At the space base, Academician Chang Huaxiang pinched the documents in his hand, took a deep breath and suppressed the shock and complicated emotions in his heart.

As he flipped through the proof paper on the supersonic orbiting puzzle in his hand, he asked, "I don't doubt your research, it's just"

After a slight pause, he looked up at Xu Chuan and continued: "It's just, how can this mathematical proof be applied to our space shuttle?" ”

Despite the supersonic turbulence problem, there has not been much progress in the mathematical community. But the proof paper in front of him was given to him, Chang Huaxiang did not doubt it.

After all, this person's personality is notoriously calm in academia, or at least in mathematics.

But almost all of his published papers have been proven to be correct.

However, reality does not stop at theoretical proofs.

In most cases, it is no less difficult to apply a theoretical proof to technology and solve practical problems and difficulties than theoretical proof.

Especially in the two fields of mathematics and physics, it is a top priority.

Mathematically, four of the seven millennial puzzles have been killed. From the Poincaré conjecture to the Yang-Mills existential and mass gap problem, behind each millennial problem is a variety of different fields of science and technology.

The Navier-Stokes (NS) equation, for example, corresponds to the development of fluid mechanics.

As an extremely widely used discipline, fluid mechanics can be said to involve all aspects of human biology.

From an electric motorcycle, to a space shuttle, to even homes and high-rise buildings, environmental protection and other fields, there are applications of fluid mechanics.

However, it has been more than two years since the NS equation was proven, and fluid mechanics has still not ushered in a leap forward.

The reason is simple: it is too difficult for theoretical mathematics in cutting-edge fields to be transformed into practical science and technology.

Not to mention the rest, after two years, there are probably not many experts and scholars in the field of applied fluid mechanics who can fully understand the proof paper, let alone apply it.

This is still the NS equation that is relatively close to the actual technology, and if it is physics, it is even less to say.

I am afraid that those top-notch theoretical physics achievements may not be able to be applied in two or three centuries.

Of course, this doesn't mean that theories aren't important.

Just like the NS equation, its proof will bring an open road to fluid mechanics, but people are still climbing this road.

Therefore, Chang Huaxiang still maintains a skeptical attitude towards how to transform this theoretical paper on the problem of supersonic orbit into real technology.

Hearing this question, Xu Chuan smiled and said, "If I can't do it, I won't come to you today." ”

After a pause, he continued: "Under the proof paper in your hand, there is the idea I have sorted out, you can take a look at it first, maybe it is better to understand." ”

Hearing this, Chang Huaxiang quickly reached out and opened the stack of documents, and glanced at the contents of the documents twice, with a somewhat moved expression on his face.

"It's . Shock cone + plasma torch.? ”

Xu Chuan nodded and said, "That's right, this is the method derived from the supersonic turbulence theory and the shock cone theory, the plasma torch active excitation technology." ”

"In Henry Allen's work, the head of the shuttle should be blunt rather than sharp, so that a wide and strong shock wave can be created in the head, which can be used to reduce the thermal barrier of the shuttle during re-entry."

"According to calculations, the aerodynamic deceleration rate and specific shape of the blunt-tipped cone are not, and the aerodynamic heating rate and heat load are comparable to those of the sharp cone. The difference is that the boundary layer of the sharp vertebral body is very thin, and it cannot form a spacious and strong protective shock wave like a blunt vertebra, so it cannot play a role in heat insulation. ”

"But in the plasma state, this effect can be exploited."

"When a space shuttle or spacecraft returns to the atmosphere and re-enters the atmosphere, the outer edge of its shock cone is as high as five or six thousand degrees Celsius, and at this temperature, the air it comes into contact with is already plasmaized."

"Using this characteristic and the super-velocity turbulence theory, the conebody is extended at the head of the space shuttle, and by releasing the plasma in advance, a high-temperature shock cone can be formed in advance at a farther position at the bow head, so that the shuttle is relatively far away from the high temperature and in a relatively 'shady' wake area."

