Vol 2 Chapter 901: Moon landing

This is the "Xuantu". The preparations for landing on the moon are completed, and we will officially start landing on the moon when we arrive at the departure position in the next round!
  'Gaia' command center, please confirm whether the moon landing procedure is normal! "As the commander of this mission to the moon, Tong Huamin started to confirm with the earth the last time after the system self-check was successfully completed.
  At this time, there was a busy scene in the command center of the ‘Gaia’ base. At this last moment, it would be strange if they were not nervous at this moment!
Even the various detectors that have been launched to the moon many times before have repeatedly verified the reliability of manned spacecraft to land on the moon, but the mentality when there is no astronaut is the same as when there are real astronauts and spacecraft landing together. The mentality is completely different, let alone the boss is still on it!
   "No. 2, is the moon landing procedure normal?" Zhao Feiyang, the commander of the moon landing project, rang in the control center.
   "Report No. 1! There is no problem with manual inspection, and the origin re-inspection has passed smoothly, and the moon landing can be carried out!" The No. 2 station responsible for the program inspection reported loudly.
Hearing this answer, Zhao Feiyang nodded in satisfaction, connected to the'Xuantu' lunar space station, and said in a certain tone: "This is the'Gaia' command center! The ground manual recheck is all normal, and the origin recheck is normal. The moon landing program can perform moon landing operations!"
After hearing this reply, Tong Huamin issued a command to execute the moon landing command in a firm tone. Lei Tiantang, who had entered the command module of the moon landing spacecraft, and the other three astronauts also confirmed all normal responses. The most critical node of the mission has arrived!
The atmosphere on their side is actually the most relaxed, because the entire moon landing procedure is completely controlled by a set intelligent program when there is no abnormal situation, so what they can do before landing on the moon Rarely.
It is not a simple matter to operate the 102-ton Houyi moon landing spacecraft assembly to accurately land on the predetermined landing platform. This complicated and delicate operation is left to the reaction speed. The microsecond intelligent program can be controlled well.
Under normal circumstances, it is almost impossible for such a heavy guy to want a safe soft landing on the lunar surface, because if the lunar surface is not strengthened by treatment, such a heavy spacecraft will land on the ground even if its operating procedures are well controlled. Later, it will sink into the moon's surface, because the moon's surface is as soft as the earth's soil.
Although the structure and physical and mechanical properties of the lunar soil layer on the surface of the moon are hard, there is no need to worry that the astronauts on the moon will sink into the lunar soil, but this does not mean that it can bear such a heavy guy with 6 supporting legs To support it.
Once the spacecraft assembly sinks after it has landed, there are more uncertainties. Therefore, for the safety of astronauts, in the early construction process, apart from building a large number of solar panel arrays on the lunar surface outside the base In addition, a platform on which large-tonnage spacecraft can land is deliberately built in the main landing area of ​​the spacecraft.
  However, because building materials are so precious, this landing platform only uses mechanical equipment to beat and compact this area. More professional platforms can only be built when resources are sufficient in the future.
  And now, in the eyes of the earth's billions of people, the "Houyi" moon landing spacecraft assembly successfully separated from the "Xuantu" space station at the predetermined orbital position, and officially began the journey to the moon!
  The first thing that started to work was the direction adjustment auxiliary engine. Under the control of the program, they accurately adjusted the orbit and direction of the spacecraft assembly and started flying along the planned landing curve.
At a height of 6,800 meters from the lunar surface, the main reduction engine successfully ignited. Under its huge reverse thrust, the descending speed of the combination began to decrease rapidly. The direction adjustment auxiliary engine also kept fine-tuning the position of the combination. Aim this behemoth precisely at the landing platform.
Fortunately, this process of landing on the moon has been verified for 7 successful landings, and three times have successfully simulated manned landings. If you add in the previous launch of various lunar probes and various forward bases The number of landings of construction materials has increased to 22!
So many successful landings have allowed Infinite Gravity Group to accumulate a wealth of experience in landing on the moon. Therefore, at this time, whether it is the Earth Control Center or the "Xuantu" space station, the people at most are a little nervous, but more. Emotion is expectation!
At 300 meters from the lunar surface, the speed of the entire assembly has dropped to a descent speed of 10 meters per second, and this speed is still rapidly decreasing. When the assembly is 100 meters away from the lunar surface, the speed has dropped to that point. At 6 meters per second, the descending speed is now safe to land.
  At this point, everyone's mood is relaxed, because even if the distance and descent speed are wrong, the safety of the astronauts in the spacecraft will not be affected.
Lei Tiantang’s attention at this time has changed from observing various landing data to watching the final landing process of the spacecraft combination through the ultra-clear camera outside the spacecraft with people watching live broadcasts on Earth, because at this time it is really true. Nothing needs them to do.
Of course, the main reduction engine did not stop working at this time, but continued to provide reverse thrust for the entire assembly, until the spacecraft assembly was only 5 meters away from the moon surface ~EbookFREE.me~ it began to reduce its thrust. At this time, the descent speed of the spacecraft assembly has been reduced to 05 meters per second.
After Lei Tiantang and the three astronauts felt a slight shock, the landing process of the entire spacecraft assembly was completed smoothly. Everyone who watched the entire landing process was excited to celebrate, because the mission can be here. Said it is a complete success!
Of course, it’s still a little bit worse now, because it’s been said that this time the moon landing spacecraft is a combination. In the weight of 102 tons, the combined weight of the command cabin and the return cabin is only 25 tons, and the remaining weight is all Construction of materials and scientific research equipment used in the forward base.
Now the entire assembly has indeed landed safely on the moon, but because the landing method of the entire assembly is the safest vertical landing mode, the distance between the command module where Lei Tiantang and the three astronauts are located is still far from the moon surface. It is 8 meters high.
  From here to the surface of the moon, they have to go down through the ladder. Even if the gravity of the moon is only one-sixth of that of the earth, if the distance between the two floors is a little higher, it is still a little dangerous.
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