Chapter 1249 Test Flight
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The engine of the flying saucer car is under the flying saucer. When the flying saucer just takes off, it rises vertically. Under the flying saucer car, there is a powerful nuclear fusion engine. Although the engine uses nuclear fusion technology, its shape is similar to that of a jet fighter engine, and it still uses a vortex jet engine. Because only an engine with such a shape can provide powerful power to the aircraft.
There are two vortex nozzles installed on the two sides of the engine below the flying saucer. These two spouts are the devices that provide power to the flying saucer car. Of course, these two nozzles can also change the flying direction of the flying saucer car.
As if the flying saucer car will rise vertically now, these two nozzles that can rotate up, down, left, and right can change the flying direction of the flying saucer car. Let the flying saucer car can directly rise vertically.
The reason why the flying saucer car designed by Zhao Zhongyao also uses this kind of jet engine is because in the development of high-power aircraft engines, once the speed of sound is to be broken, only jet engines can be used. The traditional piston engine cannot make the speed of the aircraft exceed the speed of sound at all.
However, ordinary fuel-type turbojet engines can only make the speed of the aircraft reach 2-3 times the speed of sound. This can be said to be a limit. To further increase the speed of the aircraft, only a more powerful nuclear engine can be used.
Although nuclear fission engines can also generate a lot of power, Zhao Zhongyao knows that only nuclear fusion engines can generate more powerful thrust. It can make the speed of the aircraft reach ten times or even dozens of times the speed of sound.
In fact, the power of this flying saucer car developed by Zhao Zhongyao is not particularly large. After all, this can only be regarded as an experimental flying saucer. In the future, some more advanced flying saucers will be developed. This flying saucer can only be regarded as an experimental product.
For such a new thing, everyone is very curious, but also a little worried. After all, as a test pilot of an aircraft, of course one has to take great risks. Just like Zhao Zhongyao is now, if he wants to fly his own flying saucer car, it must be dangerous.
But Zhao Zhongyao is also very optimistic about the flying saucer car he developed. He knew that this flying saucer car would be able to fly at high altitude smoothly without any problems.
Now the flying saucer car has been slowly lifted into the air. At the beginning, the flying saucer just flew directly to the sky. At this time, it is impossible to use too fast speed. After all, the flying saucer is a straw hat. If it takes off directly and vertically, the resistance will be great.
If at this time, you increase the speed very quickly, you will be in trouble. Because everyone knows that when the aircraft is flying in the air, when the speed is about to approach the speed of sound, it will encounter a sound barrier problem.
The so-called sound barrier is also called the sound barrier. It is because a straight-wing aircraft with a large aspect ratio, when the flying speed is close to the speed of sound, there will be a sharp increase in resistance, deterioration of handling performance and spontaneous head-turning, and the flight speed cannot be increased any more. It is an insurmountable obstacle of speed, hence the name.
Before humans developed supersonic aircraft, they felt that the sound barrier was impossible to overcome. It feels impossible for human aircraft to exceed the speed of sound.
But later, people found in practice that when the flight speed reaches nine-tenths of the speed of sound, that is, when the Mach number m0. The resistance increased sharply. To further increase the speed, the engine needs more thrust.
What's more serious is that the shock wave can make the airflow flowing through the surface of the wing and the fuselage very turbulent, so that the aircraft shakes violently and the control is very difficult. At the same time, the wings will sink and the nose will drop; if the plane is climbing at this time, the fuselage will suddenly automatically pitch up.
These nasty symptoms can lead to a plane crash. This is the so-called "sound barrier" problem. Since the transmission speed of sound waves is limited, a moving sound source can catch up with its own sound waves.
When the object's speed increases to match the speed of sound, sound waves begin to build up in front of the object. If the object has enough acceleration, it can break through this unstable sound wave barrier and rush to the front of the sound, that is, break through the sound barrier.
