NOVEL SIMPLE Xueba starts with change
Chapter 124 Team Training
Chapter 124 Team Training
Manandun glanced at the remaining three groups of nine people, and said, "Dean Yang has introduced me to you just now, and you all already know me. But I haven't met you yet, so I'll call the names first." , recognize the face. At least, I have to match the person with the name, right?"
He called Chen Zhou and others to the front row of the classroom, took the names of the three teams and called them.
During the roll call, Mananton would ask a few more questions, which department and how old are you?
After the roll call was over, Manandun returned to the podium, turned on the computer, connected it to the projector, and the PPT appeared on the screen: "Then let's start, let's look at the sample questions first, and then proceed to the formal training."
Chen Zhou glanced at it, and it was a bit similar to the previous competition question, but this one was more difficult.
[Protection of manned spacecraft on Mars. 】
Pointing to the sample question on the PPT, Manandon said: "This contest question originates from a specific engineering issue related to astronomy and space science, and is closely related to the development of the national economy, space development, and military science and technology. This question mainly It is used to solve the harm of high-temperature particles and cosmic radiation in space to the human body. Yes, this is a problem of manned spaceflight.”
As Manandon said, this one needs to consider people, while the previous question needs to consider things.
After a pause, Mananton cut to the next slide, which was a schematic diagram of the flight of the Mars rover.
Pointing to this picture, Manandon asked: "So, can any student tell me what radiation environment needs to be considered during the entire exploration flight of the Mars manned spacecraft?"
Chen Zhou took a look at the flight diagram, roughly starting from low-earth orbit, leaving the earth's orbit, flying to Mars, entering Mars orbit, landing and other processes, all marked.
And Manantun's problem is that it is necessary to consider the change of the radiation environment when the orbits between the earth and the fire change.
Thinking of this, Chen Zhou looked around and saw no one answered, so he got up and answered: "Professor Ma, during the flight of a manned spacecraft on Mars, the radiation environment mainly includes galactic cosmic rays, solar cosmic rays, solar wind and coronal matter." Composition of projectiles, etc.”
"But the analysis of the specific radiation environment needs to distinguish the different stages of the spacecraft. From this flight diagram, we can see that the entire exploration flight can be simply divided into the en route to Mars, the orbital position around Mars, The surface of Mars, the orbital position around Mars, and the way back to Earth, these stages."
"It is enough to analyze the specific situation of each stage. However, two points need to be emphasized. One is that the spacecraft needs to additionally consider the magnetic field on the surface of Mars."
Fang Jieming turned his head to look at Chen Zhou, and was a little surprised at Chen Zhou's eloquent talk.
Not only Fang Jieming, everyone's eyes were on Chen Zhou at the moment.
Isn't this student from the mathematics department?
After waving his hand, Manandun signaled Chen Zhou to sit down, and praised: "The consideration is very comprehensive, and the answer is specific enough, very good!"
He cut to the next slide, and the content on it was almost exactly the same as Chen Zhou's answer just now.
Pointing to several situations on the slide, Manandun emphasized: "As Chen Zhou said just now, specific situations need specific analysis. This is what I want to remind you. Intention, consider it comprehensively, and then proceed to the next step.”
As Manandun said, the PPT cut to the next slide.
It is about the analysis of radiation shielding during various stages of detection flight.
This part is actually a combination of theoretical analysis and theoretical calculation.
Different shielding materials have different shielding properties under different densities and conditions.
As far as this example question is concerned, what needs to be considered is which shielding materials should be used in each radiation environment to ensure the safety of the spacecraft and the safety of the astronauts.
Looking at these contents, Fang Jieming frowned slightly. He didn't understand this knowledge at all.
Even if he was asked to spend time searching for literature, he was still a little lost.
In this case, if he is responsible for theoretical calculations, it will definitely delay time.
Thinking of this, Fang Jieming glanced at Chen Zhou again.
After Manandun explained the sample questions, he came up with a corresponding question as a training question for Chen Zhou and his three groups.
The title is 【Aerobraking of Space Probes on Neptune】.
Also an aerospace issue.
The background of the topic is 【In order to enter a circular orbit around another planet, the spacecraft must change its orbit when it arrives, otherwise it will fly by the planet.If the spacecraft's orbit will be through a planet's atmosphere, the resulting drag can drastically reduce the amount of fuel needed.Assuming that a 2500 kg spacecraft reaches Neptune at a speed of 30 km/s, how much error is allowed when designing the orbit through the outer atmosphere of Neptune, and how much fuel can be saved by using the Neptune atmosphere for braking. 】
Neptune's atmosphere?
