"Countdown to 10…8…6… Launch!"

At the launch position of the No. 2, the engine nozzle of the 12-long carrier rocket instantly spewed out a light red flame, and the majestic chemical energy generated thousands of tons of thrust, and the carrier rocket rose into the air.

The cooling water pool at the bottom of the launch tower is full of water, which is instantly evaporated.

On the observation deck.

Tourists and reporters were staring at each other, some cheered and screamed, some were stunned, and some were taking photos.

Huang Xiuyuan in Shanmei also watched the live broadcast through the camera of the multi-leg mecha. At this time, he and Xue Siqiang were in the general control center and could even observe the situation in the space capsule.

Under super acceleration, the astronauts were firmly fixed to the seat of the cockpit, and the pressure of gravity overload made the two of them feel a little distorted.

Captain Nie Changfeng endured the overload and oppressed, stared at the dashboard in front of him, and even pressed his hand to urgently pop out the pull rod.

Due to the increase in payload, the supporting capsule of the long 12-carrier rocket has more design room, so it is equipped with an emergency escape system. Once a failure occurs, the cockpit can be directly ejected.

After the launch vehicle's flight posture is adjusted, after breaking through the black barrier area, it removes the fairing near the Carmen line.

After more than twenty minutes of flight, the core level was separated at 407 kilometers. Then the core level was activated to start the auxiliary nozzle, adjust the flight posture, and then return to the atmosphere by orbiting.

The second-level core carries a material cabin, cockpit, and auxiliary cabin, and flew around the Tiangong Space Station with a 450-kilometer orbit.

The ground general control center, which has experience in multiple launches, controls the core level one to return to the atmosphere, and controls the core level two to the space station.

During this process, the two astronauts also began to act. After passing through the most dangerous atmosphere stage, they needed to restore their physical normalcy as soon as possible and then take over some control.

Time passed minute by minute, and the sun hung high in the sky at noon.

The cloudless Dongfeng Space City is about 38 kilometers eastward, and there is a spacecraft landing area with a radius of 5 kilometers.

The core level with abundant fuel is adjusted to the direction of entering the atmosphere, and then it begins to fly towards the atmosphere. The core level landing method is to land vertically.

The fuel of the engine is mainly used for flight posture control and buffering the landing speed.

In the ground control center.

“Height 8000 meters.”

"The third buffering reverse push."

The core-level main engine spewed flames downward with low power. In an instant, the core-level falling speed suddenly stopped, slowly decreased, and gradually accelerated.

“Height 4000 meters.”

"The fourth buffer reverse push."

The buffering was pushed back 6 times in a row, and the core level finally landed on the ground at a speed of about 3 meters per second. When the bottom of the core level was about 6 meters away from the ground, four landing buffer brackets popped out instantly and steadily stuck on the ground. The flames at the main engine nozzle were extinguished.

The fuel remaining at the core level is instantly injected with a condensation flame retardant. This technology comes from Liu Xin's "coal seam spontaneous combustion treatment technology", which can effectively reduce fuel waste.

Staff stationed near the landing ground came out of the underground bunker and drove towards the core level in a pickup truck.

Although this core level can only be pulled back and disassembled, the materials on it contain a lot of rare elements and the engine needs to be analyzed, so recycling is still very necessary.

Soon the core level was lifted onto a special transport vehicle and transported back to the base.

In low-Earth orbit.

The second level of the core gradually surrounds the orbit. After reaching the 452-kilometer low-Earth orbit, Nie Changfeng and his team member He Zhen began to take over the main control.

With the cooperation of the ground and space station, a synchronous flight was completed with the space station.

“Doing begins.”

After Nie Changfeng finished speaking, he carefully controlled the auxiliary engine and aimed the docking compartment at the docking compartment of the space station.

He Zhen, who was standing by, stared at the data with a serious expression and the three-dimensional stereoscopic simulation layer on the monitor. If the docking fails, he must make timely remedies and quickly separate the spacecraft and the space station.

Various monitoring equipment on the space station and spacecraft always monitors the data of both to ensure that the worst situation does not occur.

After adjusting the orientation of the spacecraft and the space station, Nie Changfeng decisively started docking.

Without any danger, the spacecraft's docking compartment and the space station's docking compartment are steadily connected together.

Then the two docking cavities automatically clamp each other, and four connecting rods extend out of the docking cavities of the space station and insert them into the docking cavities of the spacecraft. The automatic locking system locks the connecting rod.

"Tiangong, Tiangong, this is the Shenzhou, and the docking has been completed."

"Received, now undergo an airtight test."

After a safe docking, it does not mean that everything is going well. Air tightness testing is also required to ensure that the docking area does not leak.

After half an hour of air tightness testing, there was no air leakage at the docking area.

"Shenzhou, Shenzhou, this is the Heavenly Palace. The air tightness test has been passed and the operation is allowed."

"receive."

Huang Shengtian, the stationed astronaut, wore a space suit, opened the two airtight gates of the docking cabin and came to the docking cabin of Shenzhou 9.

The docking cabin was stuffed with various supplies, and he first moved the food and fuel he had supplied to the warehouse of the space station.

Then there are various experimental equipment and spare parts for the new compartment of the space station. Among the supplies transported this time, there are two or three new compartments.

The spare parts of these capsules need to be assembled by astronauts themselves, and this is also the first time that they have tried to assemble a capsule in outer space.

In the past, the space capsules were assembled from the ground and launched into orbit.

The advantage of overall launch is that it does not need to be spliced ​​in space, which reduces a lot of trouble; there are benefits, but naturally there are disadvantages. The overall launch size is bloated, which is not conducive to the increase of load ratio.

Using parts assembly can effectively reduce the volume of the spacecraft.

This time it's just an attempt to see if there are some unpredictable problems in the modular design of the space capsule.

When Huang Shengtian moved out of a passage, Nie Changfeng and He Zhen were finally able to enter the space station from the cockpit.

With the joining of two new forces, everyone soon moved the things to the space station.

The four astronauts began to hand over, Nie Changfeng and He Zhen will replace Huang Shengtian and Chen Zuowen to become the stationed astronauts.

Huang Shengtian and Chen Zuowen, who had been stationed at the space station for 302 days, were preparing to take the Shenzhou No. 9 cockpit and return to the ground that had been away for a long time.

On the third day after the space station and the Shenzhou spacecraft docked, the Ground General Control Center finally sent an order to allow the Shenzhou spacecraft to return to the ground of Blue Star.

The cockpit and auxiliary cabin are the part that returns to the ground this time. The remaining docking cabin, material cabin and core level 2 will be left on the space station.

In the docking cabin, Nie Changfeng, He Zhen, Huang Shengtian and Chen Zuomeng saluted each other, Nie Changfeng said, "Take care, I wish you a smooth return and complete the task successfully."

"The same goes for you. See you again in Dongfeng Space City." Huang Shengtian patted the other party's shoulder.

The airtight gate of the docking compartment slowly closed.

Half an hour later, the Shenzhou spacecraft left the Tiangong Space Station and began to maneuver around the orbit, approaching the atmosphere at a constant speed.

Like the core-level landing method, the Shenzhou spacecraft also lands vertically.

Due to a large amount of surplus fuel, the Shenzhou spacecraft can start to reverse the thrust at a height of 35 kilometers and land at a constant speed, and land little by little towards the landing ground on the ground.
Chapter completed!