An object traveling at supersonic speeds will continue to generate a steady pressure wave in front of it. When the object is moving toward the observer, the observer does not hear the sound; after the object passes, the waves generated are transmitted towards the ground, and the pressure difference between the waves creates an audible effect, which is a sonic boom. When the flight speed of the aircraft is lower than the speed of sound, the air in contact with the aircraft acts like a "communicator", and "informs" the air that is about to encounter the aircraft ahead at the speed of sound transmission, so that they "give way".
But when the speed of the plane exceeds the speed of sound, the air in front of the plane is compressed tightly because there is no time to avoid it, and piles up into a thin layer of wave front—shock wave. Behind the shock wave, the air is compressed, causing the pressure to rise suddenly. High, preventing further acceleration of the aircraft, and may cause the wings and tail to vibrate violently and explode.
The sound barrier not only has sound waves, but also the resistance from the air. When the flying object is about to fly close to Mach 1 (the unit of sound speed), the air rushing in front cannot diffuse through the fuselage as usual, so the gas accumulates When it reaches the surroundings of the flying object, great pressure will be generated, which will also trigger an invisible air vortex, commonly known as the "death vortex", which is also called the sound barrier. If the fuselage is not specially reinforced, it will be shaken instantly. into pieces.
Therefore, after human beings understand these principles, they will know how to break through the sound barrier. The first is to develop a very strong material, used to make the wings and skin of the aircraft.
Also, the wings of the aircraft must be very thin. Because, only if the wing is thinner, when the air flows quickly over the wing, the resistance generated will be relatively reduced.
If the wings are very thick, obviously when the aircraft is flying at high speed, it will have a strong drag on the wings. Under such circumstances, if the material of the wing itself is not very strong, it is easy to fly at high speed and the speed is close to the speed of sound, and the tragedy of falling into the sand will happen.
Therefore, the materials used in the supersonic fighters developed by humans are super expensive alloy materials. It can be said that it is much better than any material used in ground vehicles. Even the materials used in some luxury cars cannot be compared with the materials used in fighter jets.
Generally speaking, new fighter jets are developed with the latest high-strength aluminum alloys, titanium alloys, magnesium alloys and other high-tech materials.
For supersonic aircraft, in terms of materials, it is necessary to have both high strength and high flexibility. It must be a material that has both, so that it can be used on a supersonic aircraft.
It can be said that flexible materials are very important on supersonic aircraft. Because when the aircraft is flying at high speed, due to the huge pressure of the air, the wings or fuselage will be deformed. Under such circumstances, if the wings of the aircraft can be automatically deformed when encountering huge resistance, it is obviously very beneficial to the safety of the aircraft itself.
This is like when practicing Taijiquan, you can use softness to overcome rigidity. In terms of aircraft development technology, this technology is now called skin technology. The understanding of the image means that the plane is covered with a layer of skin to make the shape of the plane more flexible.
Of course, to make the speed of the plane exceed the speed of sound, the shape of the plane is also very important. It must be a streamlined fuselage. And the wings must be swept back. Because only the swept wing can greatly reduce the resistance of the aircraft when flying at high speed.
In addition, the volume of an aircraft flying at supersonic speed cannot be too large. After all, the larger the volume, the greater the resistance when flying. In this way, when flying at high speed, the danger of producing a sound barrier is also greater.
Therefore, the dimensions of any fighter jet capable of high-speed flight will not be very large. Generally, the length is more than ten meters, and the wingspan generally does not exceed ten meters. Only such a small and streamlined fuselage, coupled with the shape of the swept wings, can prevent the tragedy of crashing and killing people when the aircraft is flying at high speed.
Although at the beginning, human beings paid a lot of effort and a huge price to break through the sound barrier, but after decades of development, human beings have already gained a lot of experience and lessons in breaking through the sound barrier. Human beings can now easily master this supersonic technology.
Of course, all this is not a problem at all for a genius scientist like Zhao Zhongyao.
