Yang Xiaotao knew that his performance had attracted everyone's attention, but the harvest last night was too great.

After working hard all night, both myself and my wife are satisfied.

Then the time you've been waiting for arrives.

As soon as midnight passes, the system exchange column will be updated on time.

This week, month, and year come together to create a blind box that has never been seen before.

A blind box that emits golden light.

And there is a one-minute countdown on the side.

Seeing this, Yang Xiaotao was glad that his final sprint was strong enough and he did not miss it.

Otherwise, even a yawn may miss this opportunity.

Then, I bought the blind box.

The price is that the original 26,000 credits are now only 6,000!

Of course Yang Xiaotao had to take a good look at such expensive credits, otherwise how could he sleep?

But Yang Xiaotao still thought wrong.

I couldn’t sleep after reading it after opening it.

I saw a golden light burst out of the blind box, and then the sound of the system came out, and then, the newly expanded system space was suddenly half filled.

So much so that everything in the original system was automatically moved aside, and it became a mess.

But Yang Xiaotao didn't care about this. After hearing the system prompt, he sat up from the bed with a smile on his face.

Just when Yang Xiaotao was lost in memories, he suddenly felt a pain in the instep of his foot, and then heard Ran Qiuye whisper, "Still smiling!"

Yang Xiaotao reacted and saw his grandparents glanced at him and smiled awkwardly, "These eggs are very fragrant!"

Ms. Cui suddenly laughed after hearing this, and Ran Qiuye's face turned redder.

After breakfast, Yang Xiaotao went out carrying the gifts he had prepared.

Today is New Year's Day, Yang Xiaotao is going to visit his uncle, and he also wants to hear his opinion!

He said goodbye to Ran Qiuye, said he might not come back for lunch, and drove away.

On both sides of the road, red is still the main color.

The red color in the sky still appeared from time to time. Yang Xiaotao listened and sang along softly, but in his mind, the things taken out of the blind box appeared!

F15 fighter jet design drawing!

That's right, it's the United States' F15 fighter jet, codenamed Eagle.

Although the design drawings provided by the system are only initial optimized models, they have great research value.

As for the later improved version, I don’t think about it for the time being.

As far as domestic supporting facilities are concerned, it would be good if they can meet the needs of entry-level models.

A series of data about F15 fighter jets appeared in his mind, and the smile on Yang Xiaotao's face became even brighter.

Although compared to Bai Ju, this one is a bit smaller, but overall there are still many similarities.

For example, they all have two seats and two engines, and they all have swept wings and double hammer wings.

Taking it out later can also be said to be a reference to Baiju's layout to provide good reasons for its appearance.

And, most importantly, this system provides a complete set of aircraft design drawings!

In particular, this also includes the aircraft's engine, seat design, pod, fuel tank design, fuselage and wing requirements, and other requirements such as supporting radar, etc.

Not to mention anything else, the aircraft engine is worth 10,000 credits in Yang Xiaotao's opinion.

Because the F15 does not use a turbojet engine, but a turbofan engine with a fan installed on it.

The advantage of this kind of engine is that it increases the windward area, thereby increasing the air flow, thereby increasing thrust and reducing fuel consumption.

It can be said that turbofan engines are the mainstream of future aviation development.

Similarly, after thoroughly understanding this technology, there will be specific improvements in the development of missiles.

The F15 engine given by the system is an F100 turbofan engine. Yang Xiaotao took a look and found that there are many technical requirements, including many special alloys for materials, and corresponding machine tools for processing high-temperature materials.

There are ceramic blades that Yang Xiaotao is very interested in.

The intermediate thrust that the entire engine can achieve is 6,600 kg, and the maximum thrust after pressurization is 10,600 kg.

This is similar to the HXJ-1 engine, but the turbofan engine is only 1.3 tons. Compared with the two-ton HXJ-1 engine, it is obviously lighter.

This can reduce the weight of the aircraft and increase the thrust-to-weight ratio.

In addition, Yang Xiaotao feels that there are still many places worth learning, and it may even take time to study and overcome.

Otherwise, even if you have the design drawing of the engine, you will not be able to make it.

It can be said that if this engine can be produced, the overall domestic production and processing capabilities will be improved to a higher level.

Thinking of this, Yang Xiaotao became complacent.

Previously, the system gave engines to the Alliance, and now it gives aircraft to the United States. This shows no preference.

However, Yang Xiaotao didn't feel any psychological burden about intercepting Hu's opponent.

What's more, the United States is probably still researching Tomcats.

Although Yang Xiaotao also likes Tomcat very much and likes the deformable wings. He feels that it is very cool after deformation and then swishes forward at speed, but...

But the system didn’t give him this!

You can't do your own research like Bai Ju did.

Forget it, one Baiju mobilized the entire aircraft manufacturing industry and almost broke the industrial chain.

If you have your own system, why not use it?

Let’s just follow the system!

Yang Xiaotao thought proudly, and then added another key project to the nine-part plan.

Of course, there is no rush for this project.

Anyway, it will take many years for the United States to develop it.

Moreover, Yang Xiaotao did not dare to come up with the design drawings right away.

Even if you do it for a show, it will take time!
Chapter completed!