The plane began to roar. The sound of jet engines that Zhang Hao had only heard in movies in the past was finally heard in reality. The sound was light and powerful, and it was the sound of yearning for the sky.
A weak airflow spurted out from the rear of the plane. The plane slowly slid forward and arrived outside the warehouse. After aligning with the runway, the plane made an explosion-like sound, and incompletely burned red flames spurted out from the rear of the plane. But soon
, the flame turned blue, light blue, or even light purple.
The engine's tail flames erupted in the air with a sharp, tearing sound.
The plane accelerated rapidly, the roar quickly faded away, and the plane quickly became smaller in the field of vision. After about ten seconds, the plane suddenly tilted up, and then with a long roar, the plane rose from the ground and the landing gear began to retract.
It was only then that there was strong wind on the runway.
The staff in the base covered their brows with palm hoods and watched the aircraft flying across the sky like lightning. Compared with propeller aircraft, jet fighters are like real dragons. After rushing into the sky, their speed actually increases faster.
.
The plane quickly became smaller at an unimaginable speed, and soon became a black spot. After that, the black spot also disappeared, and there was only a majestic and low echo between the sky and the earth, gradually dissipating.
But the work on the ground does not end here. A new set of equipment is at work, this is...a walkie-talkie!
Of course, walkie-talkies relying on computer and chip technology have still not appeared, but researchers from Dayang Group have used the formation method and the idea of a magic weapon to temporarily design a very practical solution.
They made a magic weapon, which was a "magic weapon" level engine with a keyboard. This was a full-size keyboard, which was also one of the by-products of computer technology research.
This keyboard can use root words or pinyin to send combined codes through the telegraph machine.
The telegraph machine on the other side can receive signals according to individual keys on the keyboard, and then use a magic decoder to analyze the meaning of the other party.
Compared with the traditional telegraph, this new method is more convenient and can be completely controlled by one person. It does not even require professional knowledge and only needs to refine a brand new magic weapon, which is not difficult.
Of course, if you want the telegraph to send signals, it cannot be placed in the storage space and must be taken out. This is the only trouble.
At this time, the telegraph personnel continued to report Yun Yangfan's situation in the sky. Following Yun Yangfan, there was an engineer responsible for supervising the status of the aircraft.
In this aircraft test, the external formations were not turned on at all. In fact, there were no external formations on the prototype, except for the portholes.
On the ground, Lin Yinghao, Zhu Min, Leng Fengxue and others no longer paid attention to Zhang Hao. Everyone was already busy. According to the report on the plane, they needed to check and think about all process steps and design defects.
Zhang Hao listened quietly and did not disturb anyone. But soon Zhang Hao also discovered a small problem:
An airplane cannot exceed the speed of sound! Even if an airplane 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 1,800 kilometers per hour; aircraft cannot exceed the speed of sound.
When we reach above the aura layer and reach an altitude of 180 kilometers, the air density drops and the speed of sound drops sharply to 350 meters, which is 1260 kilometers per hour, but the aircraft still cannot exceed the speed of sound!
When on the ground, the maximum speed of the aircraft can reach 1,650 kilometers per hour, which is approximately equivalent to 92% of the speed of sound. This speed is significantly higher than the speed of sound at high altitudes.
But when it reaches high altitude, the maximum speed of the aircraft is only 1180 kilometers, which is only about 94% of the speed of sound at high altitude!
An airplane can only reach subsonic speeds at its maximum, but it cannot break the speed of sound no matter what. There seems to be a powerful law that prevents airplanes from breaking the speed of sound.
Even if it reaches the above subsonic speed, the aircraft begins to tremble violently. According to reports from Yun Yangfan and technicians, the aircraft is like a small wooden boat shuttled in strong winds and waves, and it seems that it can disintegrate at any time. In that kind of extreme flight, the entire aircraft
The center is creaking.
That is to say, the structure of the aircraft is strong, otherwise it would have disintegrated. And they did not dare to try too much at such a limit speed.
"Weird!" The scientific researchers on the ground whispered to each other.
There are many products of the Ocean Group that can break the speed of sound without resorting to magic. Whether it is sniper rifle bullets or artillery shells, they can easily break the speed of sound.
It makes no sense that a sophisticated high-tech product like an airplane, which has been precisely designed, cannot break the speed of sound!
Is the plane too big? Everyone had a heated discussion and the plane kept trying.
They even tried to make the plane dive from a high altitude, then shut down the engine, and use the force of the descent to break the speed of sound. But obviously this plan failed. The air resistance at the speed of sound was unimaginably strong. After the plane shut down the engine, its speed quickly decreased.
The discussion became more and more intense, but at this time, Zhang Hao suddenly came to his senses and said, "Let the plane come back. I have an idea that maybe needs to be verified."
Then, Zhang Hao took out his flying sword and drew on the ground. The cement floor was scratched slightly by Zhang Hao, but it was only very slight.
"As you can see, whether it is bullets, cannonballs, or ballistae, the lines are generally smooth and thick at the front and rear. But the same cannot be said for aircraft.
With the wings added to the plane, the central part is quite bloated! Like a fat man.
You guys try it and make the 'cross-sectional area' of the front and rear of the aircraft consistent. Try making the wing part of the fuselage a little thinner."
At this time, Zhang Hao almost didn't point out the "equal area law" directly. When the sound barrier is broken, there will be a powerful shock wave, which will form a complex fluid environment. But it can change the "overall structure" of the "aircraft's appearance"
Make it simple to eliminate this effect.
The law of equal areas is this principle.
The so-called equal area means that the sum of the cross-sections of the aircraft from front to back is the same. So you see, all fighter jets are "small waisted".
The 'Equal Area Rule' took five years of hard work by a large number of outstanding scientists on 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 doesn't want Dayang Group to waste time on this.
Lin Yinghao and others were hesitant, but they still sent the plane back and started research.
They first used the model to simulate 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.
Fight with the Qinglong family!
After Zhou Xueyao's reminder, Zhang Hao also felt that the Twelve Families should not be allowed to be too leisurely and allow them to have free time to arrange things in the back. What's more, they should show the muscles of Dayang Group to the world.
The vehicle was driving smoothly, but Zhang Hao already had a plan in mind.