Using atmospheric air braking?
Conversion of fuel consumption?
etc.
The preliminary preparation for this question requires a lot of literature review.
But fortunately, the topic itself is not difficult.
The three of Chen Zhou turned on the computer, and while waiting for the computer to turn on, the three communicated briefly again.
Basically according to the results of the last assignment, Yang Yiyi was responsible for the theoretical analysis, Chen Zhou and Fang Jieming performed theoretical calculations at the same time, and Fang Jieming programmed and built the model. Afterwards, Yang Yiyi perfected the theory, went through the calculation and model again, and finally edited by Chen Zhou paper.
After confirming their division of labor, the three of them searched for literature first, and figured out Neptune and the spacecraft first.
After that, it was Yang Yiyi who made a reasonable analysis based on the actual situation of the topic, combined with physical principles, and put forward a hypothesis.
The reason why this question itself is not difficult is also the reason. The physical principles used in the question are very simple, and it can also be combined with similar scenarios on the earth.It is also easier to make reasonable assumptions this way.
During this process, Chen Zhou and Yang Yiyi were constantly discussing to ensure that the hypothetical plan was more reasonable.
Fang Jieming next to him was silently looking up documents, looking at programming, but couldn't get in a word.
After the scheme is assumed, it is theoretical calculation.
Yang Yiyi packed a document and sent it to Chen Zhou and Fang Jieming.
After Chen Zhou decompressed the files, he took out a draft paper and a pen and started to calculate.
From time to time, I will communicate with Yang Yiyi to confirm the accuracy.
Fang Jieming had the problem he was worried about before, because he was not familiar with physics knowledge, and the calculation was extremely time-consuming.
He was embarrassed to ask Yang Yiyi, after all, when Chen Zhou was calculating, he always discussed the rationality with Yang Yiyi.
If he asked about these basic calculations, it would be a shame...
Most importantly, seeing how Chen Zhou and the two were talking and laughing, Fang Jieming couldn't ask
(End of this chapter)
Manandun glanced at the remaining three groups of nine people, and said, "Dean Yang has introduced me to you just now, and you all already know me. But I haven't met you yet, so I'll call the names first." , recognize the face. At least, I have to match the person with the name, right?"
He called Chen Zhou and others to the front row of the classroom, took the names of the three teams and called them.
During the roll call, Mananton would ask a few more questions, which department and how old are you?
After the roll call was over, Manandun returned to the podium, turned on the computer, connected it to the projector, and the PPT appeared on the screen: "Then let's start, let's look at the sample questions first, and then proceed to the formal training."
Chen Zhou glanced at it, and it was a bit similar to the previous competition question, but this one was more difficult.
[Protection of manned spacecraft on Mars. 】
Pointing to the sample question on the PPT, Manandon said: "This contest question originates from a specific engineering issue related to astronomy and space science, and is closely related to the development of the national economy, space development, and military science and technology. This question mainly It is used to solve the harm of high-temperature particles and cosmic radiation in space to the human body. Yes, this is a problem of manned spaceflight.”
As Manandon said, this one needs to consider people, while the previous question needs to consider things.
After a pause, Mananton cut to the next slide, which was a schematic diagram of the flight of the Mars rover.
Pointing to this picture, Manandon asked: "So, can any student tell me what radiation environment needs to be considered during the entire exploration flight of the Mars manned spacecraft?"
Chen Zhou took a look at the flight diagram, roughly starting from low-earth orbit, leaving the earth's orbit, flying to Mars, entering Mars orbit, landing and other processes, all marked.
And Manantun's problem is that it is necessary to consider the change of the radiation environment when the orbits between the earth and the fire change.
Thinking of this, Chen Zhou looked around and saw no one answered, so he got up and answered: "Professor Ma, during the flight of a manned spacecraft on Mars, the radiation environment mainly includes galactic cosmic rays, solar cosmic rays, solar wind and coronal matter." Composition of projectiles, etc.”
"But the analysis of the specific radiation environment needs to distinguish the different stages of the spacecraft. From this flight diagram, we can see that the entire exploration flight can be simply divided into the en route to Mars, the orbital position around Mars, The surface of Mars, the orbital position around Mars, and the way back to Earth, these stages."
