Briefly introduced the aerodynamic layout of the drone that Yang Hui envisioned to the fifteen people who were dispatched, and saw that everyone nodded thoughtfully, and some of them also drew three views in their notebooks according to the shape described by Yang Hui.

Yang Hui took a general look at these three views, and found that these were already eight or nine or ten, so he released the drone model he built with CATIA, and the conference room after turning off the lights looked dark, only the graphics on the curtain were the most eye-catching.

The elongated fuselage, with hardly any protrusions, looks like a cruise missile, and even the nose is not a pointed cone, but a sleek semi-circular ball.

Immediately after the nose is an optical observation device, then the fuselage section, where the flat wing with an upper monoplane layout is arranged, and the rear is the camber twin vertical tail, and the rear is the pusher propeller.

That's right, the aerodynamic shape design of this drone is according to the shape design of Hermes, the difference is that it is smaller than Hermes in terms of physique, but this is indeed the most suitable aerodynamic shape design for Southwest Science and Industry.

Yang Hui can naturally directly take out the BWP01 artillery reconnaissance drone of the Republic of China in the future, but this UAV is not too suitable for the base in terms of aerodynamic design.

Seeing such a concise aerodynamic design, everyone compared it with the simple diagram they just drew, only to find that they imagined that the aerodynamic shape was more complex than the pre-planned aerodynamic shape of others, and the design of complex aircraft was so concise, which is the embodiment of technology.

"The plane wasn't designed to the landing gear? It's ready for how to take off. It's kind of funny. ”

When it came to take-off and landing design, Yang Hui thought about the design concept of this drone. The environment is all introduced, and then we will listen to the opinions of these designers.

Listened to Yang Hui's introduction. After a while, someone finally stood up: "This aircraft is very simple in design, and it is certainly feasible in aerodynamic design, and the main aerodynamic control difficulty of this aircraft is the camber double vertical tail design." The technical support we got from Northrop was the supersonic camber twin tail, which is much simpler in some parts of the current subsonic aircraft, and we can come up with a working design in three months at most. ”

Of course, Yang Hui knows the difference between this supersonic airfoil and a subsonic airfoil, the supersonic airfoil uses a swept wing, which is not only reflected in the main wing, but also in the vertical tail.

There is a big difference between a supersonic camber twin vertical tail and a subsonic camber twin vertical tail. Without supersonic requirements, does the airfoil still need to be designed with a large sweep angle?

Of course, there is no need, subsonic aircraft do not use a large swept vertical tail airfoil, so the new UAV is naturally much simpler in the design, which is also the confidence of aerodynamic designers to dare to come up with a qualified preliminary design in three months.

The airfoil is designed according to the subsonic flight environment, and there is no need to do supersonic wind tunnel testing at all, which saves time, money, and reduces technical problems, which are the reasons for the shortening of the design time.

Speaking of which, again, a digression, in the design of the supersonic swept wing. Not only is the aerodynamic design much more troublesome, but there are also great changes in the force, and the structural design is very different from the subsonic aircraft design.

For example, the airfoil of supersonic aircraft has a certain swept angle, and the 'swept effect' brought by the swept wing airfoil is a rather disgusting problem in wing design.

To put it simply: the root of the swept wing varies due to the length of the force transmission element. The stiffness is different, and the force is always transmitted along the shortest road force, and the force transmission element at the leading edge is longer. Of course, the force is less; The force transmission element at the trailing edge is shorter, resulting in an increase in the force. This requires a lot of additional compensation for the trailing edge of the wing root in the airfoil design.

If you want to talk about such a question carefully, it is definitely a lot to say. Saying so much is to make it clear: the design of supersonic flight aircraft is much more difficult than subsonic design, and with the camber twin vertical tail technical data designed for supersonic flight, it is really not a big problem to extend the design of camber double vertical tail for subsonic flight, it is completely simple and pleasant.

"Okay, that's what you said, three months to come up with the airfoil design, as long as you come up with the design according to the plan, I will be in charge and give you some material rewards."

Material rewards, which have really not appeared a few times in Southwest Science and Industry, the most important thing is that I heard Secretary Yang mean to reward more than ten people to myself alone?

The work of the Southwest Section is a military industrial unit, and it is a proper state-run unit, and there have been many material rewards over the years, but those are everyone's share, and it is a big pot of rice, which is more appropriate to say that it is welfare.

Now for the first time, it is said that it is necessary to open a small stove and issue rewards alone, which is really eye-catching, and the rewards alone are different from others, and the incentive effect brought by this is definitely quite promising.

This is Yang Hui in the upcoming to accept the southwest science and industry management of the test of the waters, southwest science and industry compared with other old state-owned enterprises problems are much less, but some of the inherent big pot rice ideas have long appeared, to motivate workers, technical personnel to work hard, the continuous promotion of the reward system is absolutely indispensable, now is just a test of the waters.

Seeing the excited facial expressions of these designers, Yang Hui smiled with satisfaction, and now he is ready to wait for the technical achievements to come out, and an important problem in the design of the UAV body will be solved, as for the solution of the rotary engine

It has not yet been decided whether to use piston engines or rotary engines, and it is necessary to consult whether the military is willing to accept such a completely new engine.

"Okay, let's end this meeting, you can start researching, time waits for no one."

Turning off the projector, Yang Hui did not take away these pneumatic materials, and left them directly to these technicians, thinking that there would still be help for them.

Walking out of the room, I found that it was already dark, but the bright lights in the office leaked out, and the corridor was not dark at all, and I could hear intermittent discussions from time to time.

On the empty outdoor road, the whistling sound of fighter planes suddenly came from a distance, and it seemed that there were fighter planes flying at night? This is relatively rare, the J-7 aircraft does not have the ability to fly at night, and it is only when it arrives at the J-7A that it can initially fly at night, so now it is doing the night flight test flight of the J-7A?

It doesn't seem right, it's all late, and the new plane's factory night flight test flight should have passed, looking at the plane that landed on the runway, I feel that this plane will bring some new news.

Anyway, he didn't feel sleepy, Yang Hui turned around and walked towards the airport from the fork in the road, it would take more than ten minutes to go and see it, so as to satisfy his curiosity

"Coming back so soon? What is the test flight situation over there, I only saw you docking in the air once when I left last time, and now that such a long time has passed, you must have some new progress. ”

That's right, the one who returned from this night flight was the only Jianjiao-7A air refueling model that deliberately went to the west to test air refueling.

Looking at this, I feel that it should be the first situation, which also shows from the side that the intensity of the Jianjiao 7A test flight in the west flight is quite high, and the last time it flew to the west, Yang Hui knew that this aircraft was still a long time away from the large-scale C inspection. (To be continued......)