"Before the rocket launch mission, we often see the words 'opportunistic launch' in media reports, which actually refers to meeting the minimum launch conditions of the launch window."

Today, many executives from the Nanshan Department came to the Northwest launch site.

As the person in charge of Daystar 9, Zhao Siyu is personally responsible for explaining things related to rocket launches.

Because now that the rocket is launched, it is time to wait for the best launch window.

Taking advantage of this waiting time, Zhao Siyu felt that it was necessary for the group executives to have a good understanding of the knowledge related to rocket launches.

This should be very beneficial to the arrangement of some things for Daystar.

"The minimum launch conditions stipulate that the rocket can meet the needs of the mission, at least some necessary conditions to be met, which are mainly divided into the rocket's own conditions and external conditions."

"The rocket has to do a variety of physical examinations before leaving the factory, and when it arrives at the launch site, it has to confirm its status again, just like athletes have to do some warm-up exercises before the competition to make it eligible to play."

"This is the first factor in the selection of opportunities, and the rocket's own indicators meet the launch conditions."

"Our Daystar 9 has completed all relevant confirmations and is ready for launch."

Zhao Siyu saw that Cao Yang listened very carefully, and his enthusiasm for introducing it was even higher.

"The external conditions for rocket launch are more complicated."

"Rocket launch is a high-risk, complex systems project."

"At the beginning of the design, our designers will design the rocket itself to be rainproof, anti-electromagnetic interference, anti-strong wind, etc., so as to reduce the impact of environmental factors on the rocket."

"The value of each type of rocket that can withstand environmental factors matches the magnitude of the rocket's resistance during the design process."

"Our Daystar 9 is undoubtedly doing a very good job in this regard."

"The natural environment is changeable and uncontrollable, and once these factors exceed the expected launch standards, they may cause damage to the rocket body and affect the success or failure of the rocket mission."

"There are painful lessons in history when space accidents were caused by weather."

When Zhao Siyu said this, he hesitated slightly, thinking about whether talking about those bad cases would give everyone an unlucky impression.

However, he was not sure that the launch would be successful.

Even if today's launch is successful, it may not be successful every launch in the future.

So it doesn't seem to hurt to do some psychological construction for everyone.

Thinking of this, Zhao Siyu continued: "On January 28, 1986, the 'Challenger' space shuttle was forcibly launched despite the cold weather and the warnings of rocket engineers, and the rubber ring on the booster was damaged by cold hardening, resulting in propellant leakage, the explosion of the space shuttle, and the death of seven astronauts. ”

"On March 26, 1987, when the United States launched a high-value military communications satellite on a Centaur launch vehicle, it encountered a thunderstorm and lightning struck the rocket, causing the launch to fail."

For some important events in the history of rocket launches, Zhao Siyu can be said to be well aware.

You can just give a few big examples.

"Among the various environmental factors, what has the greatest impact on the launch mission of the rocket?"

Cao Yang asked a question that many people were curious about.

After all, when it comes to choosing the right time to launch every day, in fact, most people are not clear about what factors should be combined to choose the right time to launch.

Now that you've come to the launch site today, let's get to know each other.

"Among many factors, the influence of high-altitude winds on the launch is more prominent."

"Before each launch, the high-altitude wind on the launch day is measured and forecasted, and the flight trajectory of the rocket is optimized and adjusted in combination with the measured wind field data, so as to avoid the load of the rocket when flying at high speed in the wind field exceeds the allowable range of the rocket."

For Zhao Siyu, this question is obviously a scoring question.

So he didn't even need to think about it, and he gave the answer.

"The influence of meteorological factors on the launch of the rocket cannot be ignored, but as long as the perfect plan preparation is done before the launch, the meteorological observation is done in advance, and the final launch window is determined according to the weather conditions, the impact of bad weather on the launch mission can be effectively avoided."

Zhao Siyu then added.

So as not to leave everyone with the impression that it is too troublesome to carry out rocket launches.

This is obviously not beneficial for the continued development of Daystar 9 in the future.

"Mr. Zhao, can there be a more accurate answer to this launch window, and how long does it take to find this window?"

Xia Qingqing also came to Cao Yang's side at this time.

As a star figure among the enterprises in the Nanshan system, Xia Qingqing is now in the limelight.

After all, Honor Technology contributed more than 200 billion profits to the group last year.

That's a level that no other business can do.

Even except for Xingchen Automobile, the turnover of other companies has not reached more than 200 billion yuan.

