Chapter 715

Zhang Hao stood by and watched quietly.

The plane began to roar, and the sound of jet engines that Zhang Hao had only heard in movies in the past was finally heard in reality. That voice is light and surging, it is the voice of yearning for the sky.

A weak airflow jetted out from the rear of the plane, and the plane slid forward slowly, came outside the warehouse, and after aiming at the runway, the plane burst out with a bursting sound, and incompletely burned, red flames spewed out from the rear of the plane. But soon, the flames turned blue, light blue, and even light purple.

The engine's exhaust flame burst into the air with a sharp tearing sound.

The plane accelerated rapidly, the roar quickly disappeared, and the plane quickly became smaller in the field of vision. For about ten seconds, the plane tilted up suddenly, and then accompanied by a long roar, the plane rose from the ground, and the landing gear began to retract.

Until then, there was a strong wind on the runway.

The staff in the base covered their brows with palm masks, watching the plane fly into the sky like lightning. Compared with propeller planes, jet fighters are like real dragons. After rushing into the sky, their speed increases even faster.

The aircraft rapidly became smaller at an unimaginable speed, and soon became a black spot. After that, the black spots also disappeared, and there was only a grand and deep echo between the heavens and the earth, which gradually dissipated.

But the work on the ground did not end there. A new set of equipment is in the works, it's... a walkie-talkie!

Of course, walkie-talkies relying on computer and chip technology have not yet appeared, but the researchers of Dayang Group have temporarily designed a very practical solution with the idea of ​​formation and magic weapon.

They made a magic weapon, which was a 'magic' level engine with a keypad. It's a full-size keyboard, one of the byproducts of research in computer technology.

This keyboard can use radicals or pinyin to send combined codes through the telegraph.

The telegraph machine on the other side can receive signals according to the individual keys of the keyboard, and then analyze the meaning of the other party through a magic weapon decoder.

Compared with the traditional telegraph, this brand new method is more convenient, and can be completely manipulated by one person, even without professional knowledge - just refine a brand new magic weapon, and this is not difficult.

Of course, if you want the telegraph to send a signal, you can't put it in the storage space, you have to take it out. This is the only trouble.

At this time, the telegraph staff kept reporting the situation of the clouds and sails in the sky. Following Yun Yangfan, there is also an engineer who is responsible for supervising the status of the aircraft.

In this aircraft test, the external formations were not activated at all—in fact, there were no external formations on the prototype. Except the portholes.

On the ground, Lin Yinghao, Zhu Min, Leng Fengxue and others couldn't care about Zhang Hao anymore, and everyone was already busy. According to the report on the plane, they need to check and think about all process steps and design defects.

Zhang Hao listened quietly without disturbing everyone. But soon Zhang Hao also found a little problem:

Airplanes cannot exceed the speed of sound! Even if the plane can fly to a terrifying altitude of 180 kilometers.

When it is relatively close to the ground, the air density is high, and the speed of sound can reach 500 meters, which is 1800 kilometers per hour; the plane cannot exceed the speed of sound.

After reaching an altitude of 180 kilometers above the aura layer, the air density drops, and the speed of sound drops to 350 meters, which is 1260 kilometers per hour, but the plane still cannot exceed the speed of sound!

When on the ground, the maximum speed of the aircraft can reach 1650 kilometers per hour, which is equivalent to about 92% of the speed of sound-this speed obviously exceeds the speed of sound at high altitudes.

But at high altitude, the maximum speed of the plane is only 1180 kilometers, which is only about 94% of the speed of sound at high altitude!

The plane can only reach subsonic speed at most, but it can't break through the speed of sound anyway. There seems to be a strong law preventing planes from breaking the speed of sound.

And even if it reached the subsonic speed above, the plane began to tremble violently. According to the reports from Yun Yangfan and the technicians, the plane seemed to disintegrate at any time like a small wooden boat shuttling through the strong wind and waves. In that extreme flight, the whole plane creaked.

That is to say, the structure of the aircraft is solid, otherwise it would have disintegrated. And with such a limit speed, they didn't dare to try too much.

"Strange!" The scientific researchers on the ground whispered to each other.

There are also many products of Dayang Group that can break through the speed of sound without resorting to magic. Whether it is a sniper rifle bullet or a shell, it can easily break through the speed of sound.

It doesn't make sense that a sophisticated high-tech product like an airplane, which has been precisely designed, can't break through the speed of sound!

Could it be that the plane is too big? Everyone's heated discussion also made the plane keep trying.

He even tried to let the plane dive from a high altitude, then turn off the engine, and use the force of the fall to break through the speed of sound. But obviously this plan failed. The air resistance at the speed of sound is so strong that it is beyond imagination. After the engine is turned off, the speed of the aircraft decreases quickly.

The discussion among the people became more intense, but at this moment, Zhang Hao suddenly came to his senses, "Let the plane come back. I have an idea, maybe I need to verify it."

Then, Zhang Hao took out the flying sword and drew on the ground. The concrete floor was scratched by Zhang Hao, but it was very slight.

"Everyone can see that whether it is a bullet, a shell, or a ballista, the overall lines are very smooth, and the front and rear are generally thick. But the aircraft is not.

With the wings added to the plane, the central part is quite bloated! Like a fat man.

You guys try to make the 'cross-sectional area' of the front and back of the plane the same. Try to make the wing part of the fuselage thinner. "

At this time, Zhang Hao almost didn't point out the "law of equal area" directly. When breaking through the sound barrier, there will be powerful shock waves, which will form a complex fluid environment. However, the "overall structure" of the "appearance of the aircraft" can be made simpler to eliminate this effect.

And the law of equal area is this principle.

The so-called equal area is the sum of the cross-sections of the aircraft from front to back, which are the same. So you see, all fighters have "small waists".

The "law of equal area" took five years of hard work by a large number of outstanding scientists on the earth to figure it out, and some pilots died because of it. As for the national wealth consumed by this process, it is even more difficult to estimate.

But Zhang Hao didn't want Dayang Group to waste time on this.

Lin Yinghao and the others were skeptical, but let the plane return and began to study it.

They first simulated with a model in the wind tunnel, but it would take a month or two to complete the simulation and improvement. Zhang Hao encouraged everyone and left. Next, there are more important things to do - to fight with the Qinglong family!

After Zhou Xueyao's awakening, Zhang Hao also felt that the Twelve Families should not be too leisurely, and let them spend their time laying out the layout. What's more, it is necessary to show the muscles of Dayang Group to the world.

The vehicle was running smoothly, but Zhang Hao already had a plan in mind.