I! Pretending to Be Reborn, Director of Doomsday Hoax

That is,

This problem can be solved by changing the rotational speed of the rotor without affecting the rotational speed of the rotating magnetic field.

Joseph gathered many mechanical masters from Berry Country, and also invited Ain as the guidance of the physical theory, and finally let the rotor and the magnetic field change relative to each other.The energy expended in this is countless.

As Joseph finished his speech, the all-round universal wind turbine was finalized.

In the next half month, this kind of machine will come out.

"Next, it's the Berry Country Kite." Ain began the next procedure of the meeting.

Inside the Snowstorm Fortress, there is an almighty universal wind turbine.

On the outside, there are kites from the Berry Country!

Rui Di, the president of the Bone Song Berry Country Kite Development Department and the United Berry Country Wind Energy Resources Construction Machinery Association, got up.

This is an old white man with a big belly and a serious smile, with the shrewdness of a businessman shining in his eyes.

However, this is also a well-known scientist, who serves as a special engineer in Bone Song, and is even one of the pyramid figures in the world's wind energy machinery.

Ruddy stroked his long beard and said slowly:

"The high-altitude wind is characterized by high wind speed.

The wind speed at a height of 200 meters is about twice as high as that at 50 meters.

At 400 meters, the wind speed is double that at 100 meters.

If I calculate according to the direct ratio between the wind energy and the cube of the wind speed, for the same sweep area, the high-altitude wind energy is dozens of times higher than the ground wind energy!

In addition, high-altitude wind has other characteristics, such as wide distribution, high stability, and continuous all year round.

In the era of extreme cold, the power generation of high-altitude kites can exceed 90.00% in theory and practice! "

He coughed twice violently.

He is already 70 years old. In fact, he has already retired to the second line. However, the kite of the Raspberry Country was originally proposed by him.

That's why it was activated again in a special period.

"Actually, kites originated in the Dragon Kingdom and have a history of more than 2000 years. They are the earliest artificial flying machines in the world.

The invention of the kite has had a profound enlightenment on the development of science and technology. The kite was also used in war, and the aircraft was born in the past century.

It's just a pity that the country of Longguo never thought that kites could be used to generate electricity, and this will also be one of the sharp weapons of our Berry Country in the extremely cold era! "

After all,

Ruidi also projected the "Berry Country Kite" designed by his team.

That device looks more like an airplane.

There are wings, a vertical tail, a horizontal tail, a propeller, and ailerons and flaps on the wings.

Reddy said: "This thing is indeed similar to an airplane, but under it, there is a steel cable that drags the ground device to rotate or swing to generate electricity, and it is dragged by the wind, that is, the flowing air. So, it’s actually more appropriate to call it a kite.”

Speaking of "zero five zero", Reddy is still a little proud.

The Dragon Country is indeed a place with a lot of treasures, but the people of the Dragon Country today don't know how to use the wealth of the ancients.

If this Berry Country kite comes out, it will slap the people of Long Country in the face!

Rui Di introduced the principle, saying:

"When flying a kite, the plane of the kite is almost perpendicular to the direction of the wind, thus producing the greatest upward pull, which acts on the strings of the kite. The strings of the kite pull the turntable (up) fixed on the ground to make it rotate, Then the turntable drives the generator, and when the generator rotates, electricity can be generated."

"Of course, this kind of kite is specially designed by us, which is similar to the design of an airplane. However, after it is specially designed, it has a large wind-receiving area, light weight, and strong wind resistance.

"The power generation kite has wings, which generate lift under the action of the wind, making the kite fly in the air.

Flaps are installed on the trailing edge of the wing, and adjusting the flap can increase the lift of the wing.

Ailerons are also installed on the trailing edge of the wing, and the adjustment of the ailerons can make the wings on both sides produce different lift forces.

The flaps and ailerons are installed symmetrically on both sides of the wing, the wings are installed on the fuselage, and the tail of the fuselage is equipped with a vertical tail to change the direction of flight.

The tail of the fuselage is equipped with a horizontal stabilizer to adjust the upward or downward flight. "

Reddy breathed a sigh of relief. His body was considered poor among this group of scientists, even worse than the 98-year-old Ain and Joseph.

It looks like he will not live to be 85 years old.

However, at this moment, he looked excited, and continued: "Through the adjustment of the aileron, vertical tail, and horizontal tail, the kite can perform various rolling movements.

"There are also four wind turbines installed on the wings, and each generator has a three-bladed wind rotor in front of it.

"The kite's traction rope is wrapped with a power cable, which can transmit the electricity generated by the kite's wind generator to the ground!" He can already imagine that scene.

When the wind blows the kite into the sky, the kite is suspended in the air, relying on the wind in the air to blow the wind wheel to rotate and drive the generator to rotate to generate electricity.

The wind speed in the air is one to two times greater than that on the ground, and the same area of ​​the wind rotor can obtain power several to dozens of times higher than that on the ground.

But it is impossible for a kite to bring a large-sized wind wheel into the sky, and a small wind wheel at high altitude has no obvious advantage over a large wind wheel on the ground.

Therefore, Ruidi adopted a new mode of operation, so that the small wind wheel of this kite can obtain more power.