The appearance of Zhao Zhongyao's current development of the flying saucer car is a straw hat. The thickness of the entire circular wing is only ten centimeters. The exterior glass windows of the cockpit above use the most advanced high-strength glass. When the flying saucer car flies at a very high speed, there is no need to worry about the glass windows breaking.
When developing the fuselage and wings of the flying saucer car, Zhao Zhongyao also used a large number of new materials such as bio-steel that he had developed before. This material not only has very high hardness, but also has very good toughness.
It can be said that the new bio-steel material developed by Zhao Zhongyao already has the high-tech skin technology applied on modern sixth-generation fighter jets.
With these new materials and a powerful nuclear fusion engine, Zhao Zhongyao can of course develop a very advanced flying saucer car.
Zhao Zhongyao is now flying the flying saucer car high into the sky. The main reason why he wants to try to drive this flying saucer car first is that other people don't understand the flying saucer car he developed at all.
Because this flying saucer car is not an ordinary car. It's not even an ordinary plane. Although it is called a flying saucer car, in fact, it is not a car in the eyes of ordinary people at all. This can only be regarded as a new type of human aircraft.
The reason why Zhao Zhongyao wants to drive this flying saucer car for a test flight now is because he is the only one who knows this flying saucer car best. The only way to minimize the risk is to test the flight yourself. It must be very dangerous if someone else is allowed to test the flight, because others don't know much about this flying saucer car.
Even these "Feitian Group" technicians who, together with Zhao Zhongyao, personally developed this flying saucer car. They just developed it according to the drawings designed by Zhao Zhongyao. And what they knew about this flying saucer car was not very detailed.
Not to mention ordinary technicians, even Cheng Yu, the leader of the 'Feitian Group'. It can be regarded as Zhao Zhongyao's right-hand man, and he doesn't know much about the flying saucer car in front of him.
Now if an ordinary technician is allowed to test fly this flying saucer car, it will be very dangerous. Not to mention anything else, if you don't understand the performance of this flying saucer and some aerodynamic principles just for the raising action, then once the flying saucer rises, it may encounter a sound barrier, and then it will be dangerous.
Because the shape of the flying saucer is a straw hat. When the flying saucer rises vertically, there will be a lot of resistance. At this time, if you don't control the speed and fly directly at high speed, it will of course be very dangerous.
Imagine that the flying saucer uses a super powerful nuclear fusion engine. If the speed is not controlled during the direct vertical ascent, a sound barrier will soon be generated. In this case, it is tantamount to letting the flying saucer car hit a wall directly.
Just imagine, what will be the result of this! Even if the material used to develop the flying saucer car is very strong, it will not
The flying saucer car is shattered, but it may also cause serious deformation of the flying saucer car. The original straw hat may become twisted!
Therefore, Zhao Zhongyao must come to test fly this flying saucer car himself to be at ease. Of course, he would be worried if someone else was allowed to test the flight.
Although Zhao Zhongyao already has some understanding of the performance of this flying saucer car. But when there is no formal test flight, all its technical parameters can only be in a theoretical stage. Only after the test flight is actually carried out, can we know whether some technical parameters of this flying saucer car are in line with the theory.
The flying saucer car designed by Zhao Zhongyao can fly at a maximum speed of Mach 10, which means it can reach a speed of about 10,000 kilometers per hour. But this is only a theoretical speed, and how much it can actually achieve can only be known through experiments.
And the turning radius of a flying saucer car. The theoretical technical parameters of Zhao Zhongyao's design are no more than five meters. In other words, it is almost turning in place, and there is no need for a flight arc at all. It is possible to turn at a right angle. Because the width of the flying saucer car itself is five meters!
Now Zhao Zhongyao drove his beloved flying saucer car and began to rise high into the sky. He kept looking at the altitude and speed of the flight. Now the flying saucer's flying altitude has reached 1,000 meters, and its flying speed has reached 700 kilometers per hour, which is almost the flying speed of an ordinary airliner.
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