Chapter 1607 Moon landing plan

The transfer orbit between Blue Star and the Moon is a large elliptical orbit. After the probe separates from the rocket and enters this orbit, the probe does not need to accelerate itself. As long as it flies along the Earth-Moon transfer orbit, it can reach the vicinity of the perigee. After braking and decelerating near the moon point and entering the orbit around the moon, it can then perform a series of subsequent operations such as descent, ascent, and return.

According to the information provided by Daxia Aerospace Group to Jiuzhou Technology, just to launch the lunar probe, the rocket flight needs to go through 10 flight stages including take-off, booster separation, fairing separation, rocket separation, and rocket separation... .

Not only that, from the rocket ignition to the separation from the detector, the rocket also needs to perform more than 70 sequential steps and actions. Each action involves a number of key products and key parameters, such as control instructions, unlocking devices, etc. .

It is precisely because there are too many key products and parameters involved that when Jiuzhou Technology proposed to establish the Lunar Development Science and Technology Association, many people within the Daxia Aerospace Group felt that Jiuzhou Technology was a bit "arrogant".

After all, although everyone admits that Jiuzhou Technology is very powerful in the field of technology manufacturing, in the field of aerospace, Jiuzhou Technology is still too "young". With the aerospace technology and data mastered within the Daxia Aerospace Group, as long as they are willing, they can immediately The Lunar Development Science and Technology Association has gained a very high voice.

It's just that this technical association has not yet generated any revenue or value, so everyone regards it as a project docking organization established by Jiuzhou Technology itself.

However, one thing that makes all the aerospace personnel of Jiuzhou Technology feel heart-warming is that among the data that Daxia Aerospace Group half donated and half cooperated with, although some of them did not give specific data due to confidentiality rights, as long as the specific data is given There was no fraud in any of the projects, and no traps were deliberately set in them.

Perhaps because the engineers of Polar Bear had similar misdeeds in the past, when communicating, the older engineers of Daxia Aerospace Group would also say in a serious tone: "If you don't understand anything, as long as it doesn't violate the relevant regulations, , just take the initiative to ask us. We are all one family, don’t talk about two families.”

It is in this atmosphere of sincere cooperation that Kyushu Technology's aerospace projects can make such rapid progress. Otherwise, every time there is an important project, various detections and data collection are required, which not only wastes time, but also wastes a lot of manpower and material resources. .

When Zhang Tianhao, Zhan Kunhu, Zhang Panyang, Li Jian and others learned of Gu Qing's arrival, they did not restrain their discussions like the technical staff of other companies, but continued to interact as before. However, during the interaction, From time to time, they would raise issues to their own bosses, instead of going around in circles like before.

"If we use the direct lunar landing method, then we need the rocket thrust to be powerful enough and to have precise enough control capabilities. After all, after the aircraft flies to the moon driven by the rocket, it must use the landing legs once it enters the lunar orbit. The braking rocket between them can make a soft landing on the moon.

The advantage of this solution is that the flight process is simple enough. But it requires a launch vehicle with enough thrust.

If it is a five-stage rocket, the high-thrust stage will have thousands of tons of thrust, and the other stages will also need hundreds of tons of thrust. But we must solve the control system, as well as the inherent safety issues and equipment reliability issues of the five-stage rocket model. After all, manned moon landing is different from probe moon landing. If something goes wrong during the launch process, the astronauts will be able to survive. The probability is extremely low. "

"The more sophisticated and complex technological products are, the more likely they are to malfunction. This is inevitable. But if we do not use multi-stage rockets, then the rocket thrust cannot be accurately controlled. And if we want to launch directly from Blue Star to the moon , the rocket's drug load must exceed that of ordinary space launch vehicles. The JZ-404 rocket and its improved rockets are optimized versions of a certain Long March model. Its drug load may be able to support up to 7% of the total round trip mileage. About ten, and the remaining thirty percent, do we need to add another level?"

"No, the JZ-404's engine is not good enough. It carries a lot of medicine and is prone to various minor problems over a long journey. The reason is that although the energy source and engine are advanced enough, they are not enough to support landing. Monthly round trip.”

"This doesn't work, that doesn't work, then what should we do? Calculate the orbit? NASA does have ideas in this regard. Our Blue Star is a full 384,000 kilometers away from the moon. Even if we have the help of the Zhoutian Star Project, the ground and There will certainly still be a time delay in communications from the moon.

NASA proposed to use several launch vehicles to send the spacecraft and the escape rocket loaded with propellant into low-Earth orbit respectively, dock them in low-Earth orbit, and then the docked lunar landing assembly would fly to the moon.

But this also faces a problem, they do not have suitable rockets to use. "

"Not to mention NASA's bad luck. They can't even build a space station. The most we can do is look at their research direction. It's impossible to really follow their ideas. After all, according to the level of technical reserves, in a sense We have already surpassed NASA, and some of the equipment is completely incomparable."

"Old Li, what you said makes sense. I think of our former classmates who worked for NASA. A while ago, they wanted to use my channel to find our company to explore the possibility of cooperation in launching spacecraft.

But they were all rejected by me. They don't have a mature high-tech manufacturing industry now. They just listen to the theory. If they really want to do it, they might as well cooperate with our Jiuzhou Aerospace Group. "

Gu Qing was not surprised when he heard this little information. After all, it is impossible for people to change their diversity because of their profession.

He knew that academia and finance also had similar circles of relationships and channels.

But after listening to several plans, the atmosphere in the conference room suddenly cooled down.

After a relatively young engineer saw that his teacher, several junior uncles, and several senior executives of the company had all stopped, he mustered up the courage to say: "Why don't we wait for the breakthrough of the rocket branch's project? After all, No matter how many plans we design, we still have to make changes based on the specific conditions of the rocket and lunar lander."

But when he finished speaking, an engineer immediately retorted: "If we don't make a plan in advance and wait until then to design, we will waste a lot of time and resources!"