Under a quiet starry sky, a huge launch vehicle stands on the launch pad, like a sleeping dragon ready to take off. Its body is composed of countless precision parts, each piece has been carefully designed and strictly inspected, just for
Perfect coordination at this moment. The upper end of the rocket is a huge fairing, and inside the fairing is the soul of the rocket and the key to this mission, the Lunar Cargo 3 spacecraft.
"...Five, four, three, two, one, ignite, take off!"
As the countdown ended, Rocket's heart began to beat, and a powerful energy surged out from its core, like a giant dragon awakening from the abyss, rushing towards the endless starry sky above its head. Rocket's body began to tremble, as if feeling
It was hit by the coming impact, but its tough shell withstood the force without any wavering.
Suddenly, a dazzling light erupted from the tail of the rocket, piercing the dark night like a sharp sword. The rocket seemed to be pushed forward by an invisible force, getting faster and faster until it disappeared into the sky.
The moment the rocket took off, the entire launch site fell into a brief silence. Then, cheers, applause, and shouts merged into one. People cheered for this magnificent scene and were proud of those who worked hard for their dreams.
Inside the Xinyuehu Aerospace Command and Control Center in the Linghu Headquarters Park of Anxi Haoyu Technology, everyone returned to normal working conditions after a warm round of applause.
Because the successful ignition of the rocket is only the first step, there is still a long journey waiting for it. Wu Hao and Zhang Jun also attended the launch ceremony and are sitting here watching the entire launch process.
In fact, launch processes like this have become normal, and there is not much novelty. However, their arrival is not only to watch, but also represents the importance that the head office attaches to this mission and everyone.
After all, this is considered a major space launch mission, and they can't just ignore it. Wouldn't that be very chilling for these aerospace scientific research and technical personnel who are working on the front line?
Rocket booster detaches!
Primary and secondary separation!
As announcements came one after another from the speakers, everyone could clearly see that the two boosters and the core first-stage rocket were separated one after another, and the second-stage rocket began to relay the Lunar Cargo Transfer-3 spacecraft upward.
In fact, the two boosters and the core first-stage rocket did not separate at the same time. The two boosters separated first, and it took about ten or twenty seconds for the core first-stage rocket to separate.
Because it carries a lot of things and is heavy, it is necessary to make full use of the thrust of the rocket.
Regardless of these twenty seconds, the rocket can actually fly very far, no, it should be said to fly very high. Although the rocket does not take off very fast when it first ignites, it is a gradual acceleration process. By the time it enters space,
The speed can reach the first cosmic speed of 7.9km/s. Only by reaching this speed can the rocket enter orbit.
And this is just entering orbit. If you want to reach the moon, the speed must be increased. Although it does not need to reach the second cosmic speed of no less than 10.848 km/s, if you want to reach the moon quickly, its flight speed must be high.
Only at the first cosmic speed.
Although it only increases the speed by a small amount, this really stumps many people. Although as the lunar fever continues to ferment, more and more spacecraft and satellites have arrived at the moon, and more and more countries are participating.
.
However, most of the national space agencies and aerospace companies that later arrived at the moon actually found it very difficult to reach the moon, taking ten to twenty days, or even several months.
The main reason is that their launch vehicle technology is poor and their deep space remote sensing technology is also very poor, which is why it takes so long.
Because the technology of the launch vehicle is relatively poor, the thrust of the rocket is small, and the carrying capacity is weak, these spacecraft cannot reach the Earth-Moon Transfer Orbit at once. Instead, they rely on the spacecraft's own engine to gradually ignite, and then climb little by little and transfer to the Earth.
Moon transfer orbit, this process is very time-consuming, that's why it's done like this.
Haoyu Aerospace's Jianmu series rockets, especially the Jianmu-9 heavy-duty launch vehicle, can send the twenty- to thirty-ton Lunar Cargo Transfer-3 spacecraft to the Earth-Moon Transfer Orbit at one time without any additional cost.
Climbing up little by little.
In these twenty seconds at high altitude, the rocket can rise dozens of kilometers.
Of course, the cost of flying for an extra twenty seconds is also very huge. The core first-stage rocket is actually the same as the two boosters, and they are both bundled together with the core first-stage rocket of Jianmu-7.
So their internal fuel is actually the same, and there is no one who has more or less. The extra twenty seconds actually consumes the fuel needed for the rocket to land.
Because it is a recyclable and reusable rocket, when the rocket body is separated, the rocket body will fall downward. During the downward descent process, the rocket needs to be continuously decelerated.
Therefore, the rocket's engine needs to work continuously to slow down the rocket's landing process. This process also consumes a lot of fuel.
Therefore, in order to fly for an extra twenty seconds, a large amount of landing deceleration fuel needs to be consumed. So what should be done during the landing and landing process of this core-stage rocket?
Then we will officially shorten its landing distance, thereby reducing its landing time, which can greatly reduce fuel consumption.
The launch of a launch vehicle does not actually go straight up and down. It also rises along a certain angle. Therefore, we can see that in many launch missions, the fall point of the first-stage rocket is often hundreds or thousands of kilometers away from the launch site.
As for recyclable and reusable rockets, in order to facilitate recovery, the angular direction is usually controlled through grid wings after the rocket body is separated, the engine at the tail is used to change the landing angle, and then the rocket body is flown back to land at the launch site.
Nearby, this will facilitate recycling.
This is indeed convenient for recovery. After landing, the rocket body does not need to undergo complicated transportation work. It only needs simple maintenance and repair, and can be directly pulled down to the launch site next to it and launched again.
But the disadvantage of this is that it consumes a lot of fuel and also loses a lot of carrying capacity. In order to fly for an extra twenty seconds, the core first-stage rocket did not choose to fly back to the landing point. If it had landed directly below,
on the preset landing site or landing platform.
This time, the core first-stage rocket landed on Wu Hao's sea landing platform and was then transported back from the sea landing platform. In this way, a large amount of fuel can be saved for the core first-stage rocket.
But this is not enough. Zhou Xiangming, Chang Zhifei and the others also modified the Jianmu-9 core first-stage rocket that carries out the lunar cargo transport spacecraft, and added a deceleration module on the top of it.