Through special modification, Ruidi made the flying speed three to five times higher than the wind speed, so that the power generation of the small wind wheel will increase by tens to two hundred times!

And the way it works....

Similar to a kite.

Ordinary kites, when floating in the air, will constantly somersault and circle.

That is because the kite is not adjusted properly, the structure is asymmetrical and other reasons.

The perfectly designed, almost error-free Raspberry kite can fly in circles in the air according to the predetermined cherry tree.

When the kite takes off, the wind rotor blade is used as the propeller, and the generator is used as the motor.

The four propellers rotate at high speed, and the kite takes off vertically.When the kite reaches the appropriate height and distance, the kite adjusts the flying angle and uses the wind to propel it into a circular flight. During the circular flight, the propeller rotates under the action of the wind.

Retracting the kite also utilizes the propeller to perform vertical landing.

Ain and Joseph were both fascinated.

Joseph subconsciously asked a question that a mechanic would ask, and said, "Have you calculated the specific parameters, such as how long the rope we need?"

In his opinion, this is a very complicated calculation, and it is also related to the success or failure of the kite in this country.

jTU right—

Joseph Yi frowned and said, "'"How can the generator be in a state of continuous power generation? "

When the kite rises under the action of the wind, it drags the winch on the ground to generate electricity.When it reaches a certain height, it needs to be retracted and released again.

In the process of retracting, although no work is done, the power generation of a single kite is intermittent. Is it possible to use multiple kites to drive the same generator?

This is actually the arrangement of the all-round universal wind turbines.

Do you want to use it on the Berry Country kite too?

After a while, Reddy smiled and said: "As Professor Joseph guessed, we plan to use multiple kites to generate electricity continuously!

"When one kite is launched into the air to generate power, the other kites return in the opposite direction, and multiple kites work in turn, so that the generator is in a state of continuous power generation!"

"As for... the length of the rope you said.

"We've also done the calculations.

"According to the principle of a kite's circular flight, a simple analysis,

"Combined with the magnitude and direction of the actual external wind speed, U and V are the forward speed of the kite,

The v arrow line is the air velocity felt by the kite movement, so it is opposite to the movement direction.

The composite speed w of v and u is the wind speed really felt by the kite, which is called the relative wind speed. The relative wind speed w acts on the wing of the kite, and the force on the wing is F, which is the combined force of lift and drag. Under the traction force of the rope, because the rope is very long, the kite can only move horizontally. The component force of F in the horizontal direction is Ft, and the force Ft is the force that pushes the kite forward continuously.

Thinking from another angle, the wing can be regarded as the blade of a large wind wheel. The circular flight of a kite is the same as the rotation of the blade, that is, a section of blade rotates around the center of the circle. The diameter of the circle is several hundred meters, and the swept area is a circle. ring part,

It can be seen that although the kite is small, the swept area is still much larger than any ground wind turbine, which can capture more wind energy!

From the perspective of ordinary wind turbines, the tip speed ratio is usually greater than 3, that is, the speed of the kite flying in a circle is more than 3 times greater than the wind speed, reaching tens to hundreds of meters per second.

How long is the rope needed, how high in the air and with what radius can a circle fly to obtain the maximum power generation efficiency?

According to theory and experience, it is controlled by computer. There are also various sensors and computers on the kite to ensure the perfect flight of the kite.

A kite can fly in a circle in the air, in fact, it can be approximated as a figure-of-eight flight path.

To solve the twisting problem of the traction rope, it is also necessary to ensure the normal transmission of power.The rope of horizontal figure-of-eight flight can not be twisted, because the flying width is big, needs longer rope.

Due to the high-speed flight of the kite, the speed of the wind wheel is very high, and the direct drive generator with a small diameter can have a large output power, and the rope is estimated to only need about 8000 meters! "

Reddy was doing calculations.

The rope of 8000 meters should be the maximum.

Snowstorm Fortress itself also has a height, more than 50 meters.

Some of the Berry Country kites set on the surface may need a longer rope length, more than 7000, 8000 meters or so.

On the top of the Snowstorm Fortress, more than 8000 meters of rope may be needed.

Of course, due to the limited space at high altitude,

Therefore, the layout of the Berry Country kites requires height control in the later stage to ensure that different kites are at different heights and make full use of their functions.

Reddy said: "In my design, countless sliding tracks will be laid on the giant wall of wind and snow.

And these sliding tracks will be driven by the Berry Country Kites after receiving wind energy, and then drive the generator under the sliding tracks to generate electricity! "

With a smile on his face, Rui Di said: "Master Commander, Joseph, Professor Ain, we have already set up a high-altitude wind farm in Texas, you can follow me to have a look." Good! "

Joad couldn't wait.

He really wants to see what kind of powerful weapons the top mechanics of Berry Country can produce in the era of extreme cold!

The nuclear difference machine has plunged the entire country, and even the world, into a continuous downturn.

Now, Berry Country needs something to re-prove its status as the world's hegemon! !

Texas.

At this moment, Texas has already recovered from the impact of the 721 meteorite crash.

At that time, the power supply committee once skyrocketed the price of electricity thousands of times when the meteorite fell, and in the end it even reached nearly [-] yuan per kWh.