Chapter Two Thousand Five Hundred and Twenty One Questions and Answers
"After this Space Express is launched, it will fly between the Earth and the Moon.
First, it will fly around the earth in a low-Earth orbit of 400 to 600 kilometers, thereby waiting for the module thruster, cargo spacecraft, or manned spacecraft launched from the earth to dock. After the docking is completed, there will be modules
The thrusters are used to accelerate the orbit change and push the Space Express from its original low-Earth orbit to the lunar transfer orbit.
Then it will enter the lunar orbit four days later and fly around the moon. During this process, it will continuously lower the altitude of the lunar orbit and release the lunar lander according to procedures.
After the lunar lander breaks away, it will start the lunar landing procedure and land at our lunar scientific research station in Zhihai.
During this process, the Space Express will continue to fly along the lunar orbit, waiting for the lunar lander to take off. Of course, this can be one or two ships used alternately, which will greatly reduce the space
Express circumlunar flight time.
After the lunar lander arrives in orbit and docks with Space Express, Space Express will immediately change its orbit and enter the Earth transfer orbit.
After three days of lunar transfer orbit flight, Space Express will enter the Earth's orbit and begin orbiting. And according to procedures, the manned spacecraft will be released.
After the manned spacecraft breaks away from the Space Express, it will start flying along a predetermined orbit, conduct analysis, return to the manned atmosphere of the capsule, and then land on the earth."
Speaking of this, Guo Yulong smiled at Wu Hao and everyone and said: "This solution saves costs to the greatest extent, allowing most of the system unit modules in the entire lunar landing process to be reused multiple times, and the transportation of a single person
The cost may be one-twentieth or even more than the cost of other conventional lunar round-trip plans."
I have a few questions. At this time, Yang Fan, who was sitting next to Zou Xiaodong, asked. As the company's CTO and a shareholder of the company, he naturally attended this meeting and supervised the entire technical part of the entire project, so he naturally wanted to
Ask questions about some issues.
This is both a warning and a help. Many things cannot be seen clearly by oneself because one is stuck in the blindness. On the other hand, bystanders can clearly and rationally see these problems from the outside and provide guidance.
Seeing Yang Fan speak, Guo Yulong, Yu Chengwu, Zhou Xiangming and others all looked at him, waiting for his questions seriously.
First of all, have you tested this solution in the field? Is it really technically feasible? Yang Fan looked at Guo Yulong and Yu Chengwu and asked seriously: "So far, I have not seen any relevant technical verification tests of yours.
So far, what we have heard are some of your self-justifications without sufficient experimental data support.
The Space Express plan was proposed by us, and we have also given you a lot of plan and technical support, but this does not mean that you can just sit back and enjoy the benefits.
Not to mention anything else, let’s just say that the Space Express frequently travels between the Earth and the Moon, and frequently changes orbits in the orbits of the Moon and the Earth. How much fuel does this consume, and whether the various systems on the Space Express can support such frequent movements.
In addition, does the entire Space Express have backup systems and emergency response systems? Also, the most important part of the entire plan, how to design the lunar lander, what do you think about these?
You must know that this lunar lander needs to frequently land on the moon, and lift off and dock. In the conventional plan, the lunar lander is divided into two modules, one is the lunar lander, and the other is the ascent crew module
When the passengers on the moon need to return, they only need to ascend the crew module and return, and the huge lunar lander will be abandoned on the moon.
This seems like a waste, but in fact it is for a huge weight reduction, but the ascender can successfully lift off from the moon and enter orbit for docking.
As for your lunar lander plan, I haven’t seen it yet.”
Hearing Yang Fan pointed out so many problems in succession, everyone in Haoyu Aerospace looked a little ugly. But no matter how ugly it was, they had to bear it, because Yang Fan was not only their leader but also a shareholder of Haoyu Technology, who decided the life or death of this project.
Mr. Yang, I'm very sorry. This is indeed an oversight in our work. It was Yu Chengwu who spoke, and he looked at Yang Fan with a guilty look on his face and said: "We will also answer the questions you raised in detail below."
After saying that, Yu Chengwu looked at Zhou Xiangming. Seeing this, Zhou Xiangming knew that it was his turn to appear at this time. Although Zhou Xiangming is the person in charge of the entire Space Express project, Zhou Xiangming is the overall person in charge of the entire Lunar Science Exploration Station and its affiliated projects.
So at this moment, he must stand up and admit his mistakes and answer these questions head-on.
"Yes, this is because our work was not done properly. We will conduct a thorough review after we return."
Zhou Xiangming first admitted his mistake, then opened his transparent folding device, and then slid the transparent folding screen to introduce it to everyone.
"First of all, we are not doing nothing and directly launching Space Express when the time comes. That is not the case. In fact, we have planned an experimental spacecraft that will be launched in the fall and winter of this year. Its main function is to verify the entire Space Express project.
The feasibility of the technology and carry out relevant space experiments. In the future, the relevant experimental results and related technologies of this experimental spacecraft will also be applied to our Space Express.
We have adopted a modular design for the entire Space Express, which also means that each part of it can be replaced and updated. This not only facilitates timely handling of various emergencies during future operations, but also facilitates the handling of these parts.
Maintenance and updates.
In addition, considering that the entire Space Express needs to make frequent trips to the Earth-Moon orbit and operate for a long time, we designed two identical systems for the spacecraft. The two systems are not related to each other, but they are mutually reinforcing.
Backup. When one system fails, it will automatically switch to the other system.
These two systems are not only at the software system level, but will also be extended to hardware systems. For example, the spacecraft's main engine, attitude engine, spacecraft's life support system, etc.
In this way, the safety of the entire Space Express during navigation can be greatly ensured.
In addition, we have designed emergency evacuation procedures for Space Express. When Space Express breaks down at any stage of the Earth-Moon orbit, and neither the system nor humans can deal with it and eliminate it in time, astronauts only need to confirm it.
Or if it is confirmed by the ground, the Space Express will automatically switch to emergency mode, and on the premise of ensuring the safety of the cabin crew members, start returning according to the predetermined procedure and return the cabin crew members to the earth."
