Chapter 1082 Linear Antenna

In fact, in Chang Haonan's original idea, the platform and the equipment were originally matched.

But he didn't expect that the French just got stuck at the time when he was so busy that his feet hit his head, so he didn't have time to organize the three companies personally.

Liu Yongquan could only connect with Liang Shaoxiu alone.

So the situation became that the former was surprised that "how could there be a ready-made adaptation plan suddenly?"

And the latter was shocked that "how could the early warning aircraft plan be sold quietly?"

As for the Electronic Technology Group...

Guo Lin was conducting basic tests in Jinling, so he didn't have time to arrive.

But it's not a big problem.

The two parties haven't even signed an agreement yet.

The so-called "overall design plan" is impossible to give out detailed technical details directly.

The early warning command system is originally a highly customized product. Even if the platform is similar or even the same, the specific design may vary greatly.

The focus of this stage is still the aircraft structure layout and the basic performance of the core subsystem.

The main thing is to give a feedback that Dassault can accept in terms of performance and schedule.

As for the specific research and development work, we have to wait until Dassault shares the complete design data of Falcon 8Z.

Therefore, after a brief review of the known situation, Liang Shaoxiu assigned several people from the project team to assist Liu Yongquan in sorting out the relevant documents...

This period of time was certainly fulfilling for them.

But it was different for Edsteiner, who had been waiting for news in France.

Considering that the Falcon 8Z itself has not yet been commercially operated, he is not in a hurry to see the plan.

But the inquiry letter has been sent, so there must be a feedback email indicating whether it can or cannot, right?

In the past, China's response speed on business issues was generally within a week.

Some important things can even be calculated by hours.

But this time, there was no news for nearly a month -

The exchanges between the two sides in the Falcon 8Z test flight work continued as usual, but as long as he mentioned the content related to the early warning aircraft in the meeting or email, China would deal with it with the words "actively discussing and studying".

He also tried to contact Liu Yongquan directly to inquire about the situation, but the answer he got was that Mr. Liu was on a business trip and could not get through...

In Edsteiner's opinion, it was obvious that the other party was deliberately avoiding him.

But things had come to this point, and he had no other choice but to wait patiently.

Until one day in early July...

The assistant pushed the door open in a hurry.

He still had a few pages of official documents in his hand.

It looked like they had just been printed out, and they had not even had time to put them into the folder.

"Doctor, the reply from China has arrived!"

He strode forward and put the documents on the desk.

Although the other party did not directly explain what the reply was, looking at this anxious look, it was not difficult for Edsteiner to judge that it was what he was most concerned about.

He sat up almost instantly, and the movement was so fierce that the chair under his butt made a sharp sound.

But the next second, perhaps considering his image as a leader, Edsteiner took a deep breath to calm himself down and forced himself to slow down his movements.

"Got it."

He nodded casually:

"You go back first, I'll find you later."

Then he took out the pen from the pen holder and calmly cast his eyes to the first page of the document on the table.

However...

After subconsciously skipping the first few lines of routine courtesy, the first sentence he saw was-

In response to your request, we have completed the overall structural design of the early warning aircraft antenna...

"???"

Edsteiner's right hand holding the pen shook violently, and almost threw the pen cap behind it out.

He closed his eyes and gently pinched his temples on both sides.

Then he opened his eyes again.

Only then did he make sure that he was not wrong.

The other party did not just reply with an intention of "cooperation".

But in this month, the overall plan was worked out...

Edsteiner raised his hand to wipe the sweat from his forehead, and for a moment he was even a little at a loss.

But then he thought about it, the plan of cooperating in the development of early warning aircraft was originally proposed by the Chinese.

The other party had been prepared, which seemed reasonable...

Although he found a seemingly reasonable explanation, he had forced himself to calm down at first, and after such an incident, he could not pretend anymore, so he quickly read on.

The meaning of the Chinese side was very clear, that is, the basic plan had been prepared, but because the formal cooperative research and development agreement had not been signed, it could not be sent out directly according to the regulations, and you needed to send a delegation.

And the current design was only a rough idea. If you want to go deeper into the details, you need to obtain the detailed design data of the Falcon 8Z platform.

At the end of the reply, a paragraph was specially added, saying that the next two to three years may be a critical period for the explosion of the light early warning aircraft market. There are not many competitors at present, and it is hoped that both sides can unite and not cause a lose-lose situation because of some minor differences.

It is not difficult to see that the other party has something to say.

At least we already know that Edsteiner wanted to find a third party to cooperate with some time ago, but he had no choice but to go back to his old friend.

It's just that everyone is a decent person, so some things can't be said too clearly.

Of course, it is also urging Dassault to make a decision as soon as possible.

There is even a suspicion of PUA.

However, it can be seen.

But this sentence really caught Edsteiner's mind.

So, the assistant who just returned to his office and didn't even have time to drink saliva was called back by a phone call...

...

Just one week later, a delegation led by Didier Casore set off from France to China.

Although Casore had not had much contact with the Aviation Power Group before, and it was the first time he met Liu Yongquan, he originally supported cooperation with China on the early warning aircraft project, which was completely in the same direction.

Therefore, the talks between the two sides went very smoothly, and the virtual phase soon ended and began to confirm the preliminary design plan.

In fact, in theory, there are only four or five layouts of early warning aircraft antennas.

In Casore's opinion, since the Chinese have already equipped a medium-sized early warning aircraft with a T-shaped cross-section antenna, the plan they brought out this time is likely to be a scaled-down plan.

The key is how to integrate a fully functional system into a small platform like the Falcon 8Z without having a fatal impact on the flight quality and fuselage structure.

However, when Liu Yongquan turned on the projector and presented the plan on the screen, he suddenly realized that he might still be too young.

What appeared in front of the Dassault delegation was a straight-line antenna.

In theory, this should be considered a classic design of a balance beam structure.

But it is not like Ericsson's plan, which is installed on the back of the aircraft with several thick support frames.

Instead, it is fixed by a slender structure similar to a pylon.

However, this "pylon" is upside down.

It is equivalent to having an extra ventral fin on the back of the aircraft...

Thanks to this design, the distance between the antenna and the fuselage is very close, which greatly reduces the impact of the entire structure on the efficiency of the vertical tail.

And since the horizontal tail is completely above the array, there is no problem at all.

And because there are no pylons that disturb the airflow, there is no need to worry about stability during high-speed flight...

In short, it seems that all hidden dangers are completely avoided in terms of aerodynamics.

The only problem is.

In order to ensure the number of T/R components, the size of this straight-line antenna...

is too long.

It occupies almost 60% of the back of the aircraft.

In addition, the weight of the entire antenna is concentrated on that narrow line.

A civilian aircraft will not leave particularly exaggerated margins in its structure.

This installation method has no effect on the lift surface and control surface.

But Casore is almost certain that the fuselage itself cannot withstand such a high-intensity load...