Listening to Xu Chuan's words, Chang Huaxiang couldn't help but be a little moved, he couldn't help but swallow his saliva, and quickly added: "In this way, the thermal barrier problem during its re-entry process can greatly alleviate the pressure on the thermal insulation tile on the surface of the space shuttle." ”

Xu Chuan nodded with a smile and said, "That's right, use the plasma torch to push the shock cone at the bow of the space shuttle forward as much as possible, and you can adjust the range of the shock cone by controlling the range of the plasma torch release, which can better protect the space shuttle itself." ”

After thinking about it seriously, Academician Chang Huaxiang nodded and said: "The brilliant idea, if it can be done, may not only be applicable to the space shuttle. ”

After thinking for a moment, he continued: "It's just, what can be done to form such a plasma torch in the bow of the space shuttle?" ”

According to this idea, the early ignition of the shock cone by the plasma torch could theoretically greatly reduce the surface temperature of the space shuttle during high-speed flight.

Moreover, by igniting the diffusion shock cone in advance, the bow of the spacecraft or vehicle can be further designed to be sharpened, rather than being blunt.

As a result, the air resistance experienced by the aircraft while navigating the atmosphere is greatly reduced.

The air resistance is reduced, and the same thrust can naturally make the aircraft fly faster.

Theoretically, this optimization scheme can be applied not only to the space shuttle to solve the thermal barrier problem during re-entry, but also to the fighter jet to increase the speed of the fighter's flight.

However, it is quite difficult to form a sufficiently powerful plasma torch, ignite the shock cone in advance, and control the size of the range.

The current plasma excitation technology generally studies the properties of matter by applying energy to the substance to make it plasma, and by stimulating the energy level transition of atoms or molecules in the plasma.

Its common methods generally include electron beam excitation, laser excitation and plasma beam excitation.

But the problem is that the plasma excited by these means is basically used for scientific research, and the strength of the shock cone formed in the bow of the space shuttle is definitely not enough.

Hearing this question, Xu Chuan smiled and said, "It's not difficult. ”

"Huh?"

Hearing the voice, Academician Chang Huaxiang came back to his senses from his thoughts, looked at Xu Chuan with a surprised expression, and asked, "What do you say?" ”

Xu Chuan said with a smile: "You have entered the misunderstanding, it does not require too much additional technology to excite the plasma in the bow of the space shuttle. ”

"The aerospace engine itself is the most powerful plasma manufacturing equipment, and we only need to improve the ionization acceleration field to a certain extent, and it is enough to direct a part of the plasma to the bow of the space shuttle and then excite it."

Listening to Xu Chuan's statement, Chang Huaxiang suddenly understood, and said with a smile: "It turns out that you have already thought about it." ”

"Theoretically, this approach should be possible, but whether directing the plasma of the space engine to create a shock cone will have an impact on the thrust of the space shuttle."

After a slight pause, he continued: "I will communicate with Weng Yunzong, and I will also organize personnel to conduct feasibility studies and designs." However, it will probably be too late to complete this work before the moon landing. ”

Xu Chuan said with a smile: "This is fine, this design can be used as a follow-up optimization plan for the space shuttle, and whether the manned landing on the moon can be used is not so urgent." ”

Chang Huaxiang nodded and said seriously: "Well, don't worry, I will do my best to design and manufacture it." ”

Xu Chuan nodded and said, "Then the related work will trouble you." ”

Chang Huaxiang waved his hand and said with a smile: "What kind of trouble is this, you have already solved the real trouble, and the rest of the work can be replaced by any person." ”

Xu Chuan smiled, and just wanted to say something, he remembered another thing, and as soon as his voice changed, he asked: "By the way, Academician Chang, how about the first flight related to manned spaceflight?" ”

Although the study of the supersonic turbulence problem was quite successful, it was not a work that was completed in a day.

In fact, it took him a whole week to solve the puzzle.

During this period, the space activities on the space base have been going on, and he missed the first manned space flight of Xinghai.

Hearing this question, Chang Huaxiang said with a smile: "The space base has successfully carried out the last unmanned flight and the first manned space activity, everything is quite smooth, and the manned lunar landing project will be launched as planned." ”

As the technical director of the aerospace engineering of the Xinghai Research Institute, he is naturally familiar with each voyage and the overall situation related to it.

