Vol 2 Chapter 740: The landing begins!

Because the moon has no atmosphere, you cannot use a parachute to slow down. You can only use a variable thrust engine to lower the speed while landing. What is more different from the landing of the Chang'e-3 four-good probe is that the Infinite Gravity Group's Lunar Palace Explorer Luzhe's No. 1 detector landed more weight!
　　This makes the landing of the Lunar Palace Pathfinder No. 1 probe have more stringent requirements for the performance of the variable thrust engine, not only requiring greater thrust, but also higher requirements for the accuracy of the engine's thrust variation!
　　 Of course, it does not mean that a good variable thrust engine can guarantee the smooth landing of the probe. This is a very systematic project, which involves a lot of technology.
　　 The power drop process of the detector is a process with a short time and a large change in speed, which cannot be controlled by the ground in real time. In this regard, Infinite Gravity Group, with the help of the national Chang'e engineering and technical team, designed and customized a special guidance, navigation and control system.
　　 This guidance, navigation and control has designed a special sensor to perform monthly speed measurement, ranging and terrain recognition to ensure the autonomous guidance, navigation and control of the probe during the landing phase.
The equipment used in this system includes an inertial measurement unit (IMU) like autonomous navigation, laser range sensor, microwave range sensor, microwave velocity sensor, optical imaging sensor, laser 3D imaging sensor, image data processing Computers, horizontal mobile thrusters, etc.
　　The most important thing is to design a special obstacle avoidance program for this system, which includes approaching section, hovering section, obstacle avoiding section and slow descending section.
With the help of four lunar orbiting exploration satellites named'Clover' by female scientists in the Deep Space Laboratory, Infinite Gravity Group has not only digested and absorbed the detailed lunar satellite exploration data brought by the National Chang'e Project , And further verified these data with its own company's more advanced detection satellites.
The development team fully considered the impact of the physical and mechanical properties of the lunar soil on the impact and stability of the landing, and the physical and chemical properties of the lunar dust. Using special materials, design and technology, the development team developed a new landing buffer system to solve the above problems and ensure the detector In the process of soft landing, it will not tip over or sink within a certain attitude range, and provide firm support for the probe.
Scientific research is too sloppy. Even if everyone knows that the data provided by the National Lunar Exploration Project will not have any major problems, the data provided by others is not the same as the data detected by itself. The company’s scientist team still believes more in themselves. Data detected!
Regarding this point, the experts sent by the National Lunar Exploration Project to the company to conduct cooperative research are not only not angry, but are particularly pleased and supportive. At the same time, they also praise the scientific research of Infinite Gravity Group for making progress in such a short period of time. of.
Of course, I am even more envious of Infinite Gravity Group’s wealthy appearance. In order to save the time of data exploration, four "Clover" orbiting exploration satellites were launched at once, and the detection data is humming back every day. It’s said that even they don’t have a lot of data. After all, the technology of Infinite Gravity Group’s satellites is much higher than that of the satellites they launched before.
And this is also an important reason why the National Lunar Exploration Project is willing to cooperate more with Infinite Gravity Group. The investment scale and technology conversion speed of Infinite Gravity Group is too fast. If you don’t give money in the snow at the beginning, you will be paid for cooperation later. It's different.
With sufficient data support, the technical advantages of Infinite Gravity Group were immediately demonstrated. The simulated landing test of the artificial intelligence system allowed the protest team to clearly grasp all possible accidents during the descent process, and to analyze these possible accidents. The situation is preset in the control system to ensure that there will be no accidents during the entire autonomous descent of the lander.
　　 When the live video of the surveillance camera of the "Moon Palace Pathfinder" No. 1 detector is connected to the live connection, everyone knows that the most important moment is coming!
　　 "Switch to the autonomous landing system!" With the commander's order, the landing officially began!
　　 The entire ‘Moon Palace Pathfinder’ No. 1 detector boarded and entered the set landing program, and then under the autonomous control of the program, the ignition of the engine was started!
In order to be able to more accurately control the descending process of the detector, the number of variable thrust engines is subdivided into 12 engines, of which 8 engines are distributed in 4 diagonal attitude control engines, and the rest is the bottom. The main engine is now four. The reason for this is that the weight of the Lunar Pathfinder 1 detector is too heavy!
Of course, even if the weight is so large, but with Infinite Gravity Group’s engine technology, two main engines are enough, but if one engine or two engines are used, ~EbookFREE.me~ the probe is landing In the process, if the engine fails, then its landing will fail, which also represents the failure of the launch mission.
Because the super-precision and super-powerful functions of the variable thrust engine can only accurately perform a high-precision variable-speed descent task, if it fails or is used again, some precision parts need to be replaced, but we We all know that there is no way to perform such operations on the moon as far away as 380,000 kilometers.
Therefore, the Deep Space Laboratory team that conducted the first lunar exploration mission deeply understood their boss’s frenzied design of the detector backup system, and designed two backup engines for the main landing engine. The carrying capacity of the "Shen 2" recoverable rocket allows them to have sufficient design margin!
Of course, it does not mean that the design of these two spare engines is completely useless. After all the detection tasks of the probe are completed, they can be used for an experiment. That is the probe on the surface of the moon. Launch test, technical verification for the next detector recovery mission!
　　 After all, just like the national lunar exploration project, the third step of the initial lunar exploration plan of Infinite Gravity Group also involves the recovery operation of the detector, and such technical verification is also required.
At this time, two of the variable thrust engines at the bottom of the screen began to spray blue flames, and the landing procedure began to allow the detector to perform deceleration operations against the predetermined landing site that was explored a long time ago. The eight attitude adjustment engines also began to operate. Point spraying under the control of the program to adjust the attitude of the detector and aiming at the landing point!