"The width of this launch window is very different from the type of satellite, and low-Earth orbit satellites are generally 'day windows', and there will be opportunities to launch every day."

"The lunar probe is a 'lunar window' and there are opportunities to launch every month, but only those few days are suitable."

"Extraterrestrial objects such as planets, asteroids and comets, on the other hand, have a year window, that is, they can only meet a launch opportunity once a year or even a few years."

"Of course, there are many conditions that affect the launch of the rocket, such as when the launch is more convenient for ground observation, when the launch is convenient for ground tracking and control, when the launch is convenient for the landing and recovery of the spacecraft, and so on."

"These are all issues that need to be considered comprehensively."

"On the whole, the recent launch missions of our Daystar 9 are all based on the development of the Starlink satellite system to determine the launch mission, these satellites are considered low-earth orbit satellites, and theoretically there are suitable opportunities every day."

"It's just that this is the first launch, and we are more cautious, fully considering the wind speed, clouds, temperature and other conditions, and choosing the most suitable launch window as much as possible."

Zhao Siyu explained this, and the people present knew a little more about the rocket launch.

At least not to be blinded by the mention of a rocket launch, and not at all to know what to focus on.

"Mr. Cao, there will be more than ten minutes to reach the best launch window, we can go to the console to watch, the effect will be better."

Zhao Siyu is a frequent visitor to the Northwest launch site.

Even before, this launch site was under their jurisdiction to a certain extent.

So when he arrives here, it's like coming home.

"Let's go, let's go to the console."

Cao Yang knew that there were quite a few people from other units who came to participate in the launch today.

I almost want to go over to greet everyone, and then watch the official launch of Daystar 9 together.

……

"Mr. Cao, your Daystar No. 9 is quite spectacular."

"The design is unique."

When Cao Yang came to the console, he immediately met Qian Junfeng of Aerospace Science and Technology and Wu Feng of the Electric Technology Group.

Everyone is barely an old acquaintance, so naturally they have to have a good greeting.

"Daystar 9 is still a little too small, only more than three meters in diameter."

"The Daystar 9 MAX we are working on has a diameter of 5 meters."

"The starship series that will be pushed out in the future will have a diameter of 9 meters, and this big fat man will be really spectacular at that time."

Be humble when you should be humble, and don't be humble when you don't.

Otherwise, everyone will look down on Daystar Technology a few points.

"Big fat?"

"You're starting to work on heavy rockets now?"

Although Qian Junfeng has heard some rumors about this before, he is even making preliminary preparations for the research and development of the Long March 9 within aerospace science and technology.

But there is still a long way to go before the real launch takes off.

But now listening to the meaning of Cao Yang's words, it seems that Daystar Technology is going to launch the big fat man into the sky in a few years.

The situation is completely different.

"Reserve generation, R&D generation, application generation, I didn't learn from you."

Cao Yang casually found a reason.

Anyway, now it's just everyone blowing water.

are all Chinese enterprises, if Daystar can quickly handle the research and development of heavy rockets, that significance is also extraordinary.

Even in the future, some launch missions in Huaxia may be handed over to Daystar to complete.

"I heard that you are burning money very crazy, hoping to compress the time for rocket research and development through large-scale investment of manpower and material resources."

"However, there are some tests and verifications that cannot be skipped, and it may not be a good thing to do it too quickly."

Qian Junfeng's reminder is not malicious.

He simply felt that the state of Daystar was a bit subverting his cognition.

So I want to remind Cao Yang, lest he be a "layman" and be fooled by the people below.

"Mr. Qian has a point, every step of rocket research is very important, and we attach great importance to it internally."

Cao Yang didn't want to have an in-depth exchange with Qian Junfeng on this topic.

He can't tell Qian Junfeng that he has a cheat, right?

That must not be grabbed slice study?

And in the process of everyone's greetings, the launch window of Daystar 9 slowly arrived.

The atmosphere of the whole scene slowly became solemn.

After all, the rocket has not yet been officially launched, and no one knows if there will be anything special in the middle.

With the confirmation work of the controller one after another, Daystar 9 finally ushered in its own launch moment!

Three!

Two!

One!

Ignition!

It is not only the power fuel of Daystar 9 that is ignited, but also the warm hearts of more people.

00:00 - After everything is OK, Daystar 9 is officially ignited and lifted off.

01:10 - Reaching double the speed of sound, the first stage rocket is capable of delivering a maximum thrust of more than 80 tons.

01:16 - Maximum aerodynamic load point is reached, everything is normal.

02:33 - 9 engines shut down, burning for a total of 152 seconds.