The success of Xinghai is not only his glory, but also the glory of Huaguo, and it is also a new pinnacle in the field of aerospace!

Xinghai has taken on the burden of new development in the new era of China's aerospace field!

In the office, the two chatted for a while, and before Xu Chuan left, Chang Huaxiang suddenly remembered something and called out to Xu Chuan: "By the way, Academician Xu, I reported to you some time ago, about the specific date for the manned lunar landing project, have you determined the date here?" ”

All the aerospace planning of the Xinghai Research Institute and the Xinghai was actually done by him. However, when it comes to the arrangement of the first manned landing on the moon, he will not deal with it in a hurry.

After all, nominally, Xu Chuan is the person in charge of the manned spaceflight and lunar exploration project of the Xinghai Research Institute. He didn't speak, who would dare to finalize the time and send it to the entire research institute and space base?

Hearing this, Xu Chuan immediately patted his head and said in annoyance: "I forgot about this matter." ”

Hearing this, Chang Huaxiang was stunned for a moment, and looked at Xu Chuan in a daze, a little unexpectedly this answer.

Regarding the planning of the manned lunar landing project, after the successful maiden voyage of the Xinghai, the Xinghai Research Institute has already been determined by the Space Agency in June.

The reason for determining an approximate time in advance is that this manned lunar landing is the first time in China, and the Xinghai Research Institute needs to discuss and formulate specific launch plans with other participants in the lunar landing project, and coordinate the preparation of specific launch work.

However, the approximate time has been determined, but the specific date has not yet been determined.

After all, the specific situation can only be known and determined after the completion of manned space flight in low-earth orbit.

About a week ago, while Xu Chuan was studying the problem of supersonic turbulence, Xinghai's first manned space flight was completed. After the follow-up inspection work, after confirming that everything was going well, the date planning of the manned lunar landing project was also put on the journey, and the relevant work report was also passed on to Xu Chuan.

Although I waited for a week and didn't wait for Xu Chuan's reply, everyone didn't care.

After all, for such an important thing as a manned landing on the moon, it is normal to think more about it.

However, what Chang Huaxiang didn't expect was that he actually put such an important thing. Forgot???

Taking a deep breath, he opened his mouth and reminded: "The manned lunar landing project has communicated with the space agency and the above a long time ago, and according to the analysis of the progress and situation at that time, the moon landing time was initially selected in June, and the specific time will be determined after the completion of the Xinghai low-earth orbit manned spaceflight." ”

"And I reported it to you last week."

After a pause, he looked up at Xu Chuan, sighed lightly and said, "If it hasn't been finalized yet?" Why don't we have a small meeting now? ”

At the beginning, he thought that Xu Chuan came here to discuss the date of the manned moon landing, but he didn't expect to come up with a supersonic turbulence theory later, so much so that he almost forgot about it.

Fortunately, there is still time, and it is still too late to discuss and determine. If it drags on until June, it will be a real cheat.

Of course, the reason why no one urged Xu Chuan has little to do with the performance of the space shuttle Xinghai and the requirements of the space window for the moon landing.

Unlike the fire, the fireride has strict window requirements, but the window limit for the moon landing is not as severe as the fire.

Especially when Xinghai has more ability to autonomously correct its orbit, this window limit has been infinitely narrowed.

The ability of the electric propulsion system, even when the distance between the Earth and the Moon is the farthest, will not affect the moon landing of Xinghai.

If it was the traditional manned spaceflight mode, the space bureau and the space base would have been in a hurry to go to the sky a long time ago, where could Xu Chuan study his own things with peace of mind.

So everyone has been waiting for Xu Chuan's reply.

What people didn't expect was such an important thing. This one was directly forgotten.

This kind of outrageous thing, I'm afraid not many people will believe it.

After all, this is China's first manned lunar landing project, and the people of the whole country are waiting!!

In this kind of matter, Chang Huaxiang can only comfort himself with the academic problem of 'Sichuan God's research on supersonic turbulence, and has no time to pay attention to the work of mortals.