Chapter 1345 Don’t Really Come up with the Nan Tian Men Plan, Right?

After hearing Chang Haonan's answer, Xing Muchun bowed his head for a while, and then sighed:

"Okay ... Today's era is really different from us."

The former will not completely deny the value of the other party's work:

"In the future report, you can indeed continue to join this part ... Compared to the simple funding use of the financial side of the finance, it is more interesting, and it is much more comprehensive."

This sentence is not exactly to provide emotional value.

As the person in charge of the project, Chang Haonan could no longer pay attention to the technical level as in the early years.

Organization, personnel, administration, funding ...

Although these parts are responsible for each other, he cannot really be a shopkeeper.

Although it is also a chart plus numbers, for Chang Haonan, the wind tunnel testing data and flow field computing equations are simple and easy to understand than financial accounting.

Of course, the statistical data provided by Xing Muchun cannot replace the conclusions of any professional field, but at least one can increase the perspective of looking at the problem.

"..."

The two started a period of discussion around the current R & D progress.

After that, Chang Haonan put the report aside, and took out a few pages from the drawer and was written full of A4 paper.

"There is another thing."

He turned the paper page in front of the punishment in front of the punishment:

"According to this month's research on the combination of wave body, I have some new ideas at the theoretical level."

It was almost a normal reflex, and Xing Muchun left the back of the seat.

However, I did not immediately see the content of Chang Haonan's writing on the paper.

He is very clear that even if he can understand, it is impossible to work in just a few minutes or a few hours.

Therefore, the key is to listen to what the other party says.

Sure enough, Chang Haonan explained:

"The proof part may be a bit complicated, but in summary, the three -dimensional supersonic flow equation can approach the axis symmetrical flow equation within the second -order accuracy range. You can describe the local three -dimensional flow with local two -dimensional axis. "

Even after a round of explanation, this part of the content still seems a bit abstract.

Fortunately, in recent years, Xing Muchun has also strengthened his theoretical level, at least captured the keywords.

"It means that the benchmark flow field on the cut surface can no longer be limited to the axis symmetrical flow field of the same type, but can customize some details characteristics according to the specific requirements ... such as the front edge line plunder corner, or the lower surface on the surface "

If this is the case, it will greatly liberate the design freedom of design, and no longer can only be cut into a type of surface from different rotating bodies like the past.

The significance of the design of the hypersonic aircraft is no less than that from the Pilot No. 1 to the era of fusion of the wing.

Chang Haonan nodded:

"In fact, it can be more specific and even determine a part of the design process."

He organized the language a little, and then continued to add:

"Three -dimensional streaming fields are divided into several cut planes through a given wave curve. The flow in each cut surface is determined by the specific cutted cone in the plane. The wave horns are equal to ensure that the intensity of the switch is the same as the exhibition of the flow field ... "

"The bottom radius of each tangent cone can be different, and the curvature radius and flow parameters of the swarm curve are determined: If the curvature radius is limited, it is a three -dimensional cone -shaped flow, otherwise it is a two -dimensional wedge flow. Methods can design the reference flow field and the shape of the wave body according to the customized swarm shape ... "

"..."

Compared with the pure number science parts on the paper just now, the content closer to the field of engineering is obviously more torture.

Although the two people holding paper and pen and pen and pen cannot really replace the supercomputing, it is fine to give some qualitative analysis conclusions through experience.

After hearing Chang Haonan's explanation, he quickly reacted:

"Specifically in our design, through the curvature of the lip -mouth cross -section, the curvature of the linear lines changes along the exhibition, it can realize the cutting plane benchmark flow field along the exhibition. The continuous transition of the waveli -standard flow field ... Ideally, it can even make the outer side of the forest compress the outer compressing wave surface and the inner contraction of the wave surface ... "

However, half of the analysis, his voice became smaller and smaller, and finally stopped.

Xing Muchun stretched out his hand for a while on the table, and then raised his head again, using some uncertain tone:

"But the combination of the combined wave body designed like this seems to be closer to one ... parallel structure?"

"It can only be said that the form is closer to the two waves to connect."

Chang Haonan briefly draws the schematic diagram:

"But if you really have to classify it, can this solution be regarded as a combination of wave body or another saying."

Xing Muchun stared at the content on the paper for a while:

"Indeed, after all, it is designed as a whole, and it looks more like this solution now ..."

He considers for a long time, and he still didn't find a proper adjective.

However, Chang Haonan did not have these concerns, and directly filled the blanks:

"More coordinated."

There is really nothing to say.

Compared to the current solution that connects the high -speed multiplier and low -speed multiplier through a transition section, the concept map on the paper is obviously more in line with the concept of the "aircraft" in normal people's understanding.

There is no mistake, one, one, one, one, one, one, one, one 619, one book, one, one, one, one, one, one, a book!

"really."

Xing Muchun also expressed his approval.

But then it seemed to have thought of something:

"Could it be ... do you want to change our design plan?"

There is full of thriller in the tone.

This is just a matter of time. If you have to change it again, it is a bit unbearable.

"don’t worry."

Chang Haonan quickly waved his hand and comforted it:

"One is that we cannot change anymore at this stage. Secondly, the biggest difficulty of the hypersonic flight control is the longitudinal stability control. The current series of combination schemes are the best stability among all design. The follow -up Other concepts have to wait until this test is over, and then re -demonstrate the feasibility to be officially included. "

When Xing Muchun heard his words, he finally relieved:

"Huh ... that's fine."

In fact, the former has another reason not to say it directly.

This is the biggest significance of this cut flow design is not in the upper surface and the outer contour, but it can flexibly customize the surface, that is, the compressed surface.

In other words, the ability to uniformly compress the airflow will probably no longer be exclusive to the kiss and cutter.

If the tangent -cuttering wave body and the contraction of the intake airway on both sides are integrated through the geometric fusion, it can achieve almost consistent flow compression effects, providing sufficient intake conditions for ultra -combustion stamping engines.

And there is a higher cruise lift ratio, which fully meets most of the needs of an aircraft.

The only defect is probably that the internal volume of the wealthy is not further compressed. After the layout of the customer/cargo cabin and various control systems, the part of the fuel can be left to the fuel.

Fortunately, the near -space aircraft itself also uses jump -type orbit on the edge of the atmosphere. The engine only needs to work in the appropriate interval. Therefore, it can achieve long -term high -speed flight without carrying a large amount of fuel.

Actually, the definition of the final product is very close to the "White Emperor" empty fighter in the previous world science fiction universe —

Although you ca n’t really enter space, you can act in the sub -orbit for a long time and achieve independent take -off and landing.

Of course, Chang Haonan knew that at least before his rebirth, there was no such project that really existed.

But because of this, it is inevitable to make some associations:

"This Nan Tianmen plan will not really let me give it out ..."