference between the MiG-29 and Su-27 that were used in the past.
Later, during the project process, it was constantly modified and evolved into the so-called 4S.
But to this day, the F-22 does not have a generational advantage over the Su-27 in some key data..."
Hearing this, many people present stared at Zhou Yan thoughtfully.
"Moreover, in fact, the current F-22 is still far from the expected design goals.
In recent years, a wooden barrel theory has emerged, which states that how much water a wooden barrel can hold depends on the shortest piece of wood that makes up the barrel.
There is no doubt about the F-22's stand-alone combat capabilities, but what if it is put into large-scale air combat?
What if the previous generation of enemy aircraft were coordinated by early warning aircraft or had superior electronic systems, and their number was four times or even six times that of the F-22 fleet?"
The reason why Zhou Yan increased the number by four times or six times is because the F-22's bomb load is four at mid-range and two at close range. If there are more enemy planes, the F-22 can be piled to death...
"There is another problem. The F-22 fighter itself can create a generational difference compared to the fighters of the same period, but its firepower cannot create a generational difference..."
"What about?" the major general presiding over the meeting asked with a smile.
"Equip our J-11 with four higher-end decoy bombs and empty the F-22's magazine. Then, even if it is a fifth-generation aircraft, will it still be at our disposal?"
The senior management of Chengluomar present were so frightened that they broke out in a cold sweat. After that, they felt lucky: Fortunately, everyone had signed a confidentiality agreement.
"Mr. Zhou, please continue..."
"If we study the F-22 carefully, we will find that this thing is not an offensive spear, at most it is a dagger that can be used for sneak attacks. Moreover, the F-22 is more suitable for participating in asymmetric local wars rather than conflicts between major powers.
.
Therefore, I personally feel that this sixth-generation aircraft, at least in terms of firepower, can form an advantage over the F-22."
In fact, Zhou Yan has two ideas regarding the firepower confrontation between sixth-generation aircraft and fifth-generation aircraft: one is to use decoy bombs to consume the magazine of the fifth-generation aircraft; the other is to use airborne missiles for anti-missile.
However, using airborne missile anti-missile requires the missile to maneuver at high speed, and the missile body needs to be very large. Although high-energy propellant can be used to reduce the missile body, the cost of air-to-air missiles as consumables will go up.
…
However, now that the problem has been thrown out, Zhou Yan is too lazy to think again: there are so many geniuses in the military industry system, whether he participates or not, it does not affect the overall situation.
"I have a question," the Major General looked at Liu Yiming, "Mr. Liu, if the thrust of the variable cycle engine is required to reach 180 kN and the thrust-to-weight ratio is more than ten, how long will it take to build a prototype or technology verification machine?"
Liu Yiming looked back at Zhou Yan.
"Two years at most. If necessary, the time can be compressed..."
"Oh, so Qingyan already has a mature plan?" The major general was overjoyed.
"You can say that……"
As soon as Zhou Yan's words came out, the faces of many experts who were studying aviation engine power changed, and they all turned their inquiring eyes to Liu Yiming.
"I don't know much about this. Zhou Yan said that two years is not a big problem..."
"Mr. Zhou, I remember that you, Qingyan, seem to be engaged in the research and development of drones. How is the progress..." The major general seemed to break the casserole and asked the end.
"In two months, the long-range drone will be tested," Zhou Yan was slightly proud. "By the end of the year, the drone with a payload of one ton will be able to complete the test flight."
"Oh," the major general nodded and continued other topics...
In the morning seminar, we just roughly outlined the technical units.
But in the afternoon, the assembly people made comparative calibrations of the performance parameters of the sixth-generation machine with reference to the performance parameters of the fifth-generation machine.
Approximate empty weight, combat radius, cruising range, data link transmission speed...
The next day, the data calibration was completed, and Zhou Yan also breathed a long sigh of relief: the data were all within the range of his estimate...
