Military Technology

Compared with land landing sites, sea-based landing sites have greater technical difficulties or the difficulty of rocket return and landing.

First of all, the sea-based landing site is floating, and it will sway up and down with the ups and downs of ocean waves. In addition to the impact of waves, tides, sea winds, and even the deflection force of the earth will also have an impact on him.

This also means that this ocean landing site or ocean landing platform must have very strong resistance to wind and waves. In addition, it must have a precise platform positioning system.

In other words, it must overcome various influences caused by the ocean and weather, and keep the platform stable and at one point. Only in this way can the descending rocket land accurately on the platform.

This is just a static sea landing site. There is a more difficult one. The entire sea-based landing platform will sail forward at a constant speed and maintain a corresponding traveling speed, and then accurately receive the core first-stage rocket returning from the sky. This requires that the coordination between the entire sea-based landing platform and the core first-stage rocket must be accurate. Only in this way can the two be seamlessly connected. A slight mistake can lead to a complete failure of the entire recovery landing, and may even lead to a serious accident.

As for Wu Hao's marine rocket landing platform, it was actually welded and transformed from two barges. Two barges were welded together with a very large landing platform. The materials used on the platform are the same as those used on the aircraft carrier deck, and their strength is even higher than that of the aircraft carrier deck.

In addition, a fire sprinkler system is installed on this landing platform, which will spray fresh water to wash and cool the entire deck. It will also spray dry powder and foam when necessary to quickly extinguish fires.

There is a power system installed under the broken ship. This power system will be able to support this large ocean landing platform to move forward at a speed of 5 to 8 knots per hour, and can maintain the stability of the platform during travel. This twin-jointed hull itself has extremely strong wind and wave resistance and stability. Coupled with the 360-degree free multi-position propulsion system and Sichuan Shen’s intelligent autonomous control system, it can control the entire ocean landing platform to sail autonomously, and can Position it accurately above the ocean to ensure that it will not drift and shift with the waves, currents, and winds.

When this ocean landing platform performs its mission, there are no personnel on the entire platform, and everything is controlled independently by the platform's own intelligent control system. It will predict and make adaptive adjustments based on the landing position of the rocket. That is to say, when the first stage of the rocket core lands, it is actually linked to the landing platform. In this way, the landing can be greatly improved. The landing was successful.

But even so, there is still no guarantee that every landing will be successful. This is impossible and unscientific. No one can guarantee that such a mission will be successful. There are tens of thousands of links and problems with one of the hundreds of thousands of parts, which will cause the entire rocket launch mission or the recovery and landing mission to fail.

Now, this ocean rocket landing platform has completed all environmental testing before setting off, and is ready to lift anchor and leave the port, heading to the predetermined sea area.

After arriving at the scheduled time, on the one hand, it will start preparations for the landing of the Jianmu-7 core first-stage rocket, and on the other hand, it will also conduct various tests. After all, this is also the first time this ocean rocket landing platform has performed a landing mission, so it needs to be tested several times in advance and try its best to ensure that nothing goes wrong.

At the same time, the Jianmu-7 rocket carrying the intelligent lunar surface patrol and exploration vehicle assembly began to slowly move to the launch tower surrounded by people.

The entire transfer process is very slow. It should be said that this is the largest vertical transfer device in the world, and the railway below is also the fastest railway in the world.

Slowly, after several hours of vertical transfer, the Jianmu-7 rocket was finally transferred to the launch tower, and then the huge components of the launch tower that had been opened began to re-wrap the rocket inside.

This is the final preparation stage before launch. The launch site, rocket development unit, and payload development unit must use this last time to begin comprehensive testing and verification of the launch system, rocket system, payload system, and payload rocket system to ensure nothing goes wrong. .

After all the tests are completed and everything is ensured, fueling the rocket will begin. The Jianmu-7 rocket still uses the semi-solid foam propulsion fuel developed by Wu Hao and others. However, compared with the original recommended fuel, the second-generation semi-solid foam propulsion fuel has higher performance. To put it bluntly, it is energy. The higher the density, the greater the thrust generated.

The filling of this semi-solid foamed propulsion fuel is actually similar to the filling of kerosene. It actually appears as a more viscous oil before filling. This semi-solid foaming state can only be produced when it is added to the rocket and reacts with another catalyst. This semi-solid foaming state allows the rocket to be filled with more fuel, thus producing more fuel. Big, longer lasting thrust.

After the fueling is completed, the comprehensive pre-launch drill process will begin. Under normal circumstances, the drill needs to be repeated several times until all the work is ready and the wait for the launch time comes.

Generally speaking, no one knows what the result will be until the last minute. The launch site determines whether the rocket will be launched on time, because no one knows whether the rocket can be launched on time until the last second before launch.

If there is any problem with the rocket or launch system and payload system, the launch process will be terminated immediately. Various troubleshooting work will be carried out immediately. If there are some minor faults, it may be delayed by an hour or two.

If the failure is relatively large, the rocket may officially terminate the launch, the rocket will begin to extract fuel, and then the main rocket will be re-transported to the factory for inspection. This process is very complex and time-consuming. Therefore, this situation is also a situation that all rocket system technicians, launch site systems, and payload systems do not want to see.

Of course, there is another situation that no one wants to see, and that is danger. Especially the ten seconds after launch are very critical. If something goes wrong during this process, the impact will undoubtedly be huge.

There have been several such accidents before. The rocket malfunctioned seconds after launch, resulting in serious accidents and the death of many people.