Vol 2 Chapter 506: Pursue "0 Window" launch

As a senior of the company, Xiong Antai feels very refreshed by the envy of Academician Yang such a big deal. He himself was 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 hadn’t been for our cooperation relationship has been very good, these experts and researchers will see if we will let them go! Get cheap and sell well! "Yang Mingliang looked at Xiong Antai with contempt and said.
　　 "Haha..."
　　 His words also made everyone who heard it laughed. Indeed, people from the aerospace department went to the laboratory and workshop here to take a look, hey! So many acquaintances!
　　 Everyone was talking and laughing while inspecting the detection and monitoring missions that the two parties cooperated together. There is only less than a week left before the launch date. These tasks are related to the key to whether the rocket can be launched in the window on time!
　　 What is the launch window? The launch window refers to the appropriate time range for the launch of the launch vehicle, and the size of this range is also called the width of the launch window. For spacecraft, the choice of launch window is crucial.
　　 Although the length of the launch window has a certain time, the effect of launching at the front and back points of the launch window is different. The launch window will not change under normal circumstances, 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 also have their own rules. Even if the orbits of different satellites are the same, the launch window may be quite different.
　　 Generally speaking, due to the long range of the rocket launch section when launching a geosynchronous satellite, the angle between the meridian plane where the launch point is located and the main axis of the transfer orbit is large, and the satellite orbit change operations are all performed at the apogee of the transfer orbit.
　　 If the apogee should be in a daytime environment in order to meet the constraints of the sun angle and the sun-earth angle, the launch of the geostationary satellite should be carried out at night. The width of the launch window is generally about 1 hour.
"Academician Yang, based on the current observational data, can we achieve a "zero window" launch? Although our satellites and space telescopes have fuel surplus, it can reduce some of the fuel they consume when changing orbit OK!
　　 This way they can stay in space for a longer time, especially for space telescopes. Our company has not yet mastered the technology to refuel them in space.
　　 If we want them to stably provide our company with observational data, the longer they stay in space, the more data we can obtain. "Zhang Hanxiu asked with a smile.
　　 To be honest, his pressure during this period of time is really too great. What is the performance of the three satellites and two space telescopes, whether they can work normally after launching into space, and how long they can work are things he has to consider.
　　As the person in charge of the Deep Space Laboratory, the pressure these things have brought him has kept him from sleeping well for several days, so now he is a little embarrassed and everyone can understand.
　　 "Director Zhang, don't worry so much. According to the data currently observed, even if we can't make a'zero window' launch, we can launch them one by one into space within the prescribed launch window!
　　 And your choice to launch in winter is also a very correct choice. There is not much rainfall here in the South Island throughout the winter, and there are not too many tropical cyclones, so there are more choices for the wind speed to be suitable for launch.
　　 These conditions, together with the rain bomb you applied for, should be able to launch your rocket within the launch window.
Also, as you said, your launch vehicle technology is really very advanced. The load capacity is nearly double that of the Falcon 9 of the same size. This allows your satellites and space telescopes to carry more fuel and equipment.
　　 With the fuel allowance, the problem is not big even if the launch is not in the ‘zero window’, so don’t keep being so tight, always being so nervous, it will have an adverse effect on the mission! "Yang Mingliang smiled and comforted.
　　 He is also understandable about Zhang Hanxiu's nervousness, after all, this is the first time he has performed a rocket satellite launch mission as a leader.
　　 Furthermore, he launched 5 consecutive payloads in a short period of time. It is impossible to keep him from being nervous, so I can only comfort him.
"I said so, but I still hope that our rockets can be launched in the special window of the'zero window', so that our satellites and space telescopes can stay in space for a few more months. Come with more benefits!" Zhang Hanxiu said with a smile.
　　 The reason why he always wanted the company's satellites and space telescopes to be launched during the ‘zero window’ launch period~EbookFREE.me~ is mainly because this launch window is really the most suitable!
　　 Theoretically speaking, the rocket lifts off at the launch window and sends the satellite into the predetermined orbit, all success. "The so-called'zero window' can be regarded as launching within plus or minus one second of the scheduled launch time.
　　 But generally speaking, the "zero window" actually has a certain time width, and it must be launched at the front of the window. Such a punctual launch will be more efficient when the satellite changes its orbit after being sent to orbit, save fuel, and follow-up work will be smoother.
　　 There is almost no room for adjustment of the rocket’s launch time during the
zero window
launch. Usually, the rocket’s ignition is controlled regularly to achieve the
zero window
launch.
　　 "Zero Window" launch pursues "zero errors, zero errors, zero failures, zero defects, and zero omissions." If you want to achieve a "zero window", you have to get through the road.
　　 Rocket launch is a complex system engineering. Tens of thousands of sets of equipment must undergo troubleshooting, risk analysis, and operation experiments, and thousands of positions must be coordinated.
　　 Any equipment failure, any negligence in any post, even if some operators sneezed, the "zero window" would pass by.
　　 In order to ensure that the rocket can be launched in the "zero window", the launch center must carry out guarantee work in accordance with the high standards required by the quality system.
　　 Firstly, there is guarantee for personnel, secondly for guarantee on equipment, and the third is the standardization of experimental documents for various systems, as well as the guarantee of various software such as command system software, satellite and rocket software.
　　 We require our meteorological system to make accurate and detailed forecasts of meteorological elements such as lightning, precipitation, temperature, wind direction and cloud cover in the launch window.