Chapter 496

Xiong Antai, as a senior manager of the company, is very pleased with the admiration of academician Yang. He himself is also attracted by the very good research environment in the company.

"Yes, your company has dug dozens of experts and researchers from our Aerospace Department. If the conditions are not good, how could they jump from the State Key Laboratory to your company!

If it wasn't for our good cooperation, these experts and researchers, you can see if we would release people! If you get a bargain, you can sell it! " Yang Mingliang looked at Xiong Antai with disdain and said.

"Ha ha..."

his words also made everyone laugh. Indeed, people from the Aerospace Department went to the laboratories and workshops here to have a look, hey! Many acquaintances!

While laughing and joking, we inspected the joint detection and monitoring tasks of both sides. There is only less than a week left before the launch date. These work is related to whether the rocket can be launched in the window time on time!

What is a launch window? Launch window refers to the relatively appropriate time range of launch vehicle launch, and the size of this range is also called the width of launch window. For spacecraft, the selection of launch window is very important.

Although the length of the launch window has a certain period of time, the effect of launching at the front and rear points of the launch window is not the same. Generally, the launch window will not change, but it is not absolute. If the weather does not help, the time will be adjusted.

According to various constraints, the launch windows of various satellites have their own rules. For different satellites, even if the orbit is the same, the launch window may be quite different.

Generally speaking, due to the long range of the rocket launching section when launching a geosynchronous satellite, the angle between the meridian plane of the launch point and the main axis of the transfer orbit (the line between the orbit perigee and the apogee) is large, and the orbit change operation of the satellite is carried out at the apogee of the transfer orbit.

If in order to satisfy the constraints of the sun angle and the sun earth angle, the apogee should be in the daytime environment, then the launch of the geostationary satellite will be carried out at night. The width of the launch window is generally about 1 hour.

"Academician Yang, according to the current observation data, can we launch" zero window "? Although our satellites and space telescopes have surplus fuel, it's better to reduce the fuel consumption during orbit change!

In this way, they can stay in space a little longer, especially space telescopes. Our company does not have the technology to refuel them in space.

The longer they stay in space, the more data we'll get if we want them to be able to provide us with stable observations Zhang asked with a smile.

To tell you the truth, he has been under too much pressure during this period. He has to consider the performance of three satellites and two space telescopes, whether they can work normally after launching into space, and how long they can work.

As the person in charge of deep space laboratory, the pressure brought by these things has made him not sleep well for several days, so now he is a little nervous, and we can understand that.

"Director Zhang, you don't have to worry about that. According to the data observed so far, even if we can't launch" zero window ", we can launch them into space one by one within the specified launch window!

And you choose to launch in winter is also a very correct choice. There is not much rainfall in the South Island in the whole winter, and there are not too many tropical cyclones, so the wind speed is more suitable for launching time.

These conditions, together with the rain bomb you applied for, should allow your rocket to be launched in the launch window.

What's more, as you said, your launch vehicle technology is really advanced. The load is nearly twice as large as the Falcon 9 of the same size, which allows your satellites and space telescopes to carry more fuel and equipment.

With the fuel margin, even if it is not in the "zero window" launch problem is not big, so you do not have to be so tense, always so nervous, it will have adverse effects on the mission! " Yang Ming Ming Ming smiles and comforts him.

He can understand Zhang's nervousness. After all, this is his first time as a leader to launch a rocket satellite.

In addition, he launched five loads in a short period of time. It is impossible to make him not nervous, so I can only comfort him.

"That's right, but I still hope that our rockets can be launched in the special window" zero window ", so that our satellites and space telescopes can stay in space for a few more months, which will bring more benefits to the company." Zhang said with a smile.

The reason why he always wanted to launch the company's satellites and space telescopes in the "zero window" launch period is that this launch window is really the most appropriate!

Theoretically speaking, the rocket is successfully launched in the launch window and the satellite is put into the predetermined orbit. "The so-called" zero window "can be seen as launching within a second or more of a given launch time.But generally speaking, the "zero window" also has a certain time width. It is necessary to aim at the front edge of the window to launch. This kind of on-time launch will improve the efficiency of satellite orbit transfer, save more fuel, and make the follow-up work more smooth.

When the "zero window" is launched, there is almost no room to adjust the launch time of the rocket.

"Zero window" launch pursues "zero error, zero error, zero fault, zero defect and zero omission". To achieve "zero window", it is necessary to overcome the difficulties.

Rocket launch is a complex system engineering, tens of thousands of sets of equipment need to be troubleshooting, risk analysis and operation experiments, and thousands of posts need to coordinate and cooperate.

Any equipment failure, any post negligence, even some operators even sneeze, "zero window" will pass by.

in order to ensure that the rocket can be launched in the "zero window", the launch center must carry out the support work according to the requirements of the quality system.

First of all, there is guarantee for personnel, then for equipment, and thirdly for the specification of experimental documents of various systems. In addition, there are various software guarantees such as command system software, satellite and rocket software.

The weather system is required to accurately and carefully forecast the lightning, precipitation, temperature, wind direction, cloud cover and other meteorological elements of the launch window.

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