"It is enough to analyze the specific situation of each stage. However, two points need to be emphasized. One is that the spacecraft needs to additionally consider the magnetic field on the surface of Mars."
Fang Jieming turned his head to look at Chen Zhou, and was a little surprised at Chen Zhou's eloquent talk.
Not only Fang Jieming, everyone's eyes were on Chen Zhou at the moment.
Isn't this student from the mathematics department?
After waving his hand, Manandun signaled Chen Zhou to sit down, and praised: "The consideration is very comprehensive, and the answer is specific enough, very good!"
He cut to the next slide, and the content on it was almost exactly the same as Chen Zhou's answer just now.
Pointing to several situations on the slide, Manandun emphasized: "As Chen Zhou said just now, specific situations need specific analysis. This is what I want to remind you. Intention, consider it comprehensively, and then proceed to the next step.”
As Manandun said, the PPT cut to the next slide.
It is about the analysis of radiation shielding during various stages of detection flight.
This part is actually a combination of theoretical analysis and theoretical calculation.
Different shielding materials have different shielding properties under different densities and conditions.
As far as this example question is concerned, what needs to be considered is which shielding materials should be used in each radiation environment to ensure the safety of the spacecraft and the safety of the astronauts.
Looking at these contents, Fang Jieming frowned slightly. He didn't understand this knowledge at all.
Even if he was asked to spend time searching for literature, he was still a little lost.
In this case, if he is responsible for theoretical calculations, it will definitely delay time.
Thinking of this, Fang Jieming glanced at Chen Zhou again.
After Manandun explained the sample questions, he came up with a corresponding question as a training question for Chen Zhou and his three groups.
The title is 【Aerobraking of Space Probes on Neptune】.
Also an aerospace issue.
The background of the topic is 【In order to enter a circular orbit around another planet, the spacecraft must change its orbit when it arrives, otherwise it will fly by the planet.If the spacecraft's orbit will be through a planet's atmosphere, the resulting drag can drastically reduce the amount of fuel needed.Assuming that a 2500 kg spacecraft reaches Neptune at a speed of 30 km/s, how much error is allowed when designing the orbit through the outer atmosphere of Neptune, and how much fuel can be saved by using the Neptune atmosphere for braking. 】
Neptune's atmosphere?
Using atmospheric air braking?
Conversion of fuel consumption?
etc.
The preliminary preparation for this question requires a lot of literature review.
But fortunately, the topic itself is not difficult.
The three of Chen Zhou turned on the computer, and while waiting for the computer to turn on, the three communicated briefly again.
Basically according to the results of the last assignment, Yang Yiyi was responsible for the theoretical analysis, Chen Zhou and Fang Jieming performed theoretical calculations at the same time, and Fang Jieming programmed and built the model. Afterwards, Yang Yiyi perfected the theory, went through the calculation and model again, and finally edited by Chen Zhou paper.
After confirming their division of labor, the three of them searched for literature first, and figured out Neptune and the spacecraft first.
After that, it was Yang Yiyi who made a reasonable analysis based on the actual situation of the topic, combined with physical principles, and put forward a hypothesis.
The reason why this question itself is not difficult is also the reason. The physical principles used in the question are very simple, and it can also be combined with similar scenarios on the earth.It is also easier to make reasonable assumptions this way.
During this process, Chen Zhou and Yang Yiyi were constantly discussing to ensure that the hypothetical plan was more reasonable.
Fang Jieming next to him was silently looking up documents, looking at programming, but couldn't get in a word.
After the scheme is assumed, it is theoretical calculation.
Yang Yiyi packed a document and sent it to Chen Zhou and Fang Jieming.
After Chen Zhou decompressed the files, he took out a draft paper and a pen and started to calculate.
From time to time, I will communicate with Yang Yiyi to confirm the accuracy.
Fang Jieming had the problem he was worried about before, because he was not familiar with physics knowledge, and the calculation was extremely time-consuming.
He was embarrassed to ask Yang Yiyi, after all, when Chen Zhou was calculating, he always discussed the rationality with Yang Yiyi.
If he asked about these basic calculations, it would be a shame...
Most importantly, seeing how Chen Zhou and the two were talking and laughing, Fang Jieming couldn't ask
(End of this chapter)
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