Satellites need electricity. Different satellites use different electricity. Early satellites were limited by size, weight and technical conditions. Most of them used chemical energy batteries as their energy system, such as silver-zinc batteries.

For example, Dongfanghong-1, the first satellite launched by Han, is a typical satellite using chemical energy batteries. The silver-zinc battery equipped with it has an estimated working life of 20 days and an actual working time of 28 days, which is considered to have overfulfilled the mission.

At the same time, due to the short battery life, this kind of power supply method is not commonly used. Now the most commonly used is solar cells.

Solar cells can generate electricity as long as they have sunlight. However, they can only generate electricity and cannot be stored. Therefore, a power storage society is needed.

The combination of solar cells and accumulators is the choice of most satellites.

Because solar panels are greatly affected by the external environment, many reasons such as the height of the satellite orbit and the angle of sunlight will affect the power supply of solar panels. Even the satellite itself sometimes affects or restricts the use of solar panels due to mission load, technical conditions and other factors. Therefore, even if the energy systems look similar, the specific circumstances of each satellite are different.

At the same time, the layout of solar cells is also different.

Early satellites attached solar cells to the surface of the satellite's stars, but due to their small area, the power generation was not high. Later, most satellites put tens of thousands of solar cells on a board with a large area, and then installed the entire solar cell panel on the outside of the satellite body, which greatly increased the power generation.

However, it is impossible for this kind of plate-shaped solar cell to be directly installed in the rocket, so it is in this state when it is launched.

Moreover, in order to make the solar panels on the satellites always face the sun to obtain maximum power, the solar panels on many satellites adopt some advanced technologies: one is equipped with a driving mechanism to rotate the solar panel; the other is The sun sensor is used to capture the position of the sun, thereby controlling the driving mechanism to rotate the solar wing, so that the sunlight is as perpendicular to the solar wing as possible, and providing sufficient energy for the satellite.

But now, none of these technologies in Han has achieved a breakthrough, so it adopts the most conventional design. The solar cells are directly attached to the surface of the satellite. They are all covered and more than 30,000 pieces are attached.

This has also caused a problem. These battery panels are all black, which absorbs heat and heats up the interior of the satellite, which also makes the internal battery temperature high!

This problem has never happened before. Experts are shocked. Experts in satellite battery design are even more anxious with red faces and sweat on their foreheads! Because the satellite is like the human body, if the "high fever" continues, the lighter ones will "burn" the system out of trouble; the more severe ones will completely "burn" the satellite and even cause an explosion!

Launching a satellite requires a huge investment, but it can't be so frustrating.

Everyone is anxious, even on the measuring boat, everyone is thinking about solutions.

However, there is no good way.

"Now, the most important thing is to let the temperature of the satellite come down first." After hearing Colonel Chen's words, Qin Guan gave his opinion: Adjust the satellite's posture from a wide angle, or even put it down!

It was okay at the beginning, but after standing up, something went wrong, indicating that the satellite's posture was not appropriate, and it received direct sunlight, which caused the internal temperature to become too high.

"Yes!" Colonel Chen said, "I will report to the Measurement and Control Center immediately."

Qin Guan’s suggestion is risky, but even if it is risky, give it a try!

Soon, the measurement and control center sent a response, just follow this suggestion!

Following a series of instructions, the satellites in the sky lay down obediently. Immediately afterwards, the remote control system issued another command to erect the satellite again. After repeated adjustments in this way, the satellite lay down and stood up sometimes in the sky, sometimes stood up and then lay down, turning seven or eight somersaults in a row, and finally determined to be in a posture temporarily.

As the satellite avoided direct sunlight, the temperature began to drop.

"Mr Qin, your opinion is not bad. According to the news from the Measurement and Control Center, the temperature of the satellite has temporarily dropped!" Colonel Chen said.

Qin Guan sighed. The aerospace industry is also full of difficulties. Now that he has participated in it personally, he understands many of the difficulties.

It’s just that it’s fallen down and the temperature has cooled down. I don’t know whether the satellite can guarantee normal communication with the ground.

After it can be resolved, whether the satellite can successfully locate the target is still a difficult problem.

All these will be handed over to experts in spaceflight. For Qin Guan, he was just a stopover.

Qin Guan returned to the destroyer, and now Qin Guan looked at the rippling sea again. Qin Guan knew that a tragic sea-air battle would soon begin.

In front of Qin Guan, General Zhao and others were all meditating on the chart, as if they were fighting this naval battle.

"It's strange that Baiyin Country obviously has an aircraft carrier, but since the start of the war, their aircraft carrier has hardly moved." Captain Wei said.

"An aircraft carrier must have the entire system to be able to have combat effectiveness." Qin Guan said: "The Niu Guoren sank their 10,000-ton battleship, and the entire Silver State Navy was frightened. They all wanted to avoid the war to ensure safety. , Instead of taking the initiative to attack, besides, even if they are dispatched, their aircraft carrier is not very effective."

The May 25th aircraft carrier is the only aircraft carrier in the silver country. It belongs to the giant class of the cattle country. It has a full displacement of less than 20,000 tons and a maximum speed of only 24 knots. Such an aircraft carrier is destined to be a tasteless existence.

Because the speed is not enough and the power of the catapult is not enough, whether they can be dispatched depends on whether the sky is beautiful. If the sky is not strong and the wind is not blowing, their fighter planes cannot take off against the wind.

The A-4 Skyhawk attack aircraft above, because of lack of advanced electronic equipment, can only throw bombs to attack. How powerful is it?

If Han State wants to build an aircraft carrier, it must not engage in this kind of tasteless stuff. Although the super aircraft carrier has a large investment and high operating costs, it is the only choice.

This is also the path that the West has gradually taken. After this naval battle, the people of Niu knew that their invincible-class aircraft carrier was no longer good, and later generations finally returned to the road of medium-sized aircraft carriers.

In order for Han to develop aircraft carriers, it must be a super aircraft carrier with a displacement of more than 50,000 tons, and these aircraft carriers must also have a complete supporting formation.

This road is still very far away!

Thinking of the aircraft carrier formation, Qin Guan sighed in his heart, when the country's strength has not developed, the aircraft carrier formation cannot be engaged, at least, it will take more than ten years, right?

Now, let's take a look at this world-famous sea-air battle and learn from it.