02:36 - The first stage rocket separates from the second stage rocket.

02:38 - The second stage ignites the rocket, which can provide a maximum thrust of more than 100 tons and burn for 6 minutes.

03:40 - 5.2 m diameter fairing, detached and discarded.

06:22 - Part of the engines of the first stage rocket work, decelerating with the help of thrust, preparing for landing.

At this time, it is the time when everyone is most concerned.

The previous process basically means that the Daystar 9 will be used as a rocket to launch the satellite, and this mission has been successfully completed, and it will be up to us to see if the satellite can be successfully sent to the designated orbit.

But at this time, in fact, the problem is not very big.

Instead, the first-stage rocket, which is the core part of the recyclable, to see if it can land smoothly.

"Mr. Cao, according to our simulation, in about two minutes and ten seconds, the first-stage rocket will land at the temporary landing site built three kilometers next to the northwest launch site."

"The whole process is fully automated, coordinated and controlled by the flight computer, engine controller, precision guidance system, etc."

Zhao Siyu's mood is also quite nervous now.

Although even the first stage of the rocket did not land successfully, it was actually quite successful.

After all, the first rocket launch sent the satellite into the sky, which is already more powerful than many enterprises.

Most countries don't have that kind of strength.

"Why did the first-stage rocket fire again in the air just now?"

Mi Ying next to her couldn't help but ask a question that was not so high-end.

In her understanding, the recoverable part of the rocket should be ignited when it is about to land, right?

"That's right, after the first stage rocket starts the recovery process, it must be ignited again."

"Because at this time, it is flying very fast in the air, and if it does not slow down, it will be burned up when it enters the atmosphere."

"When the rocket becomes a meteor, there is no way to recover it."

Zhao Siyu glanced at Cao Yang and patiently explained to Mi Ying next to him.

Just talking can also relieve the tension right now.

06:42: The first stage rocket shuts down its engines again and rapidly falls towards Earth.

08:04: The first stage rocket ignites again.

This time, without waiting for Cao Yang or Mi Ying next to him to ask questions, Zhao Siyu himself quickly explained next to him.

"This is the third time that the recovery procedure has been activated, and the first stage rocket has been ignited again, which is also its last ignition, which belongs to the landing ignition."

"The purpose is to further reduce the speed of the rocket so that it can land smoothly."

"This time the duration is 31 seconds, after which the rocket will land at the landing site."

Just as Zhao Siyu was explaining, everyone was attracted by the images on the screen in the control room.

The movement of the first stage rocket of the Daystar 9 can already be seen above.

31 seconds, under that nervous mood, actually passed quickly.

When Daystar 9 landed accurately at the landing site, and the sound of successful landing was heard at the scene, a boiling sound resounded in the sky.

The first recyclable rocket independently developed by Huaxia has been officially recycled.

This is of great significance to the entire rocket launch industry.

"Mr. Cao, congratulations, Daystar No. 9 will surely go down in history and become an indelible product in the history of Huaxia Airlines."

Although Qian Junfeng's mood is a little complicated, the joy at this time is not pretended.

Although the products are from the side of Daystar Technology, everyone is a Chinese enterprise.

This is definitely a good thing for the whole of China.

"Produced by Nanshan, it must be a high-quality product."

"The comments of netizens have never been missed."

Wu Feng also praised beside him.

"The second-stage rocket is still flying in the air, and whether this launch is really all successful, it will take a while to know."

Cao Yang's words almost suffocated Qian Junfeng next to him.

Isn't that a success?

The two-stage rocket has entered the low-altitude orbit, turns off the ignition, and waits for a certain position to ignite again to send the satellite to the designated position.

In this case, the likelihood of a problem is very low.

It can be said that Daystar 9 has completed 99% of the launch mission.

That's just the last 1%.

"The complex problem of the recycling of the first-stage rocket has been solved, and the later control of the second-stage rocket is obviously not a big problem for Daystar Technology."

Although he was pretended to be by Cao Yang, Qian Junfeng definitely couldn't really be dumb at this time and didn't speak.

In that case, others thought he had an opinion about the success of Daystar 9.

After all, everyone is facing a lot of cameras at this time.

……

The launch mission of Daystar 9 was broadcast live on the website of Nanshan Film and Television.

Many Chinese netizens watched the launch.

When I heard the news that the first-stage rocket was successfully recovered, public opinion immediately broke out.

"The first time I watched the live broadcast of the rocket launch, it was so spectacular, and you could feel the grandeur through the screen."

