At the altitude of 10 kilometers, the spacecraft was damaged because the low gravity main engine was only started for more than ten seconds during the landing period, which was only to facilitate the dynamic braking to avoid landing too fast.
Nie Changfeng and Shi Keji have set the landing procedure of the spacecraft, but they are still staring at the dashboard and ready for manual intervention.
Fortunately, everything was thrilling. Finally, when there were 3 kilometers left near the landing site, the main engine spewed a weak reddish flame, which reduced the deceleration to 1 meter per second and gradually descended.
It is less than 1 meter near the ground, and the descending speed of Queqiao No.2 is less than 3 meters per second.
The dust on the ground is impacted by the particles ejected by the engine, which gradually increases and spreads in all directions.
This landing area was carefully selected by them, which is one of the reasons why they have been in lunar orbit for almost half a month but have been slow to land.
After all, sharpening the knife is not a mistake. Woodcutters have been exploring suitable landing areas for more than half a month.
If it is a small lander, the geological requirements are not high, and the moon and the sea can be flat, but the weight of Queqiao II is alarmingly high.
The weight of Queqiao II is 34 tons, plus about 21 tons of surplus fuel, while the weight of each cabin in Guanghan Palace Base is 55 tons.
When the combined weight of the department reaches about 11 tons, the geological conditions of the landing area must be considered when vertical landing is adopted.
If the sand layer is too thick and loose, it is not suitable for this landing scheme. In case the sand layer cannot support the weight of Queqiao No.2 and directly sinks or tilts, it is definitely a big accident.
The monthly sand layer on the ground in Yuhai Hongwan area is about 3~4 cm thick, and the surface is hard basalt layer and very flat.
When the engine nozzle is close to the ground less than three meters, a support immediately pops up and is firmly inserted into the sandy soil layer on the ground, and is finally blocked by the basalt layer.
[Automatic Balance System Start]
The supports adjust the hull of Queqiao No.2 according to their respective heights to ensure that the hull is vertical to the ground.
In fact, at this time, Queqiao No.2 has been rebuilt in Tiangong. It is no longer the "I" type of rocket transport, but the tail is transformed into five cabins in parallel.
[Landing completed]
Nie Changfeng and Shi Keji checked the various systems of a spaceship and found that everything was normal before they breathed a little sigh of relief.
But it’s not over yet
Nie Changfeng pressed the separation button and then Shi Keji started the separation of Queqiao No.2 and the five cabins at the tail, which rose by about 1 km.
They are allowed to do this only when there is a lot of fuel surplus after adjusting their flight attitude according to the set procedures and landing again.
Finally, Queqiao No.2 landed steadily about 6 meters southeast of Guanghan Palace base.
As the weight has been reduced by more than half, this landing is more stable.
It is inconvenient to reduce the foundation pressure of Guanghan Palace base and to show the surface of Guanghan Palace base again. It is also inconvenient to hang Queqiao No.2.
After two successful landings, their landing images were also sent back to Blue Star.
Suddenly, the network of the country was full of laughter.
In foreign countries, the internet is divided into three groups: the indifferent neutral group, who can’t eat grapes, says that the jealous group congratulates and envies the friendly group.
The moon side naturally didn’t pay attention to the strange remarks about Bluestar Internet.
Nie Changfeng felt the long-lost weight when he lifted his seat belt in Queqiao No.2 cockpit. Although this weight seems a little weak, this down-to-earth feeling will make human beings feel a sense of innate security.
At this time, it is not time to leave the cabin, because there is a lot of dust outside, which is the moon dust picked up during the landing.
The moon has no visible atmosphere and no flowing water and sand erosion.
For thousands of years, the dust here has remained in a very original state. They seem to have been polished without passing by, and obviously the edges and corners are extremely sharp.
If you accidentally inhale these lunar dust, it is easy to damage the equipment.
However, it takes a few days less when the moon dust falls to the ground in low gravity environment.
The two men control the Guanghan Palace base through the magnetic wave communication system, so that the normal operation of the base can be maintained even if the nuclear pool of Guanghan Palace base does not exhibit solar panels.
Because of the weak gravity in the cockpit, the two people have to be vigilant. For example, if they enter the surface life cabin, they must hold the bulkhead handle.
Lonely moon, they must be as careful as possible to ensure that they are not injured or sick, otherwise this time will be over before.