In six days, a total of eight Peng aircraft were lost.

All sorts of dangers were encountered.

There are those who collide with birds and crash, those who crash by lightning strikes, and those who experience hail weather. There are also those who have mysteriously disappeared on the sea.

The loss of the Eight Planes made everyone heavy. This event did not seem to be as perfect as it could have been.

Aviation is still not enough. There is still a long way to go in the aerospace sector.

The world's blue sky is only explored by the planes of New Kyushu, and the life of a pilot is used to explore this mysterious blue sky. It's not enough, the world is too big. But those pilots who died made a full contribution to the aerospace industry.

They used their lives to find a safe path. For example, where there are imperfections in Pengshi, what kind of settings should be installed, and how to fly to reduce the possibility of safety accidents as little as possible.

If a plane disappears from the Pacific Ocean, then everyone will not fly in that place in the future. If a plane collides with a mountain vulture in the Himalayas, then when it breaks through the Himalayas in the future, it will need to increase the altitude.

There's not much that the Kyushu Academy of Sciences can do. They just still feel that human beings are extraordinarily small in front of nature. Even if you have the tools to dominate the blue sky, it's still not enough.

All Li Zhen could do was pray.

When I come back, I only wish you a safe journey.

And whether the reality is safe or not, this is not his final say. To put it mildly, it's all about luck.

Six days later, all the planes were in place.

All the countries that decided to participate in the Society for the Common Prosperity of Mankind waited until the plane arrived.

The pilots did not hide their secrets at all, and set up flight classes in various countries, and taught all the flight knowledge, aerospace knowledge, dynamic knowledge, and aeronautical knowledge they had learned all their lives.

All countries are also very self-motivated, cherish this hard-won learning opportunity, everyone works hard to learn flying knowledge, and everyone wants to become a pilot in their country and make outstanding contributions to their own nation.

Everything is settled, and we will meet on April 1st, and there will be some time. All countries have calmed down and learned. However, the Kyushu Academy of Sciences was given a death order by Li Zhen and did its best to develop radar.

The task of researching radar was mainly assigned to the Institute of Electromagnetism.

And the people of the School of Electromagnetism also did their best, led by Fang Hanxian, to form a research team. Received a research grant of 10 million gold coupons to research this thing.

Of the 10 million in funding, 8 million were given by the state, and then 2 million were given by the Kyushu Academy of Sciences.

The new Kyushu government attaches more importance to the research of radar than the Kyushu Academy of Sciences. Because the probability of an accident on the plane is a bit too great now, which makes people worry. The battlefield of the future will definitely decide the winner in the air, so the importance of radar can be imagined.

Institute of Electromagnetism, full of bats.

A lot of people are observing the activities and behavior of bats.

Fang Hanxian lay in that place all day, looking at a bat in a cage, and of course, the bat couldn't see him.

"It's such a magical creature, it's a blind man. But he can rely on a pair of ears to see farther and see more than those with eyes, and he can see really. ”

Fang Hanxian muttered, and secretly opened a gap in the cage.

'Tsk' heard a shrill cry, and then the bat jerked out of its cage and flew out. It was a closed house with only a small hole in the window.

After fluttering around the house for a while, the bat suddenly rushed towards the small hole, and immediately spread its wings and flew away after drilling through the small hole.

Similarly, there was a sparrow in the other cage, after Fang Hanxian let go of the sparrow. The sparrows screamed and scurried around the house, fluttering everywhere, but could not fly out anyway. It couldn't even notice the existence of the little hole.

Fang Hanxian suddenly realized something, and hurriedly wrote down his notes:

"If I'm not mistaken, after the bat makes that high-pitched call. The whole space is filled with this sound, and when it hits an obstacle, it bounces back and its ears pick it up again. It doesn't need eyes at all, and a three-dimensional picture will appear in your mind, showing all the furnishings in the whole room. Even though the hole was small, it was able to find it and fly out."

"And the sparrows, they can't find it. Even if I opened the door, it just kept flying in the corner, but it couldn't fly out. Because it can't see the door. It can't see the hole. ”

Fang Hanxian gasped: "It's amazing." These animals, which have no civilization at all, have such advanced science and technology. This is too powerful, if it weren't for Master Li saying that the principle of radar is the same as that of bats, in the 10,000-year history of the new calendar, I'm afraid no one would have found such a magical creature. ”

Then the principle is the same. The bat is emitting a sound that bounces back to form a stereogram. And the technology that we in New Kyushu currently have is radio signal waves. If you think of a radio signal wave as the sound of a bat, set up a receiver that receives the radio signal. After the radio is transmitted over a wide area, the feedback is accepted. Wouldn't that be able to calculate the space? ”

Fang Hanxian stood up excitedly, lit his pipe and took two puffs hard, and fell into deep thought again.

"It's not difficult to get a radio transceiver, but it's the bat's brain system that's difficult. The sounds made by bats are like radio waves, and the ears are like receivers, but the most important thing is the brain that can process this information. ”

"I know this principle, but I can't solve the instrument that analyzes the signal band, which is just a useless signal wave. How can this be solved? ”

Fang Hanxian fell into a bottleneck, constantly sighing and sighing, with a sad face.

Today's scientific development is not the same as in previous years, in the past few years there was nothing, everything has a physical principle, that is a physical principle that can be seen.

But at present, physics has entered a bottleneck, and it seems that it is difficult to break through. Because of the current physical principles, most of them have become things that cannot be seen by the naked eye.

Before the steam engine, the engine. That's at least something you can try, imagine, and see.

But now things like signal waves are completely invisible. How can the naked eye see the radio? I can't hear with my ears. It has to be solved by the instrument, but the problem is stuck on the instrument, and there are no corresponding conditions......