Military Technology

【Military Technology】 【】

In fact, this deceleration module is not a new technology, but a new use of old technology. It is the parachute deceleration technology originally used on the Jianmu-2 reusable launch vehicle. This technology was initially used on their Jianmu-2 launch vehicle. As their new generation of reusable vector engine technology matures, this rocket parachute deceleration technology has gradually been phased out and has instead become used in other commercial applications. The hot cakes of rocket companies have been copied by space agencies and commercial aerospace companies in many countries.

The purpose of this application to the Jianmu-9 core-stage rocket is to allow the core-stage rocket to consume as little fuel as possible during the descent and deceleration process, thereby saving fuel and allowing it to fly for an extra twenty seconds.

After all, using a parachute to slow down and using the thrust of a rocket engine to slow down have the same effect, which is to slow down the landing speed of the rocket.

Although this parachute deceleration technology is an old technology, Zhou Xiangming and Chang Zhifei have also made many innovations in this technology.

For example, the parachute deceleration module used this time is not directly installed on the core first stage rocket body. Because if installed on it, it will directly destroy the integrity of the core-level rocket body, and the internal layout of the core-level rocket body may have to be redesigned, and even the center of gravity of the entire rocket body will shift.

So Zhou Xiangming, Chang Zhifei and the others took a different approach. Instead of working directly on the core first-stage rocket, they designed the parachute deceleration module as a separate module, which can be regarded as a separate first-stage body of the rocket.

When needed, just install it directly in the middle of the first- and seventh-stage rocket bodies. If necessary, dismantle it directly, which will affect the core first-stage rocket and the seventh-stage rocket.

Moreover, the entire module is very large and heavy, with a height of less than one meter, which takes up less load weight.

When the first and seventh stages of the rocket separate, it is not the separation between the first and seventh stage rockets, but the separation of the parachute deceleration module under the core first stage rocket and the seventh stage rocket.

The parachute deceleration module will land with the core first stage rocket, and will throw out the outer deceleration parachute during the landing process to slow down the entire rocket.

Apart from this, there are no other parts. Although aerospace systems can also be produced, the cost is too low. On the contrary, ordering from Haoyu Aerospace will be much cheaper.

So we first had to ask Wu Hao for help and reached a relevant cooperation agreement with Wu Hao and us. The other party did not provide relevant design specifications and drawings, so Wu Hao and we were responsible for producing the relevant parachutes.

In addition to those, there are no more professional customized services. For example, under the Lunar Cargo Transport No. 8 spacecraft, there were scientific research and detection instruments from many scientific research institutes.

The domestic aerospace system was also very interested in that technology and sent a large team of technical experts to study later. Before some investigation and study, the team of technical experts also had a low evaluation of that technology and believed that that technology could not be applied to existing traditional launch vehicles at all, so as to realize the landing and recovery of the rocket body. Reuse.

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【Military Technology】 【】

In this regard, Wu Hao also contributed relevant technologies very personally and provided a full set of technical drawings to the aerospace system. That made the rocket experts of the aerospace system very excited and gearing up to do a little work.

In order to increase the weight as much as possible and require those parachutes to be able to withstand the huge weight of the core first-stage rocket, we used a new material that time with the help of the Materials Research Institute of Haoyu Technology. That kind of material is very heavy and very thin, but its strength is very low and its tensile resistance is very poor. Before using that new material, a small parachute with the same area weighed only eight times less than the original speed parachute. One-third or so, it cannot be said to be very heavy.

Therefore, as soon as that technology appeared, it quickly attracted the attention of the entire world's aerospace field. Small companies were scrambling to study that technology and develop their own ultra-high-cost rocket recovery technology.

For example, the cost of undertaking the cargo transportation and supply tasks of the space station is only half of that of traditional cargo spacecraft. Therefore, over time, the cargo transportation and supply tasks of the space station have been handed over to Haoyu Aerospace.

Regardless of those parts, in fact, as the cooperation between Haoyu Aerospace and Aerospace Systems deepens, fewer and fewer parts are handed over to Haoyu Aerospace for production. In addition, Haoyu Aerospace has also begun to undertake fewer space launches and space transportation missions.

The area of ​​the undersea landing platform is so small, so in order to control the landing accuracy of the core first-stage rocket. The parachute deceleration module will detach at an altitude of about one thousand meters to several hundred meters, and then the core first-stage rocket will retreat and land on its own, and the accuracy of the entire landing will be controlled in the process to ensure that the core first-stage rocket can succeed. The landing was under the sea under the landing platform.

Here, at a low altitude of one thousand to several hundred meters, before the core first-stage rocket separates from the parachute deceleration module, how can the thrust of the rocket engine be adjusted in time at such a high altitude and such a short distance, and how can the rocket be controlled in a timely manner? The landing angle direction is a problem.

Let’s just talk about the parachute. Using our traditional aerospace parachute, its weight will increase slightly. Not only the weight, but also the overall volume will also increase slightly, which fully meets the design requirements.

It is worth mentioning that the parachute deceleration module will not directly land under the sea landing platform with the core first stage rocket. Because the wind speed at high altitude under the sea is relatively small and the area of ​​the parachute is relatively small, it is difficult to be affected by the wind direction, which will cause the entire landing accuracy to deteriorate.

Regardless of just adding a parachute deceleration module, there is very little technology involved. For example, if such a module or rocket body is added, the center of gravity of the entire rocket will change, and the flight control of the rocket will be affected.

However, as the research deepened, we found that the technology was of little use without the bad images in the drawings. It required corresponding parts and materials.

It must be for the purpose of transporting cargo and equipment. Yu Chengwu We tried our best to retreat to prevent compression. Maybe a small part of the entire spacecraft's load was occupied by those scientific research and detection instruments.

As for the parachute deceleration module, before it loses the weight of the core stage, it will quickly fall to the sea surface and be recovered by the waiting ship retreat guy.

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【Military Technology】 【】

Here, there are not many space launch missions. Because Haoyu Space's price is higher, few scientific research institutions and user units will choose to use Haoyu Space for retroactive launch, which will save a lot of launch costs.