"It's really successful, the cowhide that Mr. Cao bragged about has really come true."

"I didn't expect that we also have such a high-tech enterprise in Huaxia, which is very surprising."

"When is the next launch?" I'd love to see it nearby. ”

"The Starlink system has unknowingly started to launch the first batch of satellites, looking forward to it!"

"Recyclable rockets, I didn't expect it to be really made!"

"I feel that in the future, Daystar 9 will be launched every three or five days."

"It turns out that there are so many exquisiteness in rocket launching."

"Mr. Cao, when will you land on the moon?"

"I feel that the current goal of Nanshan Group is no longer on the earth, but in the sea of stars."

"No, didn't you find out? This rocket is actually named after Heilan House! ”

"The advertisement hit the rocket, and the Hailan House is also amazing."

"Daystar is really out of the ordinary."

……

All kinds of comments soon sent Daystar No. 9 and Heilan House to the hot search.

"Mr. Zou, the company is on the hot search!"

Zou Jianping, general manager of Heilan Home, and Zhou Liqiang, director of sales, were also invited to watch the launch of Daystar 9 on the spot.

However, their position is still a little far from Cao Yang, so they are mainly concerned about the changes outside themselves.

"What's the response?"

Zou Jianping has now begun to make arrangements for the company's listing next year.

This time he advertised on Daystar No. 9, and he had very high expectations.

This decision was not made by patting the head.

The advertising fee of 60 million yuan, if it is placed on other platforms, can come up with a lot of tricks.

But nowhere is the effect as obvious as that of Daystar 9.

"It's very good, I generally think we are very discerning, and it has also made many people reacquaint themselves with Heilan Home."

"The advertising company we arranged before will also let the relevant accounts conduct some public opinion guidance, so that it can develop in the direction of our favor."

Zhou Liqiang is also in a very good mood now.

After the launch of Daystar 9, the first stage of the rocket was successfully recovered.

The heat of this matter will definitely not dissipate in a day or two.

Even for many years to come, Daystar 9 will be the darling of the media.

Because there are still tens of thousands of Starlink satellites waiting for it to be launched.

So it is basically predictable that there will be a scene of the launch of Daystar 9 every month in the future.

The effect of this advertisement is absolutely leveraged.

"Looks like we're betting on the right thing this time."

"As long as it is something that Mr. Cao wants to do, it will definitely be successful in the end."

Zou Jianping is very glad that he chose to advertise on Daystar No. 9, and he is also glad that Cao Yang finally agreed to cooperate with Daystar No. 9 with Heilan House.

Otherwise, if Heilan House wants to become famous, I'm afraid it won't be so easy.

Just when Zou Jianping and Zhou Liqiang were communicating about the Daystar 9, everyone began to slowly continue to pay attention to the operation of the second-stage rocket in the control room that came over excitedly.

After all, the Starlink satellite is still waiting for it to be sent to the designated orbit.

26:45 - The second stage ignites again, restarts the vacuum engine, and propels towards a high-altitude orbit.

27:52 - The vacuum engine turns off, sending the Starlink satellites into an altitude of 35,000 kilometers to geostationary orbit.

35:38 - The second stage rocket separates from the satellite, and the entire space courier service ends smoothly!

"The launch of Daystar 9 has been successfully completed!"

As the words rang out from the console, everyone applauded excitedly again.

This time, Daystar 9 can be regarded as a complete completion of the launch mission.

The first launch was successful, which is a very rare situation.

Obviously, all the preparations made before the launch were not done in vain.

"Mr. Cao, the construction of our Starlink satellite system has made a good start, and the future is promising."

Zhao Siyu is finally completely relieved now.

Although it was winter, his forehead was covered with sweat.

It's even a little sweaty.

In the past half hour, he was definitely very nervous.

He was even the most nervous of all the people present.

"Everyone has worked hard, and the successful launch of Daystar 9 today is the result of everyone's hard work in the past."

Cao Yang was also relieved.

I basically focused on Daystar last year, and it seems that my efforts were not in vain.

"The only regret is that the current second-stage rocket cannot land and recover perfectly like the first-stage rocket for the time being."

"But we've been working hard and we're constantly developing new technologies and finding breakthroughs."

"Once successful, it will be the biggest positive for the space industry."

"From now on, humans can minimize space junk, at least in the second and third stages of the rocket."

Zhao Siyu's ideas are now also beginning to be rich and bold.

Since it is a recyclable rocket, it is natural to hope that both the first-stage rocket and the second-stage rocket can be recycled.

(End of chapter)