Chapter 2932 Gold Meteorite Core Transport Plan (C)
【Corrected version】
"Having said this, Yu Chengwu continued to change pictures and said: "To be honest, how to fix such a large and heavy gold meteorite core on the ascender is also a huge problem.
"Because it will directly change the center of gravity of the entire ascender structure, which will cause the angle of the ascender to change during the entire launch and ascent process, leading to the failure of the entire takeoff and ascent. Originally, its best fixed position should be at the top of the ascender.
It needs to be fixed to avoid the problem of center deviation, so as to smoothly rise and dock with the orbiter on the track.
"However, the top of the ascender is usually a docking port to facilitate docking with the orbiting spacecraft in orbit. If it is placed at the top, the docking port will be blocked. How to dock with the orbiter?
"It won't work if you put it underneath, because the bottom of the ascender is the rocket nozzle, and such a large gold meteorite core cannot be placed, otherwise it will easily block the rocket engine nozzle and affect take-off.
"As for the surrounding areas, it will not work, because this will seriously affect the center of gravity of the entire ascender. Even if the moon's gravity is very small, it will affect the stability of the ascender during the entire launch process, causing the ascent to fail.
"So it can only be placed above or below, which requires the entire ascender to be modified to meet our transportation needs.
"After studying multiple options, we believe that the best option is to place the gold meteorite core under the ascender, while the rocket engine is moved to the side."
"You can see in the picture the structure of the entire ascender, which is basically similar to the structure of the lander of the lunar cargo transfer spacecraft. The rocket engine is not placed at the bottom, but placed around it, like outstretched arms.
"In this way, a huge space is formed between the landing racks below the ascender. This space can be used to fix the cube frame containing the gold meteorite core to form a whole.
“We have set up a lot of holes on the landing frame, which can correspond to the holes on the gold meteorite core cube frame, and are fixed with bolts.
"In this way, the entire gold meteorite core can be firmly fixed on the ascender without displacement or falling off. In this way, we can use the ascender to transport the gold meteorite core to the orbit around the moon.
, and then dock with the orbiter in orbit around the moon and return to the earth together."
"You mean to return to Earth together with the ascender?" Yang Fan interrupted Yu Chengwu and questioned.
Yang Fan's doubts are not unreasonable. Normally, in order to reduce weight, after the ascender docks with the orbiting spacecraft, the cargo is transferred to the interior of the spacecraft. The ascender loses value and can break away and crash on the moon. The orbiting spacecraft only needs
These goods need to be transported back to Earth.
You must know that the entire ascender has weight. The greater the weight, the greater the thrust required, so more fuel is required, thereby increasing the cost of the entire project.
Therefore, under normal circumstances, all lunar exploration and return missions basically abandon the ascender.
Facing Yang Fan's question, Yu Chengwu nodded and replied: "Yes, we plan to return to Earth together with the ascender.
Although the ascender has a certain mass, fortunately, the moon's gravity is relatively weak, while the earth's gravity is relatively strong. Therefore, the entire return process does not require much thrust or consume too much fuel.
In addition, we have installed several small rocket engines on the opposite side of the engine nozzle of the ascender. After docking, these rocket engines can still provide additional thrust for the entire spacecraft assembly, which can completely compensate for the weight of the ascender."
"Hearing Yu Chengwu's answer, Wu Hao nodded slightly, then raised his hand and said: "Continue."
Seeing Wu Hao's approval, Yu Chengwu's morale immediately increased and he continued to speak at a higher volume: "After docking with the spacecraft, the robotic arm in the spacecraft's return cabin will automatically grab the lunar soil samples in the ascender cabin and store them in the spacecraft's return cabin.
Inside.
After arriving in Earth orbit, the spacecraft and ascender combination will gradually enter the landing orbit. First, the spacecraft will separate from the lander, and then the spacecraft's return capsule will take the lunar soil samples and land on our preset landing site according to the prescribed orbit.
Landing.
The ascender uses the remaining fuel to transport the gold meteorite core to the predetermined landing orbit, and then separates from the gold meteorite core."
"Are we going to let it fall down directly?" Zhang Jun opened his mouth and asked Yu Chengwu. He did not expect that the transportation process would be so simple and direct, even a little rough.
Let’s not talk about whether it will explode when it hits the ground and form a crater. Let’s just say that such a large meteorite hits directly without slowing down. I’m afraid everyone will feel scared.
The power of a ton of meteorite hitting it directly is probably no less than that of a missile.
Yu Chengwu shook his head and said with a smile: "No, what was separated from the golden meteorite core was actually a special parachute bag, which has been hidden at the bottom of the ascender.
When the outer cube frame of the golden meteorite core is fixed to the bottom of the ascender, it is also fixed to the parachute bag. In this way, the golden meteorite core can land with the parachute bag.
Because it is a gold meteorite star core, as long as it is not damaged, it will be faster. Therefore, we can control the size and weight of the deceleration parachute within a lighter range, reduce the load weight, and reduce the launch cost.
The parachute bag is opened during the landing process in the atmosphere, and the deceleration parachute is released to slow down the golden meteorite core and prevent it from falling too fast. In this way, the golden meteorite core will land at our preset speed at a more reasonable speed
By landing on the field, we can obtain this golden meteorite core on Earth."
After hearing Yu Chengwu's introduction, everyone present couldn't help but nodded. This plan indeed seems to be the most realistic and feasible, able to make full use of existing resources and control costs within a reasonable range.
Where do you plan to land this golden meteorite core? Wu Hao asked immediately after listening to Yu Chengwu's introduction.
Upon hearing Wu Hao's inquiry, Yu Chengwu immediately replied: "It has not been determined yet, but there are three alternatives, namely the hinterland of the Taklimakan Desert, near our land landing site on the plateau, and the Dongfeng Landing Site of the aerospace system.
The best choice is the Dongfeng landing site, but considering the uncertainties in the landing process of the gold meteorite core, we need to communicate and negotiate with the aerospace system."
Wu Hao looked at Zhang Jun, Yang Fan and others nodding, and smiled and said: "It seems that you are well prepared."
Yu Chengwu smiled and asked: "Haha, I don't dare to mention this to you if I don't have enough. What do you think? Is it feasible?"
Wu Hao nodded and said: "There is no problem from a technical point of view. But there are still many risks and uncertainties in the whole process. My request is that you must take these risks and uncertainties into account and propose corresponding responses."
plan.
Everything must be planned and then acted upon, and success will be achieved if it is acted upon, do you understand?”
